Data Sheet 1 Rev. 1.22
www.infineon.com/transceivers 2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
1 Overview
Features
• HS CAN Transceiver with data transmission rate up to 1 MBaud
• Compliant to ISO 11898-5
• Very low power consumption in Sleep mode
• Bus Wake-Up and local Wake-Up
• Inhibit output to control external circuitry
• Separate VIO input to adapt different micro controller supply voltages
• Separate output for failure diagnosis
• Optimized for low electromagnetic emission (EME)
• Optimized for a high immunity against electromagnetic interference (EMI)
• Very high ESD robustness, ±9 kV according to IEC 61000-4-2
• Protected against automotive transients
• Receive-Only mode for node failure analysis
• TxD time-out function and RxD recessive clamping with failure indication
• TxD to RxD short circuit recognition with failure indication
• CANH and CANL short circuit recognition with failure indication
• Bus dominant clamping diagnosis
• Under-voltage detection at VCC, VIO and VS
• Power-Up and Wake-Up source recognition
• Short circuit proof and Over-Temperature protection
• Green Product (RoHS compliant)
Potential applications
• Mixed power supply HS-CAN networks
Product validation
Qualified for automotive applications. Product validation according to AEC-Q100.
Data Sheet 2 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Overview
Description
As a successor of the TLE6251G, the TLE6251-3G is designed to provide an excellent passive behavior in Power
Down. This feature makes the TLE6251-3G extremely suitable for mixed power supply HS-CAN networks. The
TLE6251-3G provides different operation modes with a very low quiescent current in Sleep mode. Based on
the high symmetry of the CANH and CANL signals, the TLE6251-3G provides a very low level of electromagnetic
emission (EME) within a broad frequency range. The TLE6251-3G is integrated in a RoHS compliant PG-DSO-14
package and fulfills or exceeds the requirements of the ISO11898-5. The TLE6251G and the TLE6251-3G are
fully pin compatible and function compatible.
Type Package Marking
TLE6251-3G PG-DSO-14 TLE6251-3G
Data Sheet 3 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 High Speed CAN Physical Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 Normal Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Receive-Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 Stand-By Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.4 Go-To-Sleep Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.5 Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Wake-Up Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1 Remote Wake-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.2 Local Wake-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.3 Mode Change via the EN and NSTB pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Fail Safe Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.1 CAN Bus Failure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.2 Local Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2.1 TxD Time-Out Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2.2 TxD to RxD Short Circuit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2.3 RxD Permanent Recessive Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2.4 Bus Dominant Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.2.5 Over-Temperature Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.3 Under-Voltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.3.1 Under-Voltage Event on VCC and VIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.3.2 Under-Voltage Event on VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.4 Voltage Adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8 Diagnosis-Flags at NERR and RxD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9 General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.2 Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.3 Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.1 Functional Device Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.2 Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11 Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11.1 Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11.2 ESD Robustness according to IEC61000-4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.3 Voltage Drop over the INH Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.4 Mode Change to Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.5 Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table of Contents
Data Sheet 4 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
12 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
13 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Data Sheet 5 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Block Diagram
2 Block Diagram
Figure 1 Block Diagram
RxD
Driver
Temp.-
Protection
TxD
1
NSTB
EN
NERR
8
V
IO
7INH
Wake-Up
Comparator
13
CANH
12
WK
3
V
CC
10
V
S
11
N.C.
2
GND
Normal
Receiver
9
Mode Control
Logic
+
timeout
Diagnosis &
Failure
Logic
Wake-Up
Detection
RxD Output
Control
Output
Stage
CANL
Low Power
Receiver
V
CC
/2
V
S
V
IO
V
IO
4
5
14
6
Data Sheet 6 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Pin Configuration
3 Pin Configuration
3.1 Pin Assignment
Figure 2 Pin Configuration
3.2 Pin Definitions and Functions
Table 1 Pin Definitions and Functions
Pin Symbol Function
1TxD Transmit Data Input;
integrated pull-up resistor to VIO, “low” for dominant state.
2GND Ground
3VCC Transceiver Supply Voltage;
100 nF decoupling capacitor to GND recommend.
4RxD Receive Data Output;
“Low” in dominant state.
Output voltage level dependent on the VIO supply
5VIO Logic Supply Voltage;
Digital Supply Voltage for the logic pins TxD, RxD, EN, NERR and NSTB;
Usually connected to the supply voltage of the external microcontroller;
100 nF decoupling capacitor to GND recommend.
6EN Mode Control Input;
Integrated pull-down resistor;
“High” for Normal Operation mode.
TxD 1
2
3
4
5
6
78
GND
VCC
RxD
NSTB
CANH
CANL
N.C.
VIO
EN
INH
VS
WK
NERR
9
10
11
12
13
14
Data Sheet 7 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Pin Configuration
7INH Inhibit Output;
Open drain output to control external circuitry;
High impedance in Sleep mode
8NERRError Flag Output;
Failure and Wake-Up indication output, active “low”
Output voltage level depends on the VIO supply
9WK Wake-Up Input;
Local Wake-Up input;
Wake-Up input sensitive to a level change in both directions, “high” to “low” and vice versa.
10 VSBattery Voltage Supply;
100 nF decoupling capacitor to GND recommend.
11 N.C. Not Connected;
12 CANL CAN Bus “Low” Level I/O;
“Low” in dominant state
13 CANH CAN Bus “High” Level I/O;
“High” in dominant state
14 NSTB Stand-By Control input;
Integrated pull-down resistor;
“High” for Normal Operation mode.
Table 1 Pin Definitions and Functions (cont’d)
Pin Symbol Function
Data Sheet 8 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Functional Description
4 Functional Description
CAN is a serial bus system that connects microcontrollers, sensor and actuators for real-time control
applications. The usage of the Control Area Network (abbreviated CAN) within road vehicles is described by
the international standard ISO 11898. According to the 7 layer OSI reference model the physical layer of a CAN
bus system specifies the data transmission from one CAN node to all other available CAN nodes inside the
network. The physical layer specification of a CAN bus system includes all electrical and mechanical
specifications of a CAN network. The CAN transceiver is part of the physical layer specification. Several
different physical layer standards of CAN networks have been developed over the last years. The TLE6251-3G
is a High Speed CAN transceiver with dedicated Wake-Up functions. High Speed CAN Transceivers with Wake-
Up functions are defined by the international standard ISO 11898-5.
4.1 High Speed CAN Physical Layer
Figure 3 High Speed CAN Bus Signals and Logic Signals
VCC
CAN_H
CAN_L
TxD
VIO = Logic Supply
VCC = Transceiver Supply
TxD = Input from the
Microcontroller
RxD = Output to the
Microcontroller
CANH = Voltage on CANH
Input/Output
CANL = Voltage on CANL
Input/Output
VDIFF = Differential Voltage
VDIFF = VCANH – VCANL
RxD
VDIFF
Dominant
Recessive
VIO
VIO
t
t
t
t
VDIFF = ISO Level Dominant
VDIFF = ISO Level Recessive
Data Sheet 9 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Functional Description
The TLE6251-3G is a High Speed CAN transceiver, operating as an interface between the CAN controller and
the physical bus medium. A High Speed CAN network (abbreviated HS CAN) is a two wire differential network
which allows data transmission rates up to 1 MBaud. Characteristic for a HS CAN network are the two CAN bus
states dominant and recessive (see Figure 3).
A HS CAN network is a Carrier Sense Multiple Access network with Collision Detection. This means, every
participant of the CAN network is allowed to place its message on the same bus media simultaneously. This
can cause data collisions on the bus, which might corrupt the information content of the data stream. In order
avoid the loss of any information and to prioritize the messages, it is essential that the dominant bus signal
overrules the recessive bus signal.
The input TxD and the output RxD are connected to the microcontroller of the ECU. As shown in Figure 1, the
HS CAN transceiver TLE6251-3G has a receive unit and a output stage, allowing the transceiver to send data to
the bus medium and monitor the data from the bus medium at the same time. The HS CAN TLE6251-3G
converts the serial data stream available on the transmit data input TxD into a differential output signal on
CANbus. The differential output signal is provided by the pins CANH and CANL. The receiver stage of the
TLE6251-3G monitors the data on the CAN bus and converts them to a serial data stream on the RxD pin. A
“low” signal on the TxD pin creates a dominant signal on the CAN bus, followed by a “low” signal on the RxD
pin (see Figure 3). The feature, broadcasting data to the CAN bus and listening to the data traffic on the
CAN bus simultaneous is essential to support the bit to bit arbitration on CAN networks.
The voltage levels for a HS CAN on the bus medium are defined by the ISO 11898-2/-5 standards. Whether a
data bit is dominant or recessive, depends on the voltage difference between CANH and CANL:
VDIFF =VCANH -VCANL
To transmit a dominant signal to the CAN bus the differential signal VDIFF is larger or equal to 1.5 V. To receive
a “Recessive” signal from the CAN bus the differential signal VDIFF is smaller or equal to 0.5 V.
The voltage level on the digital input TxD and the digital output RxD is determined by the power supply level
at the pin VIO. Depending on voltage level at the VIO pin, the signal levels on the logic pins (EN, NERR, NSTB, TxD
and RxD) are compatible to microcontrollers with 5 V or 3.3 V I/O supply. Usually the VIO power supply of the
transceiver is connected to same power supply as I/O power supply of the microcontroller.
Partially supplied CAN networks are networks where the participants have a different power supply status.
Some nodes are powered up, other nodes are not powered, or some other nodes are in a Low-Power mode,
like Sleep mode for example. Regardless on the supply status of the HS CAN node, each participant which is
connected to the common bus, shall not disturb the communication on the bus media. The TLE6251-3G is
designed to support partially supplied networks. In Power Down condition, the resistors of the Normal
Receiver are switched off and the bus input on the pins CANH and CANL is high resistive.
Data Sheet 10 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
5 Operation Modes
Five different operation modes are available on TLE6251-3G. Each mode with specific characteristics in terms
of quiescent current, data transmission or failure diagnostic. For the mode selection the digital input pins EN
and NSTB are used. Both digital input pins are event triggered. Figure 4 illustrates the different mode changes
depending on the status of the EN and NSTB pins. A mode change via the mode selections pins EN and NSTB
is only possible when the power supplies VCC, VIO and VS are active.
Figure 4 Operation Modes
Under-voltage
on VS
VS < VS,Poff
EN NSTB INH
Normal Operation
mode
On11
EN NSTB INH
Stand-By
mode
On00
EN NSTB INH
Receive Only
mode
On10
EN NSTB INH
Sleep mode
Off00
Go-To-Sleep
command
EN NSTB INH
01On
Power Down
Under-voltage
on VCC
Start – Up
Supply VS
Supply VCC within t < tUV(VCC)
Supply VIO within t < tUV(VIO)
Under-voltage
on VIO
EN -> 1
NSTB -> 1
EN -> 0
NSTB -> 0
EN = 1
NSTB -> 0
EN = 1
NSTB ->1
EN = 0
NSTB -> 0
EN = 0
NSTB -> 1
EN -> 0
NSTB = 1
EN -> 1
NSTB = 1
EN -> 1
NSTB -> 0
EN -> 0
NSTB -> 1
EN -> 1
NSTB = 0
EN -> 0
t < thSLP
NSTB = 0
EN -> 0
t > thSLP
NSTB = 0
thSLP
Timing important
for mode selection
EN = 0
NSTB -> 1
VCC & VIO ON
EN -> 1
NSTB -> 1
VCC & VIO ON
Wake-Up Event
Bus-Wake:
t > tBUSdom
Local-Wake:
t > tWake
VIO < VIO,UV
t > tUV(VIO)
VCC < VCC,UV
t > tUV(VCC)
VS > VS,Pon
Data Sheet 11 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
In Sleep mode the power supply VCC and the logic power supply VIO are usually turned off. A Wake-Up event,
via the CAN bus or the local Wake-Up pin, shifts the device from Sleep mode into Stand-By mode.
The following operations mode are available on the TLE6251-3G:
•Normal Operation mode
• Receive-Only mode
•Stand-By mode
•Sleep mode
• Go-To-Sleep Command
Depending on the operation mode, the output driver stage, the receiver stage and the bus biasing are active
or inactive. Table 2 shows the different operation modes depending on the logic signal on the pins EN and
NSTB with the related status of the INH pin and the bus biasing.
5.1 Normal Operation Mode
In Normal Operation mode the HS CAN transceiver TLE6251-3G sends the serial data stream on the TxD pin to
the CAN bus while at the same time the data available on the CAN bus is monitored on the RxD output pin. In
Normal Operation mode all functions of the TLE6251-3G are active:
• The output stage is active and drives data from the TxD to the CAN bus.
• The normal receiver unit is active and provides the data from the CAN bus to the RxD pin.
• The low power receiver and the bus Wake-Up function is inactive.
• The local Wake-Up pin is disabled.
• The INH pin is connected to VS.
• The RxD pin is “low” for a dominant bus signal and “high” for a recessive bus signal”
• The bus basing is set to VCC/2.
• The failure detection is active and failures are indicated at the NERR pin. (see Chapter 8).
• The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
The HS CAN transceiver TLE6251-3G enters Normal Operation mode by setting the mode selection pins EN and
NSTB to “high” (see Table 2 or Figure 4).
5.2 Receive-Only Mode
The Receive-Only mode can be used to test the connection of the bus medium. The TLE6251-3G can still
receive data from the bus, but the output stage is disabled and therefore no data can be sent to the CAN bus.
All other functions are active:
• The output stage is disabled and data which is available on the TxD pin will be blocked and not
communicated to the CAN bus.
Table 2 Overview Operation Modes
Operation mode EN NSTB INH Bus Bias
Normal Operation 1 1 VSVCC/2
Receive-Only 0 1 VSVCC/2
Stand-By 0 0 VSGND
Go-To-Sleep 1 0 VSGND
Sleep00FloatingGND
Power Down 0 0 Floating Floating
Data Sheet 12 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
• The normal receiver unit is active and provides the data which is available on the CAN bus to the RxD pin.
• The INH pin is connected to VS.
• The RxD pin is “low” for a dominant bus signal and “high” for a recessive bus signal.
• The bus biasing is set to VCC/2.
• The low power receiver and the bus Wake-Up function is inactive.
• The local Wake-Up pin WK is disabled.
• The failure diagnostic is active and local failures are indicated at the NERR pin (see Chapter 8).
• The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
The HS CAN transceiver TLE6251-3G enters Receive-Only mode by setting the EN pin to “low” and the NSTB to
“high” (see Table 2 or Figure 4).
5.3 Stand-By Mode
After the power-up sequence the TLE6251-3G enters automatically into Stand-By mode. Stand-By mode is an
idle mode of the TLE6251-3G with optimized power consumption. In Stand-By mode the TLE6251-3G can not
send or receive any data. The output driver stage and the normal receiver unit are disabled. Both CAN bus pins,
CANH and CANL are connected to GND. The following functions are available in Stand-By mode:
• The output stage is disabled.
• The normal receiver unit is disabled.
• The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-3G sets an internal Wake-Up flag. If the power supplies VCC and VIO are active, the Wake-Up event
is indicated by the RxD pin and the NERR pin (see Chapter 8). After first power-up or after an undervoltage
event on VS a wake-up is not signaled on RxD and NERR pin.
• The local Wake-Up pin is active and a local Wake-Up event is indicated by the RxD and NERR pin, if the
power supplies VCC and VIO are active (see Chapter 8).
• The INH output is active and set to VS.
• Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
• If the power supplies VCC and VIO are active, the RxD pin indicates the Wake-Up events.
• The TxD pin is disabled
• The failure diagnostic is disabled.
• The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
• The TLE6251-3G detects a Power-Up event and indicates it at the NERR pin (see Chapter 8).
There are several ways to enter the Stand-By mode (see Figure 4):
• After the start-up sequence the device enters per default Stand-By mode. Mode changes are only possible
when VCC and VIO are present.
• The device is in Sleep mode and a Wake-Up event occurs.
• The device is in the Go-To-Sleep command and the EN pin goes “low” before the time t < thSLP has expired.
• The device is in Normal Operation mode or Receive-Only mode and the EN pin and NSTB pin are set to
“low”.
• An under-voltage event occurs on the power supply VS. In case of an under-voltage event, the TLE6251-3G
device always changes to Stand-By mode regardless in which mode the device currently operates.
Data Sheet 13 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
5.4 Go-To-Sleep Command
The Go-To-Sleep command is a transition mode allowing external circuitry like a microcontroller to prepare
the ECU for the Sleep mode. The TLE6251-3G stays in the Go-To-Sleep command for the maximum time
t=thSLP, after exceeding the time thSLP the device changes into Sleep mode. A mode change into Sleep mode is
only possible via the Go-To-Sleep command. During the Go-To-Sleep command the following functions on the
TLE6251-3G are available:
•The output driver stage is disabled.
• The normal receiver unit is disabled.
• The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-3G sets an internal Wake-Up flag.
• The local Wake-Up pin is active and can detect a local Wake-Up event.
• The INH output is active and set to VS.
• Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
• The TxD pin is disabled.
• The failure diagnostic is disabled.
• The under-voltage detection on all 3 power supplies VCC, VIO and VS is active.
Setting the NSTB pin to “low”, while the EN signal remains at “high”, activates the Go-To-Sleep command. The
Go-To-Sleep command can be entered from Normal Operation mode, Receive-Only mode and from Stand-By
mode.
5.5 Sleep Mode
The Sleep mode is a power save mode. In Sleep mode the current consumption of the TLE6251-3G is reduced
to a minimum while the device is still able to Wake-Up by a message on the CAN bus or a local Wake-Up event
on the pin WK. Most of the functions of the TLE6251-3G are disabled:
•The output driver stage is disabled.
• The normal receiver unit is disabled.
• The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-3G changes from Sleep mode to Stand-By mode and sets an internal Wake-Up flag.
• The local Wake-Up pin is active and in case of a signal change on the WK pin the operation mode changes to
Stand-By mode.
• The INH output is floating.
• Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
• If the power supplies VCC and VIO are present, the RxD pin indicates the Wake-Up event.
• The TxD pin is disabled
• The under-voltage detection on the power supply VS is active and sends the device into Stand-By mode in
case of an under-voltage event.
There are only two ways to enter Sleep mode:
• The device can activate the Sleep mode via the mode control pins EN and NSTB.
• An under-voltage event on the power supplies VCC and VIO changes the operation mode to Sleep mode.
In order to enter the Stand-By mode or the Sleep mode, the EN signal needs to be set to “low” a defined time
after the NSTB pin was set to “low”. Important for the mode selection is the timing between the falling edge
of the NSTB signal and the EN signal. If the logical signal on the EN pin goes “low” before the transition time t
< thSLP has been reached, the TLE6251-3G enters Stand-By mode and the INH pin remains connected to the VS
supply. In the case the logical signal on the EN pin goes “low” after the transition time t > thSLP, the TLE6251-
Data Sheet 14 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
3G enters into Sleep mode simultaneous with the expiration of the time window thSLP and the INH becomes
disconnected from the VS supply and is floating. (see Figure 5).
Figure 5 Entering Sleep Mode or Stand-By Mode
The signal on the CAN bus has no impact to mode changes. The operation mode can be changed regardless of
the CAN bus being in dominant state or in recessive state.
EN
NSTB
INH
t < thSLP
Go-To Sleep
command Stand-By mode
Normal Operation
mode
thSLP
EN
NSTB
INH
t > thSLP
Go-To Sleep
command Sleep mode
Normal Operation
mode
thSLP
t
t
t
t
t
t
Data Sheet 15 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Wake-Up Functions
6 Wake-Up Functions
There are several possibilities for a mode change from Sleep mode to another operation mode.
• Remote Wake-Up via a message on the CAN bus.
• Local Wake-Up via a signal change on the pin WK.
• A status change of the logical signals applied to the mode control pins EN and NSTB.
• An under-voltage detection on the VS power supply.
In typical applications the power supplies VCC and VIO are turned off in Sleep mode, meaning a mode change
can only be caused by an external event, also called Wake-Up. In case the VCC and VIO power supply are
available, a mode change can be simple caused by changing the status on the mode control pins EN and NSTB.
6.1 Remote Wake-Up
A remote Wake-Up or also called bus Wake-Up occurs via a CAN bus message and changes the operation mode
from Sleep mode to Stand-By mode. A signal change from recessive to dominant, followed by a dominant
signal for the time t > tWake initiates a bus Wake-Up (see Figure 6).
Figure 6 Remote Wake-Up
In case the time of the dominant signal on the CAN bus is shorter than the filtering time tWake, no bus Wake-Up
occurs. The filter time is implemented to protect the HS CAN transceiver TLE6251-3G against unintended bus
Wake-Up’s, triggered by spikes on the CAN bus. The signal change on the CAN bus from “Recessive” to
dominant is mandatory, a permanent dominant signal would not activate any bus Wake-Up.
In Stand-By mode the RxD output pin and the NERR output pin display the CAN bus Wake-Up event by a “low”
signal (Details see Chapter 8). Once the HS CAN Transceiver TLE6251-3G has recognized the Wake-Up event
and has changed to Stand-By mode, the INH output pin becomes active and provides the voltage VS to the
external circuitry.
CANH
CANL
INH
t > tWake
Go-To
Sleep
command
Stand-By mode
Normal
Operation
mode
t
t
Sleep mode
„Recessive“ to „Dominant“
change
t < tWake
No Wake-Up
Wake-Up
Data Sheet 16 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Wake-Up Functions
6.2 Local Wake-Up
The TLE6251-3G can be activated from Sleep mode by a signal change on the WK pin, also called local Wake-
Up. Designed to withstand voltages up to 40V the WK pin can be directly connected to VS. The internal logic on
the WK pin works bi-sensitive, meaning the Wake-Up logic on the pin WK triggers on a both signal changes,
from “high” to “low” and from “low” to “high” (see Figure 7).
Figure 7 Local Wake - Up
A filter time tWK(local) is implemented to protect the TLE6251-3G against unintended Wake-Up’s, caused by
spikes on the pin WK. The threshold values VWK,H and VWK,L depend on the level of the VS power supply.
In Stand-By mode the RxD output pin and the NERR output pin display the CAN bus Wake-Up event by a “low”
signal (Details see Chapter 8). Once the HS CAN Transceiver TLE6251-3G has recognized the Wake-Up event
and has changed to Stand-By mode, the INH output pin becomes active and provides the voltage VS to the
external circuitry.
VWK
INH
t > tWk(local)
Stand-By mode
t
t
Sleep mode
Wake-Up
t < tWk(local)
No Wake-Up
VWK
INH
t > tWk(local)
Stand-By Mode
t
t
Sleep Mode
Wake-Up
t < tWk(local)
No Wake-Up
Stand-By modeSleep mode
VWK,H
VWK,L
Data Sheet 17 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Wake-Up Functions
6.3 Mode Change via the EN and NSTB pin
Besides a mode change issued by a Wake-Up event, the operation mode on the TLE6251-3G can be changed
by changing the signals on the EN and NSTB pins. Therefore the power supplies VCC and VIO must be active.
According to the mode diagram in Figure 4 the operation mode can be changed directly from Sleep mode to
the Receive-Only mode, Normal Operation mode. A change from Sleep mode direct to Stand-By mode is only
possible via a Wake-Up event. For example by setting the NSTB pin and the EN pin to “high” the TLE6251-3G
changes from Sleep mode to Normal Operation mode (see Figure 8).
The pins EN and NSTB have a hysteresis between the “low” and the “high” signal in order to avoid any toggling
during the operation mode change.
Figure 8 Wake-Up via Mode Change
Data Sheet 18 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
7 Fail Safe Features
7.1 CAN Bus Failure Detection
The High Speed CAN Transceiver TLE6251-3G is equipped with a bus failure detection unit. In Normal
Operation mode the TLE6251-3G can detect the following bus failures:
• CANH shorted to GND
• CANL shorted to GND
• CANH shorted to VCC
• CANL shorted to VCC
• CANH shorted to VS
• CANL shorted to VS
The TLE6251-3G can not detect the bus failures:
•CANH open
•CANL open
• CANH short to CANL
The TLE6251-3G detects the bus failures while sending a dominant signal to the CAN bus. After sending four
dominant bits to the CAN bus, a “low” on the NERR pins indicates the CAN bus failure. For the failure indication
the dominant bits require a minimum pulse width of 4 µs. In case the TLE6251-3G detects an CAN bus failure,
the failure is only indicated by the NERR pin, the transceiver doesn’t stop or block the communication, by
disabling the output stage for example.
Figure 9 CAN Bus Failure CANH short to VCC
The communication on the CAN bus could still be possible even with a short CANH to VCC or CANH to VS.
Whether the CAN bus communication is possible or not, depends on parameters like the number of
TxD
t
t
CANH
CANL
Short to VCC
RxD
t
NERR
t
Four Dominant Bits
Data Sheet 19 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
participants inside the CAN network, the network termination, etc. This figure shows a working CAN bus
communication as an example and it shall not be considered as a liability that on HS CAN networks the CAN
bus communication continues in every CAN bus failure case.
7.2 Local Failures
If a local failure occurs during the operation of the TLE6251-3G, the device sets an internal local failure flag.
The local failure flag can be displayed to the microcontroller during the Receive-Only mode and the failures
are indicated by a “low” signal on the NERR pin. The following local failures can be detected:
•TxD time-out
•TxD to RxD Short
• RxD permanent Recessive Clamping
• Bus Dominant Clamping
•Over-Temperature Detection
7.2.1 TxD Time-Out Feature
The TxD time-out feature protects the CAN bus against permanent blocking in case the logical signal on the
TxD pin is continuously “low”.
In Normal Operation mode, a “low” signal on the TxD input pin for the time t > tTXD enables the TxD time-out
feature and the TLE6251-3G disables the output driver stage. In Receive-Only mode the TLE6251-3G indicates
the TxD time-out by a “low” signal on the NERR pin (see Figure 10). To release the output driver stage after the
permanent “low” signal on the TxD input pin disappears, a mode change from Receive-Only mode to Normal
Operation mode is required.
Data Sheet 20 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
Figure 10 TxD Time-Out Feature
7.2.2 TxD to RxD Short Circuit Feature
A short between the pins TxD and RxD causes permanent blocking of the CAN bus. In the case, that the low side
driver capability of the RxD output pin is stronger as the high side driver capability of the external
microcontroller output, which is connected to the TxD pin of the TLE6251-3G, the RxD output signal overrides
the TxD signal provided by the microcontroller. In this case a continuous dominant signal blocks the CAN bus.
The TLE6251-3G detects the short between the TxD and the RxD pin, disables the output driver stage and sets
the internal local failure flag. In Receive-Only mode the TLE6251-3G indicates the TxD to RxD short by a “low”
signal on the NERR pin. The TLE6251-3G releases the failure flag and the output driver stage by an operation
mode change from Receive-Only mode to Normal Operation mode.
7.2.3 RxD Permanent Recessive Clamping
A “high” signal on the RxD pin indicates the external microcontroller, that there is no CAN message on the
CAN bus. The microcontroller can transmit a message to the CAN bus only when the bus is recessive. In case
the “high” signal on the RxD pin is caused by a failure, like a short from RxD to VIO, the RxD signal doesn’t mirror
the signal on the CAN bus. This allows the microcontroller to place a message to the CAN bus at any time and
corrupts CAN bus messages on the bus. The TLE6251-3G detects a permanent “high” signal on the RxD pin and
set the local error flag. In order to avoid any data collisions on the CAN bus the output driver stage gets
disabled. In Receive-Only mode the TLE6251-3G indicates the RxD Clamping by a “low” signal on the NERR pin.
TxD
t
CANH
CANL
RxD
NSTB
t
TxD time-out
EN
NERR
Normal Operation mode Normal Operation
mode
Receive-Only
mode
TxD time–out
released
Output stage
released
t
t
t
t = tTXD
Data Sheet 21 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
The TLE6251-3G releases the failure flag and the output driver stage by an operation mode change or when
the RxD clamping failure disappears.
7.2.4 Bus Dominant Clamping
Due to a fail function on one of the CAN bus participants, the CAN bus could be permanent in dominant state.
The external microcontroller doesn’t transmit any data to the CAN bus as long as the CAN bus remains
dominant. Even if the permanent “Dominate” state on the CAN bus is caused by a short from CANH to VCC, or
similar, the transceiver can not detect the failure, because the CAN bus failure detection works only when the
transceiver is active sending data to the bus. Therefore the TLE6251-3G has a bus dominant clamping
detection unit installed. In case the bus signal is dominant for the time t > tBus,t the TLE6251-3G detects the bus
clamping and sets the local failure flag. The output driver stage remains active. In Receive-Only mode the
TLE6251-3G indicates the bus dominant clamping by a “low” signal on the NERR pin.
7.2.5 Over-Temperature Detection
The output driver stage is protected against over temperature. Exceeding the shutdown temperature results
in deactivation of the output driving stage. To avoid any toggling after the device cools down, the output
driver stage is enabled again only after a recessive to dominant signal change on the TxD pin (see Figure 11).
An Over-Temperature event only deactivates the output driver stage, the TLE6251-3G doesn’t change its
operation mode in this failure case. The Over - Temperature event is indicated by a “low” signal on the NERR
pin in Receive-Only mode.
Figure 11 Release of the Transmission after an Over-Temperature event
TxD
t
CANH
CANL
RxD
Normal Operation mode
t
t
t
Temp.
Output-Stage Release
Thermal Shutdown
Temp. T
JSD
Thermal Shutdown
Hysteresis ΔT
J
Cool Down
Data Sheet 22 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
7.3 Under-Voltage Detection
The TLE6251-3G provides a power supply monitoring on all three power supply pins: VCC, VIO and VS. In case of
an under - voltage event on any of this three power supplies, the TLE6251-3G changes the operation mode and
sets an internal failure flag. The internal failure flag is not indicated by the NERR output pin.
7.3.1 Under-Voltage Event on VCC and VIO
An under-voltage event on the power supply VCC or the power supply VIO causes the change of the operation
mode to Sleep mode, regardless of the operation mode in which the TLE6251-3G might currently operate. The
logical signals on the digital input pins EN and NSTB are also disregarded. After the power supplies VCC and VIO
are activated again, the operation mode can be changed the usual way. From Sleep mode to Stand-By mode
by a Wake-Up event or from Sleep mode direct to Normal Operation mode, Receive-Only mode by the digital
input pins EN and NSTB.
The under-voltage monitoring on the power supply VCC and VIO is combined with an internal filter time. Only if
the voltage drop on each of these two power supplies is longer present as the time tDrop >tUV(VIO) (tDrop >tUV(VCC))
the operation mode change is activated (see Figure 12).
Under-voltage events on the power supplies VCC or VIO are not indicated by the NERR pin nor by the RxD pin.
Figure 12 Under-Voltage on VIO or VCC
INH
Normal Operation mode / Receive–Only mode / Stand–By mode
or Go-To Sleep command
t
t
VCC
Sleep mode
VCC,UV
t < tUV(VCC) t > tUV(VCC)
INH
t
t
VIO
VIO,UV
t < tUV(VIO) t > tUV(VIO)
Normal Operation mode / Receive–Only mode / Stand–By mode
or Go-To Sleep command Sleep mode
Data Sheet 23 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
7.3.2 Under-Voltage Event on VS
If an under-voltage event is detected at the power supply VS, the TLE6251-3G immediately enters Stand-By
mode, regardless of the operation mode in which the TLE6251-3G operates. After the power supply VS has
been reestablished, the operation mode can be changed by applying a “high” signal to the EN pin or the NSTB
pin.
In the case the TLE6251-3G detects an under-voltage event on the VCC or VIO power supply, the TLE6251-3G
changes to Sleep mode. If the TLE6251-3G detects in Sleep mode an under-voltage event on the VS power
supply, the device enters Stand-By mode, even when the under-voltage event on the VCC or VIO power supply
is still present.
Figure 13 Under-Voltage on VS
7.4 Voltage Adaptation
The advantage of the adaptive microcontroller logic is the ratio metrical scaling of the I/O levels depending on
the input voltage at the VIO pin. Connecting the VIO input to the I/O supply of the microcontroller ensures, that
the I/O voltage of the microcontroller fits to the internal logic levels of the TLE6251-3G.
t
V
S
any mode
V
S,Poff
V
S,Pon
Power Down Stand-By mode
Data Sheet 24 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Diagnosis-Flags at NERR and RxD
8 Diagnosis-Flags at NERR and RxD
Table 3 Truth Table
NSTB EN INH Mode Event NERR RxD
1 1 High Normal No CAN bus failure1)
1) Only valid after at least four recessive to dominant edges at TxD when entering the Normal Operation mode.
1“Low”: bus
dominant,
“High”: bus
recessive
CAN bus failure1) 0
Wake-up via CAN bus/no wake-up
request detected2)
2) Only valid before four recessive to dominant edges at TxD when entering the Normal Operation mode.
1
Wake-up via pin WK3)
3) Only valid before four recessive to dominant edges at TxD when entering the Normal Operation mode.
0
10HighReceive
Only
No VS fail detected4)
4) Power-Up flag only available, when VCC and VIO are active. Power-Up flag will be cleared when entering Normal
Operation mode.
1“Low”: bus
dominant,
“High”: bus
recessive
VS fail detected4) 0
No TxD time-out,
Over-Temperature event,
RxD recessive clamping or
bus dominant time out
detected5)
5) Valid after a transition from Normal Operation mode.
1
TxD time-out,
Over-Temperature event,
RxD recessive clamping or
bus dominant time out
detected5)
0
0 0 High Stand-By Wake-up request detected6)
6) Only valid when VCC and VIO are active.
00
No Wake up request detected6) 11
0 0 Floating Sleep Wake-up request detected6) 00
No wake-up request detected6) 11
Data Sheet 25 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
General Product Characteristics
9 General Product Characteristics
9.1 Absolute Maximum Ratings
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
1. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Table 4 Absolute Maximum Ratings1)
All voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
1) Not subject to production test, specified by design.
Parameter Symbol Values Unit Note or Test Condition Number
Min. Typ. Max.
Voltages
Supply voltage VS-0.3 – 40 V – P_9.1.1
Transceiver supply voltage VCC -0.3 – 6.0 V – P_9.1.2
Logic supply voltage VIO -0.3 – 6.0 V – P_9.1.3
CANH DC voltage versus GND VCANH -40 – 40 V – P_9.1.4
CANL DC voltage versus GND VCANL -40 – 40 V – P_9.1.5
Input voltage at WK VWK -27 – 40 V – P_9.1.6
Input voltage at INH VINH -0.3 – VS + 0.3 V – P_9.1.7
Differential voltage CANH to CANL VDiff,CAN -40 – 40 V Max. differential voltage
between CAN and CANL
P_9.1.8
Logic voltages at EN, NSTB, NERR,
TxD, RxD
VLogic -0.3 – VIO V0 V<VIO < 6.0 V P_9.1.9
Currents
Maximum Output Current INH IINH(max) -5 – 0 mA – P_9.1.10
Temperatures
Junction Temperature Tj-40 – 150 °C – P_9.1.11
Storage Temperature Tstg -55 – 150 °C – P_9.1.12
ESD Susceptibility
ESD Resistivity at CANH, CANL,
and WK versus GND
VESD -8 – 8 kV HBM2) (100 pF / 1.5 kΩ)
2) ESD susceptibility, HBM according to AEC-Q100-002D.
P_9.1.13
ESD Resistivity all other pins VESD -2 – 2 kV HBM2) (100 pF / 1.5 kΩ) P_9.1.14
Data Sheet 26 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
General Product Characteristics
9.2 Functional Range
Note: Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics
table.
9.3 Thermal Resistance
Table 5 Operating Range
Parameter Symbol Values Unit Note or
Test Condition
Number
Min. Typ. Max.
Supply Voltages
Supply Voltage Range for
Normal Operation
VS(nom) 5.5 – 18 V – P_9.2.1
Extended Supply Voltage Range for Operation VS(ext) 5.0 – 40 V Parameter
Deviations
possible
P_9.2.2
Transceiver Supply Voltage VCC 4.75 – 5.25 V – P_9.2.3
Logic Supply Voltage VIO 3.0 – 5.25 V – P_9.2.4
Thermal Parameters
Junction temperature TJ-40 – 150 °C 1)
1) Not subject to production test, specified by design
P_9.2.5
Table 6 Thermal Characteristics1)
1) Not subject to production test, specified by design
Parameter Symbol Values Unit Note or Test Condition Number
Min. Typ. Max.
Thermal Resistance
Junction to Soldering Point RthJSP – – 25 K/W measured to pin 2 P_9.3.1
Junction to Ambient RthJA – 130 – K/W 2)
2) EIA/JESD 52_2, FR4, 80 × 80 × 1.5 mm; 35 µm Cu, 5 µm Sn; 300 mm2
P_9.3.2
Thermal Shutdown Junction Temperature
Thermal shutdown temp. TJSD 150 175 190 °C – P_9.3.3
Thermal shutdown hysteresis ∆T–10– K– P_9.3.4
Data Sheet 27 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
10 Electrical Characteristics
10.1 Functional Device Characteristics
Table 7 Electrical Characteristics
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS<18V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C
C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter Symbol Values Unit Note or Test Condition Number
Min. Typ. Max.
Current Consumption
Current consumption in
Normal Operation mode on
VCC and VIO
ICC+VIO – 6 10 mA Recessive state; TxD = “high” P_10.1.1
ICC+VIO – 50 80 mA Dominant state; TxD = “low”
Current consumption in
Receive-Only mode on VCC
and VIO
ICC+VIO –610mA– P_10.1.2
Current consumption in
Stand-By mode on VS
IVS –4570µAVS = WK = 12 V VCC = VIO = 5V P_10.1.3
Current consumption in
Stand-By mode on VCC and
VIO
ICC+VIO –2.510µAVS = VWK = 12 VVCC = VIO = 5V P_10.1.4
Current consumption in
Sleep mode on VS
IVS –2030µAVS = 12 V, Tj < 85°C, VCC = VIO =
0 V
P_10.1.5
Current consumption in
Sleep mode on VCC and VIO
ICC+VIO –2.510µAVS = 12 V, Tj < 85°C, VCC = VIO =
5V
P_10.1.6
Supply Resets
VCC under-voltage detection VCC,UV 234 V– P_10.1.7
VIO under-voltage detection VIO,UV 1.5 2.5 2.8 V – P_10.1.8
VS power ON detection level VS,Pon 245 V– P_10.1.9
VS power OFF detection
level
VS,Poff 23.55 V– P_10.1.10
Receiver Output RxD
“High” level output current IRD,H –-4-2mAVRxD = 0.8 V x VIO P_10.1.11
“Low” level output current IRD,L 24– mAVRxD = 0.2 V x VIO P_10.1.12
Data Sheet 28 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
Transmission Input TxD
“High” level input range VTD,H 0.7 ×
VIO
–VIO +0
.3 V
V Recessive state P_10.1.13
“Low” level input range VTD,L - 0.3 – 0.3 ×
VIO
V Dominant state P_10.1.14
“High” level input current ITD -5 0 5 µA VTxD = VIO P_10.1.15
TxD pull-up resistance RTD 10 20 40 kΩ – P_10.1.16
Mode Control Inputs EN, NSTB
“High” level input range VM,H 0.7 ×
VIO
–VIO +0
.3 V
V“Recessive” state P_10.1.17
“Low” level input range VM,L - 0.3 – 0.3 ×
VIO
V Dominant state P_10.1.18
“Low” level input current IMD -5 0 5 µA VEN and VNSTB = 0V P_10.1.19
Pull-down resistance RM50 100 200 kΩ – P_10.1.20
Diagnostic Output NERR
“High” level output voltage VNERR,H 0.8 ×
VIO
–– mAINERR = -100 µA P_10.1.21
“Low” level output voltage VNERR,L ––0.2×
VIO
mA INERR = 1.25 µA P_10.1.22
Wake Input WK
“High” level voltage range
at WK
VWK,H VS -
2V
–VS +
3V
VVEN =V
NSTB = 0 V, rising edge P_10.1.23
“Low” level voltage range at
WK
VWK,L - 27 – VS -
4V
VVEN =V
NSTB = 0 V, falling edge P_10.1.24
“High” level input current IWKH -10 -5 – µA VWK = Vs - 2 V P_10.1.25
“Low” level current IWKL –510µAVWK = Vs - 4 V P_10.1.26
Inhibit Output INH
“High” level voltage drop
∆VH = VS - VINH
∆VH–0.40.8VIINH = -1 mA P_10.1.27
–0.81.6V
1)IINH = -5 mA
Leakage current IINH,lk ––5 µASleep mode; VINH = 0 V P_10.1.28
Bus Transmitter
CANL and CANH recessive
output voltage
VCANL/H 2.0 – 3.0 V Normal Operation mode
no load
P_10.1.29
CANL and CANH recessive
output voltage
VCANL/H -0.1 – 0.1 V Sleep or Stand-By mode
no load
P_10.1.30
CANH to CANL recessive
output voltage difference
Vdiff -500 – 50 mV VTxD = VIO;
no load
P_10.1.31
Table 7 Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS<18V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C
C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter Symbol Values Unit Note or Test Condition Number
Min. Typ. Max.
Data Sheet 29 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
CANL dominant output
voltage
VCANL 0.5 – 2.25 V VTxD = 0 V; 50 Ω < RL < 65 Ω P_10.1.32
CANH dominant output
voltage
VCANH 2.75 – 4.5 V VTxD = 0 V;
50 Ω < RL < 65 Ω
P_10.1.33
CANH, CANL dominant
output voltage difference
Vdiff 1.5 – 3.0 V VTxD = 0 V; 50 Ω < RL < 65 P_10.1.34
CANL short circuit current ICANLsc 50 80 200 mA VCANLshort = 18 V P_10.1.35
CANH short circuit current ICANHsc -200 -80 -50 mA VCANHshort = 0 V P_10.1.36
Leakage current ICANHL,lk -5 0 5 µA VS = VIO = VCC = 0 V;
0 V < VCANH,L < 5 V
P_10.1.37
Bus Receiver
Differential receiver input
range - dominant
Vdiff,rdN 0.9 – 5.0 V Normal Operation mode,
In respect to CMR
P_10.1.38
Differential receiver input
range - recessive
Vdiff,drN -1.0 – 0.5 V Normal Operation mode,
In respect to CMR
P_10.1.39
Differential receiver input
range - dominant
Vdiff,rdL 1.15 – 5.0 V Sleep mode, Stand-By mode
In respect to CMR
P_10.1.40
Differential receiver input
range - recessive
Vdiff,drL -1.0 – 0.4 V Sleep mode, Stand-By mode
In respect to CMR
P_10.1.41
Common mode range CMR -12 – 12 V VCC = 5 V P_10.1.42
Differential receiver
hysteresis
Vdiff,hys – 100 – mV – P_10.1.43
CANH, CANL input
resistance
Ri10 20 30 kΩ “Recessive” state P_10.1.44
Differential input resistance Rdiff 20 40 60 kΩ “Recessive” state P_10.1.45
Table 7 Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS<18V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C
C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter Symbol Values Unit Note or Test Condition Number
Min. Typ. Max.
Data Sheet 30 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
Dynamic CAN-Transceiver Characteristics
Propagation delay
TxD-to-RxD “low”
(Recessive to dominant)
td(L),TR – 150 255 ns CL = 100 pF; VCC = VIO = 5 V; CRxD
= 15 pF
P_10.1.46
Propagation delay
TxD-to-RxD “high”
(dominant” to recessive)
td(H),TR – 150 255 ns CL = 100 pF; VCC = VIO = 5 V; CRxD
= 15 pF
P_10.1.47
Propagation delay
TxD “low” to bus dominant
td(L),T – 50 120 ns CL = 100 pF; VCC = VIO = 5 V; CRxD
= 15 pF
P_10.1.48
Propagation delay
TxD “high” to bus recessive
td(H),T – 50 120 ns CL = 100 pF; VCC = VIO = 5 V; CRxD
= 15 pF
P_10.1.49
Propagation delay
bus dominant to RxD “low”
td(L),R – 100 135 ns CL = 100 pF; VCC = VIO = 5 V; CRxD
= 15 pF
P_10.1.50
Propagation delay
bus recessive to RxD “high”
td(H),R – 100 135 ns CL = 100 pF; VCC = VIO = 5 V; CRxD
= 15 pF
P_10.1.51
Min. hold time go to sleep
command
thSLP 82550µs– P_10.1.52
Min. wake-up time on
pin WK
tWK(local) 51020µs– P_10.1.53
Min. dominant time for bus
wake-up
tWake 0.75 3 5 µs – P_10.1.54
TxD permanent dominant
disable time
tTxD 0.3 0.6 1.0 ms – P_10.1.55
Bus permanent time-out tBus,t 0.3 0.6 1.0 ms – P_10.1.56
VCC, VµC undervoltage filter
time
tUV(VIO)tUV(
VCC)
200 320 480 ms – P_10.1.57
Time for mode change tMode –20– µs
1) P_10.1.58
1) Not subject to production test, specified by design.
Table 7 Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS<18V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C
C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter Symbol Values Unit Note or Test Condition Number
Min. Typ. Max.
Data Sheet 31 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
10.2 Diagrams
Figure 14 Test Circuit for Dynamic Characteristics
Figure 15 Timing Diagrams for Dynamic Characteristics
5
GND
2
4
14
6
1
9WK
10
CANH
R
L
V
IO
NSTB
EN
TxD
RxD
3
V
CC
100
nF
100
nF = =V
CC
V
S
100 nF
13
12 CANL
C
L
C
RxD
V
IO
td(L),R
t
VDIFF
td(L),TR
td(H),R
td(H),TR
td(L),T
t
GND
VTxD
VIO
td(H),T
0.9 V 0.5 V
t
GND
0.2 x VIO
0.8 x VIO
VRxD
VIO
Data Sheet 32 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Application Information
11 Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not
be regarded as a description or warranty of a certain functionality, condition or quality of the device.
11.1 Application Example
Figure 16 Application Circuit Example
ECU
ECU
Micro
Controller
E.g. XC22xx
GND
TLE6251-3G
WK
9
GND
2
100
nF
100
nF
100
nF
10 kΩ
CANH
13
1)
51 µH
CANL
12
VS
N.C.
11
INH
7
10
100
nF
e.g. TLE 4476
(3.3/5 V) or
TLE 4471
TLE 4276
TLE 4271
GND
VS
6
14
8
EN
NSTB
NERR
4
RxD
1
TxD
5
VIO
3
VCC
VQ2
INH
VI1 +22
µF
+22
µF
5 V
100
nF
+
22
µF
VQ1
STB 8
RxD 4
TxD 1
3
VCC
GND
2
CANH
7
1)
51 µH
CANL
6
SPLIT
5
e. g. TLE 4270
VQ
VI
GND
Micro
Controller
E.g. XC22xx
GND
100
nF
100
nF
+22 µF
5 V
100
nF
+
22
µF
60 Ω
CAN
Bus
60 Ω
VBat
4.7 nF 1)
60 Ω60 Ω
4.7 nF 1)
1) Optional, according to the car manufacturer requirements
TLE6251DS
Data Sheet 33 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Application Information
11.2 ESD Robustness according to IEC61000-4-2
Test for ESD robustness according to IEC61000-4-2 “Gun test” (150 pF, 330 Ω) have been performed. The
results and test conditions are available in a separate test report.
11.3 Voltage Drop over the INH Output
Figure 17 INH output voltage drop versus output current (typical values only!)
11.4 Mode Change to Sleep mode
Mode changes are applied either by a host command, an Wake-Up event or by an under-voltage event. To
trigger a mode change by a host command or in other words by a signal change on the digital input pins EN
and NSTB all power supplies, VS VIO and VCC need to be available.TLE6251-3G.
By setting the EN pin to “high” and the NSTB pin to “low”, the TLE6251-3G enters the Go-To-Sleep command
and after the time t = thSLP expires, the TLE6251-3G enters into the Sleep mode (see Chapter 5.5). For any mode
change, also for a mode change to Sleep mode the TLE6251-3G disregards the signal on the CAN bus.
Therefore the TLE6251-3G can enter Sleep mode and remain in Sleep mode even when there is a short circuit
on the CAN bus, for example CANH shorted to VS or VCC.
Table 8 ESD Robustness according to IEC61000-4-2
Performed Test Result Unit Remarks
Electrostatic discharge voltage at pin VS, CANH, CANL and WK versus GND ≥ 9 kV 1)Positive pulse
1) ESD susceptibility “ESD GUN” according to “Gift ICT Evaluation of CAN Transceiver “Section 4.3. (IEC 61000-4-2:
2001-12) -Tested by external test house (IBEE Zwickau, EMC Testreport Nr. 07a-04-09 referenced to the TLE6251-2G).
Electrostatic discharge voltage at pin VS, CANH, CANL and WK versus GND ≤ -9 kV 1)Negative pulse
Voltage Drop on the INH output pin
0,00
1,00
0,00 1,00 2,00 3,00 4,00 5,00
INH Output Current (mA)
Voltage Drop (V)
TJ = 150°C TJ = 25°C
TJ = -40°C
Data Sheet 34 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Application Information
In order to recognize a remote Wake-Up, the TLE6251-3G requires a signal change from recessive to dominant
before the Wake-Up filter time starts (see Figure 6 and Figure 18).
Figure 18 Mode change to Sleep while the CANH bus is dominant
11.5 Further Application Information
• Please contact us for information regarding the pin FMEA.
• Existing Application Note
• For further information you may contact http://www.infineon.com/transceiver
CANH
CANL
INH
t = tWake
Go-To Sleep
command
Normal
Operation mode
t
t
Sleep mode
no Wake-Up
Wake-Up
NSTB
EN
t
t
t = thSLP
„Recessive“ to „Dominant“
change
t = tWake
Stand-By mode
RxD
t
Data Sheet 35 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Package information
12 Package information
Figure 19 PG-DSO-14
1) (Plastic dual small outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant
with government regulations the device is available as a green product. Green products are RoHS-Compliant
(i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
Further information on packages
https://www.infineon.com/packages
1) Dimension in mm
Data Sheet 36 Rev. 1.22
2018-07-17
TLE6251-3G
High Speed CAN Transceiver with Wake and Failure Detection
Revision History
13 Revision History
Table 9 Revision History
Revision Date Changes
1.22 2018-07-17 Update Data Sheet Rev.1.22 based on Data Sheet Rev. 1.21:
• Update package drawing
•Update Layout style
1.21 2017-04-11 Update Data Sheet Rev.1.21 based on Data Sheet Rev. 1.2:
• Editorial changes
1.2 2016-04-20 Update Data Sheet Rev.1.2 based on Data Sheet Rev. 1.1:
• Data Sheet updated to new style template.
• Added description for power-up behavior in Stand-by Mode on Page 12: “After first
power-up or after an undervoltage event on VS a wake-up is not signaled on RxD
and NERR pin”.
• Added footnote in Table 3: “After first power-up or after an undervoltage event on
VS a wake-up is not signaled on RxD and NERR pin”.
1.1 2011-05-23 Update Data Sheet Rev.1.1 based on Data Sheet Rev. 1.0:
• All Pages:
correct spelling and grammar.
• Update cover page, with new Infineon logo.
• Page 7, Figure 3: updated.
• Page 9, Figure 4: updated.
• Page 18, Figure 10: updated.
• Page 20, Figure 11, updated.
• Page 22, Figure 13, updated.
• Page 25, table 5, pos. 9.2.1:
New supply voltage range VS(Nom) from 5.5 V to 18 V.
• Page 25, table 5, pos. 9.2.2:
New extended supply voltage range VS(Nom) from 5.0 V to 40 V.
• Page 26ff, table 7, update table title:
New supply range 5.5 V < VS<18V.
• Page 29, table 7, pos. 10.1.58:
Changed to typical value.
• Page 30, Figure 15: updated.
• Page 33, table 8:
Change algebraic sign of the negative pulse
• Page 33:
Add new chapter 11.4
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2018-07-17
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2018 Infineon Technologies AG.
All Rights Reserved.
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