TITXB0104Q Automotive 4-Bit Level Translator
Overview
TXB0104Q is a 4-bit bidirectional voltage-level translator from Texas Instruments, intended for interfacing digital signals between logic domains that use different supply voltages. The Q1 suffix indicates an automotive-qualified device, making it suitable for applications that need robust mixed-voltage signal translation in vehicle electronics and other demanding designs. It is commonly used wherever low-pin-count bidirectional lines must cross between voltage rails without adding protocol complexity.
Why Choose This Part
TXB0104Q simplifies mixed-voltage digital design by providing four channels of automatic bidirectional translation in a single IC. That reduces the need for direction-control pins and makes it easy to connect devices that share a common digital interface but use different I/O voltages. The automotive-grade Q1 variant is a good fit when qualification and robustness matter.
Applications
Getting Started
Start by verifying that both sides of the interface stay within the allowed supply and logic ranges for the device family, and follow TI's application guidance for TXB-type translators. For quick evaluation, use a bench supply, two compatible logic domains, and a simple GPIO test on the target MCU or evaluation board. TI documentation and reference designs are the best place to confirm pull-up strength, edge rates, and which signal types are appropriate for auto-direction translators.
