ST ST2329 2-bit dual supply level translator without direction control pin
Summary
Streamline complex data communications with the ST2329, a 2-bit dual supply level translator designed for multi-voltage systems. Enabling seamless, bidirectional signal transfer between components operating at differing voltage levels (V_L and V_CC), this device manages low power consumption while ensuring compatibility across wide operational ranges. Ideal for embedded systems, mobile devices, and ASIC/PLD integration, the ST2329 simplifies level shifting without directional control pins. Included documentation provides comprehensive specifications, detailed wiring diagrams, electrical characteristics, and application notes necessary for reliable design implementation.
Page 1 Text Content
ST2329
2-bit dual supply level translator without direction control pin
Features 90 Mbps (max) data rate when driven by a totem pole driver 8 Mbps (max) data rate when driven by an open drain pole driver Bidirectional level translation without direction control pin Wide VL voltage range of 1.65 to 3.6 QFN10L (1.8 x 1.4 mm) Wide VCC voltage range of 1.80 to 5.5 Power down mode feature – when either supply is off, all I/Os are in high impedance
Description
Low quiescent current (max 12 µA) Able to be driven by totem pole and open drain The ST2329 is a 2-bit dual supply level translator drivers which provides the level shifting capability to allow
data transfer in a multi-voltage system. Externally
5.5 V tolerant enable pin
applied voltages, VCC and VL, set the logic levels
ESD performance on all pins: ±2 k V HBM
on either side of the device. It utilizes
Small package and footprint transmission gate-based design that allows QFN10L (1.8 1.4 mm) package bidirectional level translation without a control pin.
The ST2329 accepts a VL from 1.65 to 3.6 V and
Applications VCC from 1.80 to 5.5 V, making it ideal for data
transfer between low-voltage ASICs/PLD and
Low voltage system level translation
higher voltage systems. This device has a tri-state
Mobile phones and other mobile devices output mode which can be used to disable all
I/Os.
I2C level translation
UART level translation The ST2329 supports power down mode when VCC is grounded/floating and the device is disabled via the OE pin.
Table 1. Device summary
Order code Package Packaging
ST2329QTR QFN10L (1.8 x 1.4 mm) Tape and reel (3000 parts per reel)
May 2008 Rev 4 1/21
www.st.com
Page Summary Contents For ST ST2329 2-bit dual supply level translator without direction control pin
Manual Details
| Brand | Dual |
|---|---|
| Pages | 21 |
| File Size | 428.40 KB |
| Published | May 20, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What are the operating voltage ranges for the two supply sides?
The device supports V from 1.65 to 3.6 V and L from 1.80 to 5.5 V.
How is the level translation controlled or disabled?
It can be disabled via the OE pin, putting all I/Os into a high-impedance mode when low.
What is the maximum data rate supported under different driver types?
The max data rate is 90 Mbps (with totem pole) or 8 Mbps (with open drain).
Does it have power saving features?
Yes, it has a power down mode feature where all I/Os enter high impedance if either supply is off.