ST2329BQTR

Translators, Level Shifters Overview

The ST2329BQTR is a 2-bit dual supply level translator manufactured by STMicroelectronics. It provides bidirectional voltage translation without requiring a direction control pin, utilizing a transmission gate-based design. The device supports an input voltage range (VL) of 1.65 V to 3.6 V and an output voltage range (VCC) from VL up to 5.5 V. It features open-drain outputs with integrated pull-up resistors and achieves a maximum data rate of 18 Mbps when driven by a totem pole driver. The component operates within a temperature range of -40 °C to +85 °C and is housed in a QFN8 package measuring 1.4 x 1.2 x 0.55 mm.

Translators, Level Shifters Feature Summary

• Bidirectional level translation capability without the need for a dedicated direction control pin
• Supports wide voltage ranges on both sides, accommodating low-voltage ASICs/PLDs and higher voltage systems
• Integrated power-down mode that places all I/Os in high-impedance state when either supply is off
• Open-drain output architecture compatible with both totem pole and open drain drivers

Translators, Level Shifters Applications

• Low-voltage system level translation
• I2C bus level translation
• UART communication level translation
• Mobile phones and other mobile devices

Translators, Level Shifters Procurement Notes

Verify the specific ordering code ST2329BQTR against official STMicroelectronics documentation to confirm current production status and environmental compliance. Ensure the selected package variant matches the required footprint dimensions and thermal characteristics for the target PCB layout. Cross-reference datasheet revision history for any updates to electrical parameters or mechanical drawings prior to finalizing procurement specifications.

Translators, Level Shifters Selection Notes

Select this component for designs requiring simple bidirectional translation between disparate logic voltage levels without complex control signaling. The absence of a direction pin simplifies circuit topology compared to controlled translators. Verify that the driving source can sink sufficient current to overcome the internal pull-up resistance during low-state transitions. Confirm that the application environment remains within the specified operating temperature range to maintain signal integrity and timing margins.

Translators, Level Shifters Part Context

The ST2329B belongs to the ST2329 series of dual-supply level translators designed for multi-voltage system interoperability. Unlike variants such as the ST2329I which include integrated external pull-ups, the ST2329B relies on its internal open-drain structure. This family addresses the need for seamless data transfer between modern low-power digital components and legacy or higher-voltage interface standards in compact form factors.

Translators, Level Shifters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.