This is information on a product in full production.
February 2013 DocID023359 Rev 3 1/23
1
ST2329B
2-bit dual supply level translator without direction control pin, open
drain output
Datasheet - production data
Features
18 Mbps (max.) data rate when driven by
a totem pole driver
6.8 Mbps (max.) data rate when driven by an
open drain pole driver
Bi-directional level translation without direction
control pin
Wide VL voltage range of 1.65 to 3.6 V
Wide VCC voltage range of VL to 5.5 V
Power-down mode feature: when either supply
is OFF, all I/Os are in high impedance
Low quiescent current (max. 4 µA)
Able to be driven by totem pole and open drain
drivers
5.5 V tolerant Enable pin
ESD performance on all pins: ±2 kV HBM
Small package and footprint: QFN8
(1.4 x 1.2 x 0.55 mm) package
Applications
Low-voltage system level translation
Mobile phones and other mobile devices
I2C level translation
UART level translation
QFN8
(1.4 x 1.2 x 0.55 mm)
Table 1. Device summary
Order code Package Packing Package
topmark
ST2329BQTR
QFN8
(1.4 x 1.2 x
0.55 mm)
Tape and
reel (3000
parts per
reel)
3A
www.st.com
Contents ST2329B
2/23 DocID023359 Rev 3
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Device block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Supplementary notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Driver requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Load driving capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.3 Power-off feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.4 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.2.1 Device driven by open drain driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.2.2 Device driven by totem pole driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DocID023359 Rev 3 3/23
ST2329B List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. AC characteristics - test conditions: VL = 1.65 - 1.8 V
(device driven by open drain driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 8. AC characteristics - test conditions: VL=2.5 - 2.7V
(device driven by open drain driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 9. AC characteristics - test conditions: VL = 2.7-3.6V
(device driven by open drain driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 10. AC characteristics - test conditions: VL=1.65-1.8V
(device driven by totem pole driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 11. AC characteristics - test conditions: VL= 2.5 - 2.7 V
(device driven by totem pole driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 12. AC characteristics - test conditions: VL= 2.7 - 3.6 V
(device driven by totem pole driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 13. Test circuit switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 14. Waveform symbol value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 15. Mechanical data for QFN8 (1.4 x 1.2 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . 20
Table 16. QFN8 carrier tape dimensions - 8 mm width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 17. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
List of figures ST2329B
4/23 DocID023359 Rev 3
List of figures
Figure 1. Pin connection (top through view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3. Application block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 5. Waveform - propagation delay (f = 1 MHz; 50% duty cycle). . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6. Waveform - output enable and disable time (f = 1 MHz; 50% duty cycle) . . . . . . . . . . . . . 18
Figure 7. Package outline for QFN8 (1.4 x 1.2 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . 20
Figure 8. QFN8 carrier tape - 8 mm width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 9. QFN8 reel for carrier tape - 8 mm width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
DocID023359 Rev 3 5/23
ST2329B Description
1 Description
The ST2329B device is a 2-bit dual supply level translator which provides the level shifting
capability to allow data transfer in a multi-voltage system. Externally applied voltages, VCC
and VL, set the logic levels on either side of the device. It utilizes a transmission gate-based
design that allows bi-directional level translation without a control pin.
The ST2329B device accepts VL from 1.65 to 3.6 V and VCC from 1.80 to 5.5 V, making it
ideal for data transfer between low-voltage ASICs/PLD and higher voltage systems. This
device has a tristate output mode which can be used to disable all I/Os.
The ST2329B device supports power-down mode when VCC is grounded/floating and the
device is disabled via the OE pin.
Pin settings ST2329B
6/23 DocID023359 Rev 3
2 Pin settings
2.1 Pin connection
Figure 1. Pin connection (top through view)
2.2 Pin description
$0Y
Table 2. Pin description
Pin number Symbol Name and function
1V
LSupply voltage
2I/O
VL1 Data input/output
3I/O
VL2 Data input/output
4 GND Ground
5 OE Output enable
6 I/OVCC2 Data input/output
7 I/OVCC1 Data input/output
8V
CC Supply voltage
DocID023359 Rev 3 7/23
ST2329B Device block diagrams
3 Device block diagrams
Figure 2. Block diagram
1. When OE is LOW, all I/Os are in high-impedance mode.
2. The ST2329BQTR has 2 channels. For simplicity, the diagram above shows only 1 channel.
Figure 3. Application block diagram
Supplementary notes ST2329B
8/23 DocID023359 Rev 3
4 Supplementary notes
4.1 Driver requirements
The ST2329BQTR may be driven by an open drain or totem pole driver and the nature of
the device output is “open drain”. It must not be used to drive a pull-down resistor as the
impedance of the output at HIGH state depends on the pull-up resistor placed at the I/Os.
As the device has pull-up resistors on both the I/OVCC and I/OVL ports, the user needs to
ensure that the driver is able to sink the required amount of current. For example, if the
settings are VCC =5.5V, V
L= 4.3 V, and the pull-up resistor is 10 k, then the driver must
be able to sink at least (5.5 V / 10 k) + (4.3 V / 10 k)1 mA and still meet the VIL
requirements of the ST2329BQTR.
4.2 Load driving capability
To support the open drain system, the one-shot transistor is turned on only during high
transition at the output side. When it drives a high state, after the one-shot transistor is
turned off, only the pull-up resistor is able to maintain the state. In this case, the resistive
load is not recommended.
4.3 Power-off feature
In some applications where it may be required to turn off one of the power supplies
powering up the level translator, the user can turn off the VCC only when the OE pin is low
(device is disabled). There is no current consumption in VL due to floating gates or other
causes, and the I/Os are in a high-impedance state in this mode.
4.4 Truth table
Table 3. Truth table
Enable Bi-directional input/output
OE I/OVCC I/OVL
H(1)
1. High level VL power supply referred.
H(2)
2. High level VCC power supply referred.
H(1)
H(1) L L
L Z(3)
3. Z = high-impedance.
Z(3)
DocID023359 Rev 3 9/23
ST2329B Maximum rating
5 Maximum rating
Stressing the device above the rating listed in Table 4: Absolute maximum ratings may
cause permanent damage to the device. These are stress ratings only, and operation of the
device at these or any other conditions above those indicated in Table 5: Recommended
operating conditions of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
Recommended operating conditions
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
VLSupply voltage -0.3 to 4.6 V
VCC Supply voltage -0.3 to 6.5 V
VOE DC control input voltage -0.3 to 6.5 V
VI/OVL DC I/OVL input voltage (OE = GND or VL) -0.3 to VL + 0.3 V
VI/OVCC DC I/OVCC input voltage (OE = GND or VL) -0.3 to VCC + 0.3 V
IIK DC input diode current -20 mA
II/OVL DC output current ±25 mA
II/OVCC DC output current ±25 mA
ISCTOUT Short-circuit duration, continuous 40 mA
PDPower dissipation(1)
1. 500 mW: 65 oC derated to 300 mW by 10 mW / °C: 65 °C to 85 °C.
500 mW
TSTG Storage temperature -65 to 150 °C
TL Lead temperature (10 seconds) 300 °C
ESD Electrostatic discharge protection (HBM) ±2 kV
Table 5. Recommended operating conditions
Symbol Parameter Min. Typ. Max. Unit
VLSupply voltage 1.65 3.6 V
VCC Supply voltage VL5.5 V
VOE
Input voltage
(OE output enable pin, VL power supply referred) 03.6 V
VI/OVL I/OVL voltage 0 VLV
VI/OVCC I/OVCC voltage 0 VCC V
Top Operating temperature -40 85 °C
dt/dV Input rise and fall time 0 1 ns/V
Electrical characteristics ST2329B
10/23 DocID023359 Rev 3
6 Electrical characteristics
6.1 DC characteristics
Over recommended operating conditions unless otherwise noted. All typical values are at
TA = 25 °C.
Table 6. DC characteristics
Symbol Parameter VLVCC Test conditions
Value
UnitTA = 25 oC -40 to 85 oC
Min. Typ. Max. Min. Max.
VIHL
High level input
voltage (I/OVL)
1.65
VL to 5.5
1.4
1.4
V
2.0 1.6
1.6
2.5 2.0
2.0
3.0 2.4
2.4
3.6 2.8
2.8
VILL
Low level input
voltage (I/OVL)
1.65
VL to 5.5
0.3 0.3
V
2.0
0.4 0.4
2.5
0.5 0.5
3.0
0.6 0.6
3.6
0.8 0.8
VIHC
High level input
voltage (I/OVCC)1.65 to VCC
1.8
1.6
1.6
V
2.5 2.3
2.3
3.0 2.7
2.7
3.6 3.3
3.3
4.3 3.5
3.5
5.5 4.2
4.2
VILC
Low level input
voltage (I/OVCC)
1.65 - 2.5 3 - 5.5
0.3
V
2.7 - 3.6 3.6 - 5.5
0.5
VIH-OE
High level input
voltage (OE)
1.65
VL to 5.5
1.0
1.0
V
2.0 1.2
1.2
2.5 1.4
1.4
3.0 1.6
1.6
3.6 2.0
2.0
DocID023359 Rev 3 11/23
ST2329B Electrical characteristics
Symbol Parameter VLVCC Test conditions
Value
UnitTA = 25 oC -40 to 85 oC
Min. Typ. Max. Min. Max.
VIL-OE
Low level input
voltage (OE)
1.65
VL to 5.5
0.33 0.33
V
2.0
0.40 0.40
2.5
0.50 0.50
3.0
0.60 0.60
3.6
0.75 0.75
VOLL
Low level output
voltage (I/OVL)1.65 to 3.6 VL to 5.5 IO = 1.0 mA
I/OVCC≤ 0.15 V
0.40 0.40 V
VOLC
Low level output
voltage (I/OVCC)1.65 to 3.6 VL to 5.5 IO = 1.0 mA
I/OVL ≤0.15 V
0.40 0.40 V
IOE
Control input
leakage current
(OE)
1.65 to 3.6 VL to 5.5 VOE = GND or
VL
±0.1 ±0.1 µA
IIO_LKG
High impedance
leakage current
(I/OVL, I/OVCC)
1.65 to 3.6 VL to 5.5 OE = GND
±0.1 ±0.1 µA
IQVCC
Quiescent
supply current
VCC
1.65 to 3.6 VL to 5.5
Only pull-up
resistor
connected to I/O
33.54µA
IQVL
Quiescent
supply current
VL
1.65 to 3.6 VL to 5.5
only pull-up
resistor
connected to I/O
0.01 0.1 1µA
IZ-VCC
High impedance
quiescent
supply current
VCC
1.65 to 3.6 VL to 5.5
OE = GND;
only pull-up
resistor
connected to I/O
33.54µA
IZ-VL
High impedance
quiescent
supply current
VL
1.65 to 3.6 VL to 5.5
OE = GND;
only pull-up
resistor
connected to I/O
0.01 0.1 1µA
Table 6. DC characteristics (continued)
Electrical characteristics ST2329B
12/23 DocID023359 Rev 3
6.2 AC characteristics
6.2.1 Device driven by open drain driver
Load CL=15pF; R
UP =4.7k
; driver tR=t
F≤ 6 ns over temperature range -40 °C to
85 °C.
Table 7. AC characteristics - test cond itions: VL = 1.6 5 - 1.8 V (device driven by open drain driver)
Symbol Parameter VCC =1.8-2.5V V
CC =2.7-3.6V V
CC =4.3-5.5V Unit
Min. Max. Min. Max. Min. Max.
tRVCC Rise time I/OVCC 80.0 60.0 45.0 ns
tFVCC Fall time I/OVCC 23.2 33.9 53.3 ns
tRVL Rise time I/OVL 60.0 45.0 35.0 ns
tFVL Fall time I/OVL 16.4 17.6 16.9 ns
tI/OVL-VCC
Propagation delay time
I/OVL-LH to I/OVCC-LH
I/OVL-HL to I/OVCC-HL
tPLH 3.4 2.0 2.0 ns
tPHL 13.9 19.1 30.2 ns
tI/OVCC-VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-LH
tPLH 2.0 2.0 2.6 ns
tPHL 8.6 9.0 9.5 ns
tPZL
tPLZ
Output enable and
disable time
En 10 10 10 ns
Dis 40 40 40 ns
DRData rate(1) 1.8 2.2 3.4 MHz
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of
the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle
deviation not less than 30%.
DocID023359 Rev 3 13/23
ST2329B Electrical characteristics
Table 9. AC characteristics - test conditions: VL = 2.7 - 3.6 V (device driven by open drain driver)
Table 8. AC characteristics - test conditions: VL= 2.5 - 2.7 V (device driven by open dra in driver)
Symbol Parameter VCC = 2.7 - 3.6 V VCC = 4.3 - 5.5 V Unit
Min. Max. Min. Max.
tRVCC Rise time I/OVCC 70.0 50.0 ns
tFVCC Fall time I/OVCC 14.8 19.1 ns
tRVL Rise time I/OVL 50.0 35.0 ns
tFVL Fall time I/OVL 9.8 10.0 ns
tI/OVL-VCC
Propagation delay time
I/OVL-LH to I/OVCC-LH
I/OVL-HL to I/OVCC-HL
tPLH 2.0 2.0 ns
tPHL 8.2 11.6 ns
tI/OVCC-VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-LH
tPLH 2.0 2.0 ns
tPHL 5.3 5.9 ns
tPZL
tPLZ
Output enable and
disable time
En 66ns
Dis 40 40 ns
DRData rate(1) 2.2 3.0 MHz
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of
the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle
deviation not less than 30%.
Symbol Parameter VCC = 4.3-5.5V Unit
Min. Max.
tRVCC Rise time I/OVCC 55.0 ns
tFVCC Fall time I/OVCC 17.2 ns
tRVL Rise time I/OVL 40.0 ns
tFVL Fall time I/OVL 9.7 ns
tI/OVL-VCC
Propagation delay time
I/OVL-LH to I/OVCC-LH
I/OVL-HL to I/OVCC-HL
tPLH 2.0 ns
tPHL 10.6 ns
tI/OVCC-VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL
tPLH 2.0 ns
tPHL 4.8 ns
tPZL
tPLZ
Output enable and disable time
En 6ns
Dis 40 ns
DRData rate(1)
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of
the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle
deviation not less than 30%.
3.0 MHz
Electrical characteristics ST2329B
14/23 DocID023359 Rev 3
6.2.2 Device driven by totem pole driver
Load CL=15pF; R
UP =10k
; driver tR = tF≤6 ns over temperature range -40 °C to
85 °C.
Table 10. AC characteristics - test conditions: VL=1.65-1.8V
(device driven by tot em pole driver)
Symbol Parameter VCCB = 1.8 - 2.5 V VCCB =2.7-3.6V V
CCB =4.3-5.5V Unit
Min. Max. Min. Max. Min. Max.
tRVCC Rise time I/OVCC 11.2 6.9 2.0 ns
tFVCC Fall time I/OVCC 23.2 33.9 43.9 ns
tRVL Rise time I/OVL 8.7 8.6 8.5 ns
tFVL Fall time I/OVL 16.4 17.6 16.9 ns
tI/OVL-
VCC
Propagation delay time
I/OVL-LH to I/OVCC-LH
I/OVL-HL to I/OVCC-HL
tPLH 6.5 4.5 4.1 ns
tPHL 13.9 19.1 30.2 ns
tI/OVCC-
VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL
tPLH 4.5 4.6 4.0 ns
tPHL 8.6 9.0 9.5 ns
tPZL
tPLZ
Output enable and
disable time
En 15 15 20 ns
Dis 40 40 40 ns
DRData rate(1) 6.4 4.5 3.4 MHz
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of
the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle
deviation not less than 30%.
DocID023359 Rev 3 15/23
ST2329B Electrical characteristics
Table 11. AC characteristics - test conditions: VL= 2.5 - 2.7 V (device driven by totem pole driver)
Symbol Parameter VCC =2.7- 3.6V V
CC =4.3- 5.5V Unit
Min. Max. Min. Max.
tRVCC Rise time I/OVCC 6.9 4.0 ns
tFVCC Fall time I/OVCC 14.8 19.1 ns
tRVL Rise time I/OVL 5.3 5.6 ns
tFVL Fall time I/OVL 9.8 10.0 ns
tI/OVL-VCC
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL
tPLH 3.2 3.1 ns
tPHL 8.2 11.6 ns
tI/OVCC-VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL
tPLH 2.6 2.2 ns
tPHL 5.3 5.9 ns
tPZL
tPLZ
Output enable and
disable time
En 812 ns
Dis 40 40 ns
DRData rate(1) 96.8 MHz
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of
the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle
deviation not less than 30%.
Table 12. AC characteristics - test conditions: VL= 2.7 - 3.6 V (device driven by totem pole driver)
Symbol Parameter VCC =4.3- 5.5V Unit
Min. Max.
tRVCC Rise time I/OVCC 4.3 ns
tFVCC Fall time I/OVCC 17.2 ns
tRVL Rise time I/OVL 4.5 ns
tFVL Fall time I/OVL 9.7 ns
tI/OVL-VCC
Propagation delay time
I/OVL-LH to I/OVCC-LH
I/OVL-HL to I/OVCC-HL
tPLH 2.7 ns
tPHL 10.6 ns
tI/OVCC-VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL
tPLH 1.9 ns
tPHL 4.8 ns
tPZL
tPLZ
Output enable and disable time
En 7ns
Dis 40 ns
DRData rate(1) 7.2 MHz
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of
the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle
deviation not less than 30%.
Electrical characteristics ST2329B
16/23 DocID023359 Rev 3
Figure 4. Test circuit
Table 13. Test circuit switches
Test Switch
Driving I /OVL Driving I/OVCC Open drain driving
tPLH, tPHL Open Open Open
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3X OVH
JHQHUDWRU '87
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9&&
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9/
5XS 5XS
DocID023359 Rev 3 17/23
ST2329B Waveforms
7 Waveforms
Figure 5. Waveform - propagation delay (f = 1 MHz; 50% duty cycle)
Table 14. Waveform symbol value
Symbol
Driving I/OVL Driving I/OVCC
1.8 V ≤VL≤ VCC ≤
2.5 V 3.3 V ≤VL≤ VCC ≤
5.0 V 1.8 V ≤VL≤ VCC ≤
2.5 V 3.3 V ≤VL≤ VCC ≤
5.0 V
VIH VLVLVCC VCC
VIM 50% VL50% VL50% VCC 50% VCC
VOM 50% VCC 50% VCC 50% VL50% VL
Waveforms ST2329B
18/23 DocID023359 Rev 3
Figure 6. Waveform - output enable and disable time (f = 1 MHz; 50% duty cycle)
DocID023359 Rev 3 19/23
ST2329B Package mechanical data
8 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK is an ST trademark.
Package mechanical data ST2329B
20/23 DocID023359 Rev 3
Figure 7. Package outline fo r QFN8 (1.4 x 1.2 x 0.55 mm) - 0.40 mm pitch
1. Dimension b applies to the metallized terminal and is measured between 0.10 and 0.20 mm from the
terminal tip. If the terminal has the optional radius on the other end of the terminal, dimension b should not
be measured in that radius area.
2. Applied only for terminals.
3. Bilateral coplanarity zone applies to the exposed heatsink slug as well as the terminals.
4. Dimensions and tolerancing conform to ASME Y14.5M - 1994.
Table 15. Mechanical data fo r QFN8 (1.4 x 1.2 x 0.55 mm) - 0.40 mm pitch
Symbol Dimensions (mm) Note
Min. Nom. Max.
A 0.50 0.55 0.60
A1 0.00 - 0.05
b 0.15 0.20 0.25 (1)
1. Dimension b applies to the metallized terminal and is measured between 0.10 and 0.20 mm
from the terminal tip. If the terminal has the optional radius on the other end of the terminal,
dimension b should not be measured in that radius area.
B0-12°
(2)
2. All dimensions are in millimeters, B is in degrees.
e 0.40 BSC
N8
(3)
3. N is the total number of terminals.
L 0.25 0.30 0.35
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DocID023359 Rev 3 21/23
ST2329B Package mechanical data
Figure 8. QFN8 carrier tape - 8 mm width
1. Measured from centerline of sprocket hole to centerline of pocket.
2. Cumulative tolerance of 10 sprocket holes is ± 0.20.
3. Measured from centerline of sprocket hole to centerline of pocket.
4. Other material available.
5. Typical SR of form tape max. 10° /SR.
6. All dimensions are in millimeters unless otherwise stated.
Figure 9. QFN8 reel for carrier tape - 8 mm width
Table 16. QFN8 carrier tape dimensions - 8 mm width
Carrier tape
Symbol Ao Bo Ko F P1 W
Dimensions 1.52 ± 0.05 1.52 ± 0.05 0.73 ± 0.05 3.50 ± 0.05 4.00 ± 0.10 8.00 ± 0.10
Revision history ST2329B
22/23 DocID023359 Rev 3
9 Revision history
Table 17. Document revision history
Date Revision Changes
25-Jun-2012 1 Initial release.
03-Aug-2012 2 Updated Section 6.2.1, Section 6.2.2, Table 10, Table 11, and
Table 12, added carrier tape (Figure 8 and Table 16).
18-Feb-2013 3 Updated document status (production data).
Minor corrections throughout document.
DocID023359 Rev 3 23/23
ST2329B
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