ST ST2329B User Manual

ST2329B

2-bit dual supply level translator without direction control pin, open

drain output

Datasheet − preliminary 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 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

voltage range of 1.65 to 3.6 V

voltage range of VL to 5.5 V

QFN8

(1.4 x 1.2 x 0.55 mm)

Table 1. Device summary

Order code Package Packing

Tape and

reel (3000

parts per

reel)

ST2329BQTR

QFN8

(1.4 x 1.2 x

0.55 mm)

Package topmark

■ Low-voltage system level translation

■ Mobile phones and other mobile devices

■ I

C level translation

■ UART level translation

June 2012 Doc ID 023359 Rev 1 1/22

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

www.st.com

Contents ST2329B

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2/22 Doc ID 023359 Rev 1

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: V

(device driven by open drain driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 8. AC characteristics - test conditions: V

(device driven by open drain driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 9. AC characteristics - test conditions: V

(device driven by open drain driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 10. AC characteristics - test conditions: V

(device driven by totem pole driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 11. AC characteristics - test conditions: V

(device driven by totem pole driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 12. AC characteristics - test conditions: 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. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

= 1.65 - 1.8 V

= 2.5 - 2.7 V

= 2.7 - 3.6 V

=1.65-1.8V

= 2.5 - 2.7 V

= 2.7 - 3.6 V

Doc ID 023359 Rev 1 3/22

List of figures ST2329B

List of figures

Figure 1. Pin connection (top through view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2. ST2329BQTR 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 . . . . . . . . . . . . . . . . . . . 19

Figure 8. Reel for carrier tape - 8 width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4/22 Doc ID 023359 Rev 1

ST2329B Description

1 Description

The ST2329B 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, V

and V

, 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 accepts V

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 tri-state output mode which can be used to disable all I/Os.

The ST2329B supports power-down mode when V

is grounded/floating and the device is

disabled via the OE pin.

Doc ID 023359 Rev 1 5/22

Pin settings ST2329B

2 Pin settings

2.1 Pin connection

Figure 1. Pin connection (top through view)

2.2 Pin description

Table 2. Pin description

Pin number Symbol Name and function

2I/O

3I/O

4 GND Ground

5 OE Output enable

6I/O

7I/O

VL1

VL2

VCC2

VCC1

!-V

Supply voltage

Data input/output

Supply voltage

6/22 Doc ID 023359 Rev 1

ST2329B Device block diagrams

3 Device block diagrams

Figure 2. ST2329BQTR 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

Doc ID 023359 Rev 1 7/22

+ 15 hidden pages