TXB0104 Level Shifter Hookup Guide

Contributors: SFUptownMaker
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The TXB0104 is a bi-directional signal level shifter made by Texas Instruments. It features four channels of input/output signals and an output enable line that allows the signal lines to be placed in a high impedance mode when they are unneeded.

SparkFun Voltage-Level Translator Breakout - TXB0104

SparkFun Voltage-Level Translator Breakout - TXB0104


Depending on the high and low side voltages, the bandwidth on the individual signal channels can range from 20Mbps up to 100Mbps, making the TXB0104 suitable for higher speed signals such as SPI.

SparkFun's TXB0104 breakout board makes it easy to use this powerful chip in your projects.

Suggested Reading

Before going further with this guide, you should be familiar with the topics covered in these tutorials:

Serial Peripheral Interface (SPI)

SPI is commonly used to connect microcontrollers to peripherals such as sensors, shift registers, and SD cards.

Logic Levels

Learn the difference between 3.3V and 5V devices and logic levels.