TXB0104GXUR

Overview

The TXB0104GXUR is a four-channel bidirectional voltage-level translator manufactured by Texas Instruments. It utilizes two independent configurable power-supply rails to facilitate signal translation between different logic families. The A port accepts supply voltages from 1.2V to 3.6V, while the B port supports 1.65V to 5.5V, ensuring VCCA does not exceed VCCB. This architecture enables universal low-voltage bidirectional conversion across standard nodes including 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V. The device features automatic direction sensing and includes an output-enable (OE) input for controlling high-impedance states during power-up or power-down sequences.

Feature Summary

• Supports bidirectional data transmission with automatic direction sensing capabilities
• Utilizes dual independent power rails allowing flexible voltage node translation
• Includes Ioff circuitry to prevent damaging current backflow during partial power-down modes

Applications

• Mobile phone systems
• Handheld terminals
• Portable computing devices

Procurement Notes

Verify the specific package suffix GXUR against official Texas Instruments documentation to confirm pinout and thermal characteristics. Ensure design compatibility with the required voltage domains, specifically that VCCA remains lower than or equal to VCCB. Confirm availability of the UQFN package variant through authorized distributors, as packaging options may vary by region and production lot.

Selection Notes

Select this component when interfacing low-voltage logic families requiring bidirectional translation without external control signals. The automatic direction sensing simplifies PCB layout by eliminating manual OE pin management. Verify that the target application operates within the specified temperature range and that the ESD protection levels meet system requirements for portable electronics.

Part Context

This part belongs to the TXB0104 family of voltage-level translators designed for general-purpose low-voltage applications. It serves as a bridge between different logic standards in mixed-voltage systems. The family is characterized by its ability to operate with separate power supplies on each side of the translation boundary, providing isolation and flexibility in system design.

Replacement Considerations

Direct replacements include other variants within the TXB0104 series such as TXB0104PWR or TXB0104DRG4, provided the package type difference is accommodated in the design. Cross-reference datasheets to ensure identical electrical specifications and pin configurations before substitution.