TXB0104DR

Overview

The TXB0104DR is a four-channel bidirectional voltage-level translator manufactured by Texas Instruments. It utilizes two independent configurable power rails, with Port A supporting 1.2V to 3.6V and Port B supporting 1.65V to 5.5V, ensuring VCCA does not exceed VCCB. The device features auto direction sensing for seamless data translation between different voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V. Key electrical parameters include a maximum propagation delay of 7.4 ns and a data rate of 100 Mb/s. It operates within an extended temperature range of -40°C to +85°C and includes Ioff circuitry to prevent current backflow during partial power-down conditions.

Feature Summary

• Supports universal low-voltage bidirectional translation between multiple standard voltage nodes using separate configurable power rails.
• Features integrated Ioff circuitry that disables outputs to prevent damaging current backflow when the device is powered down.
• Includes output-enable functionality allowing all outputs to be placed in a high-impedance state via a dedicated control input.

Applications

• Mobile phones and smartphones
• Tablets and portable computing devices
• Desktop computers and peripheral interfaces

Procurement Notes

Verify the specific package marking and manufacturer date code against official Texas Instruments documentation to confirm authenticity. Ensure the ordering suffix matches the required tape-and-reel configuration for automated assembly processes. Cross-reference the component lot traceability with the manufacturer's quality certificates to guarantee compliance with RoHS directives and automotive or industrial reliability standards where applicable.

Selection Notes

Select this component when interfacing logic families requiring bidirectional level shifting between low-voltage domains (1.2V–3.6V) and higher voltage domains (1.65V–5.5V). The device is suitable for applications demanding high-speed data transmission up to 100 Mb/s with minimal propagation delay. Consider the SOIC-14 package constraints and thermal dissipation requirements relative to the PCB layout and ambient operating conditions.

Part Context

This part belongs to the TXB0104 family of voltage-level translators from Texas Instruments. It is designed for general-purpose low-voltage bidirectional conversion in digital systems. The DR suffix indicates the SOIC-14 surface-mount package variant. It serves as a critical interface component for connecting microcontrollers, memory, and peripherals operating at different supply voltages within the same system bus architecture.

Replacement Considerations

The TXB0104PWR is a pin-compatible alternative available in a TSSOP-14 package. Verify package dimensions and thermal characteristics before substitution. Other members of the TXB010x family may offer similar electrical performance but require confirmation of pinout compatibility and specific package availability for direct replacement.