DS14C335
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DS14C335 +3.3V Supply TIA/EIA-232 3 x 5 Driver/Receiver
Check for Samples: DS14C335
1FEATURES DESCRIPTION
The DS14C335 is three driver, five receiver device
2• Conforms to TIA/EIA-232-E and CCITT V.28 which conforms to TIA/EIA-232-E and CCITT V.28
Specifications standard specifications. This device employs an
• Operates with Single +3.3V Power Supply internal DC-DC converter to generate the necessary
• Low Power Requirement— ICC 20 mA output levels from a +3.3V power supply. A
SHUTDOWN (SD) mode reduces the supply current
Maximum to 10 μA maximum. In the SD mode, one receiver is
• SHUTDOWN Mode— ICX 10 μA Maximum active, allowing ring indicator (RI) to be monitored.
• One Receiver (R5) Active During SHUTDOWN PC Board space consumption is minimized by the
• Operates up to 128 kbps— Lap-Link availability of Shrink Small Outline Packaging
(SSOP).
Compatible
• Flow Through Pinout This device's low power requirement and small
footprint makes it an ideal choice for Laptop and
• 4V/μs Minimum Slew Rate Ensured Notebook applications.
• Inter-operates with +5V UARTs
• Available in 28-lead SSOP EIAJ Type II
Package
Connection Diagram
Figure 1. DS14C335
Top View
See Package Number DB0028A
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
DS14C335
SNLS090C –MARCH 2000–REVISED APRIL 2013
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Functional Diagram
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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Absolute Maximum Ratings(1)(2)
Supply Voltage (VCC)−0.3V to + 6V
V+Pin (VCC−0.3V) to +14V
V−Pin +0.3V to −14V
Input Voltage (DIN, SD) −0.3V to + 5.5V
Driver Output Voltage (V++ 0.3V) to (V−−0.3V)
Receiver Input Voltage ±25V
Receiver Output Voltage −0.3V to (VCC+ 0.3V)
Junction Temperature +150°C
Storage Temperature Range −65°C to +150°C
Lead Temperature (Soldering 4 sec.) +260°C
Short Circuit Duration (DOUT) continuous
Maximum Package Power Dissipation @ SSOP DB Package 1286 mW
+25°C Derate DB Package 10.3 mW/°C above +25°C
ESD Rating (HBM, 1.5 kΩ, 100 pF) ≥2.0 kV
(1) “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be specified. They are not meant to imply
that the devices should be operated at these limits. The tables of “Electrical Characteristics” specify conditions for device operation.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
Recommended Operating Conditions Min Max Units
Supply Voltage (VCC) 3.0 3.6 V
DC-DC Converter Capacitors (C1–C5) 0.47 μF
Operating Free Air Temperature (TA) DS14C335 0 +70 °C
Electrical Characteristics(1)(2)
Over recommended operating conditions, SD = 0.8V, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Units
DEVICE CHARACTERISTICS
V+ Positive Power Supply No Load DIN = 0.8V +9.3 V
V−Negative Power Supply C1–C5 = 0.47 μF DIN = 2.0V −9.0 V
ICC Supply Current No Load 11.5 20 mA
ICX SHUTDOWN Supply Current RL= 3 kΩ, SD = VCC, 5.5V 1.0 10 μA
VIH High Level Enable Voltage SD 2.0 V
VIL Low Level Enable Voltage GND 0.8 V
IIH High Level Enable Current 2.0V ≤VIN ≤5.5V +2.0 μA
IIL Low Level Enable Current GND ≤VIN ≤0.8V −2.0 μA
DRIVER CHARACTERISTICS(3)
VIH High Level Input Voltage DIN 2.0 V
VIL Low Level Input Voltage GND 0.8 V
IIH High Level Input Current 2.0V ≤VIN ≤5.5V +1.0 μA
IIL Low Level Input Current GND ≤VIN ≤0.8V −1.0 μA
VOH High Level Output Voltage RL= 3 kΩ+5.0 +7.1 V
VOL Low Level Output Voltage −6.3 −5.0 V
IOS+ Output High Short Circuit Current VO= 0V, VIN = 0.8V(4) −40 −16.5 −8 mA
IOS−Output Low Short Circuit Current VO= 0V, VIN = 2.0V(4) 6 12.3 40 mA
(1) Typical values are given for VCC = 3.3V and TA= +25°C.Ó
(2) Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground
unless otherwise specified.
(3) Generator characteristics for driver input: f = 64 kHz (128 kbits/sec), tr= tf< 10 ns, VIH = 3V, VIL = 0V, duty cycle = 50%.
(4) Only one driver output shorted at a time.
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Electrical Characteristics(1)(2) (continued)
Over recommended operating conditions, SD = 0.8V, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Units
ROOutput Resistance −2V ≤VO≤+2V, VCC = GND = 0V 300 Ω
RECEIVER CHARACTERISTICS(5)(6)
VTH Input High Threshold Voltage R1–R5, SD = 0.8V 1.4 2.4 V
R5, 2.0V ≤SD ≤5.5V 2.0 2.8 V
VTL Input Low Threshold Voltage R1–R5, SD = 0.8V 0.4 1.1 V
R5, 2.0V ≤SD ≤5.5V 0.1 0.5 V
VHY Hysteresis 50 300 mV
RIN Input Resistance VIN = ±3V to ±15V 3.0 3.8 7.0 kΩ
IIN Input Current VIN = +15V 2.14 5.0 mA
VIN = +3V 0.43 1.0 mA
VIN =−3V −1.0 −0.43 mA
VIN =−15V −5.0 −2.14 mA
VOH High Level Output Voltage VIN =−3V, IOH =−1 mA 2.4 3.1 V
VIN =−3V, IOH =−100 μA 2.8 3.28 V
VOL Low Level Output Voltage VIN = +3V, IOL = +2 mA 0.23 0.4 V
(5) Receiver characteristics are specified for SD = 0.8V. When SD = 2.0V, receiver five (R5) is active and meets receiver parameters in
SHUTDOWN (SD) mode, unless otherwise specified.
(6) Generator characteristics for receiver input: f = 64 kHz (128 kbits/sec), tr= tf= 200 ns, VIH = 3V, VIL =−3V, duty cycle = 50%.
Switching Characteristics(1)
Over recommended operating conditions, SD = 0.8V, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Units
DRIVER CHARACTERISTICS
tPLH Propagation Delay LOW to HIGH RL= 3 kΩ0.1 0.6 1.0 μs
CL= 50 pF
tPHL Propagation Delay HIGH to LOW 0.1 0.6 1.0 μs
(Figure 2,Figure 3)
tSK Skew |tPLH–tPHL| 0 0.2 μs
SR1 Output Slew Rate RL= 3 kΩto 7 kΩ, CL= 50 pF (Figure 3) 4 13 30 V/μs
SR2 Output Slew Rate RL= 3 kΩ, CL= 2500 pF (Figure 3) 4 10 30 V/μs
tPLS Propagation Delay LOW to SD (Figure 6,Figure 7) 0.48 ms
RL= 3 kΩ
tPSL Propagation Delay SD to LOW 1.88 ms
CL= 50 pF
tPHS Propagation Delay HIGH to SD 0.62 ms
tPSH Propagation Delay SD to HIGH 1.03 ms
RECEIVER CHARACTERISTICS
tPLH Propagation Delay LOW to HIGH CL= 50 pF 0.1 0.4 1.0 μs
(Figure 4,Figure 4)
tPHL Propagation Delay HIGH to LOW 0.1 0.6 1.0 μs
tSK Skew |tPLH–tPHL| 0.2 0.8 μs
tPLS Propagation Delay LOW to SD (Figure 8,Figure 9) 0.13 μs
RL= 1 kΩ
tPSL Propagation Delay SD to LOW 1.0 μs
CL= 50 pF
tPHS Propagation Delay HIGH to SD 0.19 μs
R1–R4 Only
tPSH Propagation Delay SD to HIGH 0.58 μs
(1) Typical values are given for VCC = 3.3V and TA= +25°C.Ó
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Parameter Measurement Information
Figure 2. Driver Propagation Delay and Slew Rate Test Circuit
Figure 3. Driver Propagation Delay and Slew Rate Timing
Figure 4. Receiver Propagation Delay Test Circuit
Figure 5. Receiver Propagation Delay Timing
Figure 6. Driver SHUTDOWN (SD) Delay Test Circuit
Figure 7. Driver SHUTDOWN (SD) Delay Timing
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Figure 8. Receiver SHUTDOWN (SD) Delay Test Circuit
Figure 9. Receiver SHUTDOWN (SD) Delay Timing
PIN DESCRIPTIONS
VCC (Pin 3). Power supply pin for the device, +3.3V (±0.3V).
V+ (Pin 1). Positive supply for TIA/EIA-232-E drivers. Recommended external capacitor—0.47 μF (16V). This supply is not intended to be
loaded externally.
V−(Pin 25). Negative supply for TIA/EIA-232-E drivers. Recommended external capacitor—0.47 μF (16V). This supply is not intended to be
loaded externally.
C1+, C1−(Pins 6, 24). External capacitor connection pins. Recommended capacitor—0.47 μF (6.3V).
C2+, C2−(Pins 2, 4). External capacitor connection pins. Recommended capacitor—0.47 μF (16V).
C3+, C3−(Pins 28, 26). External capacitor connection pins. Recommended capacitor—0.47 μF (6.3V).
SHUTDOWN (SD) (Pin 23). A High on the SHUTDOWN pin will lower the total ICC current to less than 10 μA, providing a low power state.
In this mode receiver R5 remains active. The SD pin should be driven or tied low (GND) to disable the shutdown mode.
DIN 1–3 (Pins 7, 8, 9). Driver input pins are JEDEC 3.3V standard compatible.
DOUT 1–3 (Pins 22, 21, 20). Driver output pins conform to TIA/ElA-232 -E levels.
RIN 1–5 (Pins 19, 18, 17, 16, 15). Receiver input pins accept TIA/EIA-232-E input voltages (±25V). Receivers specifies hysteresis of TBD
mV. Unused receiver input pins may be left open. Internal input resistor (5 kΩ) pulls input LOW, providing a failsafe HIGH output.
ROUT 1–5 (Pins 10, 11, 12, 13, 14). Receiver output pins are JEDEC 3.3V standard compatible.
GND (Pin 27). Ground Pin.
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APPLICATION INFORMATION
9-PIN SERIAL PORT APPLICATION
In a typical Data Terminal Equipment (DTE) to Data Circuit-Terminating Equipment (DCE) 9-pin de-facto
interface implementation, 2 data lines and 6 control lines are required. The data lines are TXD and RXD and the
control lines are RTS, DTR, DSR, DCD, CTS and RI. The DS14C335 is a 3 x 5 Driver/Receiver and offers a
single chip solution for the DTE interface as shown in Figure 10.
Ring Indicator (RI) is used to inform the DTE that an incoming call is coming from a remote DCE. When the
DS14C335 is in SHUTDOWN (SD) mode, receiver five (R5) remains active and monitors RI circuit. This active
receiver (R5) alerts the DTE to switch the DS14C335 from SHUTDOWN to active mode.
Figure 10. Typical DTE Application
MOUSE DRIVING
The DS14C335 was tested for drive current under the following mouse driving conditions:
• Two driver outputs set at VOH and their outputs were tied together (paralleled), sourcing current to supply the
V+ terminal of the mouse electronics
• One driver output set at VOL to sink the current from the V−terminal of the mouse electronics
• One receiver was used to accept data from the mouse
• Power Supply Voltage (VCC): 3.0V to 3.6V
Completion of the testing (performed by TI's Data Transmission Applications Group and a major PC
manufacturer) concluded that the DS14C335 and it's DC-DC Convertor supplied adequate drive capability to
power a typical PC mouse. The mouse tested was specified with the following conditions:
10 mA at +6V
5.0 mA at −6V
Since driver current is limited, it is recommended that newer lower power mice be specified for battery powered
applications. Using older high power mice is wasteful of precious battery charge.
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EXTERNAL DC-DC CONVERTOR COMPONENTS
The DS14C335 with it's unique DC-DC Convertor triples the power supply voltage (3.0V) to +9.3V and then
inverts it to a −9V potential. This unique convertor ONLY requires 5 external surface mount 0.47 μF capacitors.
The five identical components were chosen to simplify PCB layout and the procurement of components. The
DS14C335's DC-DC Convertor also provides a larger signal swing (higher at RS-232 standard data rates) which
translates to more noise margin for the rejection of ground potential differences, induced noise, and crosstalk
compared to other DC-DC convertor schemes which only provide limited signal swing and limited noise margin.
DC-DC CONVERTOR CAPACITORS
The use of polarized capacitors is not required. However, if they are used, the polarity indicated in the
DS14C335 Functional Diagram must be honored for proper operation. Surface mount capacitors or ceramic
capacitors may be used, however, for optimal efficiency, capacitors with a low effective series resistance (ESR)
should be used. Values in the low Ohms(Ω) is normally acceptable.
INTEROPERATION WITH +5V UARTS
The DS14C335 provides full RS-232 driver output levels and a single chip solution for the popular 9-pin defacto
serial port. This device may be used in either pure +3V applications or mixed power supplied +3V/+5V
applications. The Driver Input (DIN) and ShutDown (SD) input pins can directly accept full +5V levels without the
need for any external components. The Receiver Output (ROUT) is specified at 2.4V minimum while sourcing 1
mA. This level is compatible with standard TTL thresholds. For a complete discussion on “Interoperation of the
DS14C335 with +5V UARTs” please see TI Application Note AN-876 (SNLA163).
POWER DISSIPATION IN REAL RS-232 APPLICATIONS
The DS14C335 DC-DC Convertor uses special circuitry that helps limit the increase in power supply current as
frequency increases. A complete description of power dissipation and calculations for RS-232 applications can
be found in TI Application Note AN-914 (SNLA037) titled “Understanding Power Requirements in RS-232
Applications”. Typical performance curves are also located in this datasheet for quick reference.
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Typical Performance Characteristics
Supply Current Supply Current
vs vs
Frequency Frequency
vs vs
Driver Loads Driver Loads
Figure 11. Figure 12.
Supply Power Supply Current
vs vs
Data Rate Frequency (Receiver)
Figure 13. Figure 14.
Driver Output
vs
Data Rate
Figure 15.
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REVISION HISTORY
Changes from Revision B (April 2013) to Revision C Page
• Changed layout of National Data Sheet to TI format ............................................................................................................ 9
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PACKAGE OPTION ADDENDUM
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Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
DS14C335MSA LIFEBUY SSOP DB 28 47 TBD Call TI Call TI 0 to 70 DS14C335
MSA
DS14C335MSA/NOPB LIFEBUY SSOP DB 28 47 Green (RoHS
& no Sb/Br) CU SN Level-3-260C-168 HR 0 to 70 DS14C335
MSA
DS14C335MSAX/NOPB LIFEBUY SSOP DB 28 2000 Green (RoHS
& no Sb/Br) CU SN Level-3-260C-168 HR 0 to 70 DS14C335
MSA
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
PACKAGE OPTION ADDENDUM
www.ti.com 16-Oct-2015
Addendum-Page 2
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
DS14C335MSAX/NOPB SSOP DB 28 2000 330.0 16.4 8.4 10.7 2.4 12.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 23-Sep-2013
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
DS14C335MSAX/NOPB SSOP DB 28 2000 367.0 367.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 23-Sep-2013
Pack Materials-Page 2
MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE
4040065 /E 12/01
28 PINS SHOWN
Gage Plane
8,20
7,40
0,55
0,95
0,25
38
12,90
12,30
28
10,50
24
8,50
Seating Plane
9,907,90
30
10,50
9,90
0,38
5,60
5,00
15
0,22
14
A
28
1
2016
6,50
6,50
14
0,05 MIN
5,905,90
DIM
A MAX
A MIN
PINS **
2,00 MAX
6,90
7,50
0,65 M
0,15
0°–ā8°
0,10
0,09
0,25
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150
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