Adafruit TCA9548A 1-to-8 I2C Multiplexer Breakout

The Adafruit TCA9548A I2C Multiplexer breakout board allows you to connect up to 8 identical I2C devices with the same address to a single microcontroller. It acts as a gatekeeper, shuttling commands to the selected I2C port using a simple control byte.

This compact board comes with the TCA9548A chip on a breadboard-friendly breakout, complete with capacitors, pull-ups, and pull-downs for easy use. Compatible with both 3V and 5V logic levels.

Features:

• Multiplexes 8 I2C channels to a single I2C bus
• Selectable I2C address from 0x70 to 0x77
• 3V and 5V logic level compatible
• Small form factor: 30.6mm x 17.6mm x 2.7mm
• Weight: 1.8g

Technical Specifications:

• Product Dimensions: 30.6mm x 17.6mm x 2.7mm (1.2″ x 0.7″ x 0.1″)
• Weight: 1.8g
• I2C address: 0x70-0x77 selectable

View tutorial, datasheet, and schematic