UM3304QT

Overview

The UM3304QT is a 4-bit bidirectional voltage-level translator manufactured by Union Semiconductor, Inc. It features auto direction sensing and ±4kV ESD protection. The device supports simultaneous translation between two independent power domains, enabling flexible interfacing between different logic families without requiring external direction control pins.

Feature Summary

• Bidirectional data transfer capability between A and B ports
• Automatic detection of signal direction for simplified integration
• Integrated electrostatic discharge protection on all channels

Applications

• Interfacing low-voltage microcontrollers with higher voltage peripherals
• Level shifting in mixed-signal embedded systems
• Portable equipment requiring multi-voltage domain communication

Procurement Notes

Verify the manufacturer designation as Union Semiconductor, Inc., rather than Union Semiconductor International Limited, against official datasheets. Confirm the specific package type and tape/reel specifications required for your assembly process. Ensure compatibility with the intended voltage levels before procurement.

Selection Notes

Select this component when automatic direction sensing is required to reduce pin count and simplify PCB layout. It is suitable for applications needing robust ESD protection alongside standard voltage translation. Compare its ±4kV rating against alternatives offering higher protection if harsh environments are involved.

Part Context

This part belongs to the UM3304 series of voltage translators from Union Semiconductor. It shares functional similarities with other 4-bit translators but distinguishes itself through its specific ESD protection ratings and auto-direction sensing architecture designed for efficient system integration.

Replacement Considerations

Texas Instruments TXB0104 is a comparable alternative offering similar functionality with higher ESD protection ratings. Verify pinout compatibility and voltage range specifications before substituting.