Adafruit ISO1540 Bidirectional I2C Isolator

Key Features: Add full electrical isolation between two sides of an I2C bus TI ISO1540 is fully bi-directional Supports up to 1 MHz clock rates and clock-stretching Works with 3 to 5V DC power or logic (separate on either side of course) Comes with STEMMA QT connectors Sometimes you'll find yourself with an I2C bus controller on one side, and an I2C bus device on the other and you gotta keep em (electrically) separated. Maybe because one is Earth-grounded, maybe because you've got some funky power monitoring setup, maybe you want to reduce noise.Whatever it is, you can use the Adafruit ISO1540 Bidirectional I2C Isolator to add full electrical isolation between two sides of an I2C bus. The chip we use, the TI ISO1540 is fully bi-directional, supports up to 1 MHz clock rates, supports clock-stretching, works with 3 to 5V DC power or logic (separate on either side of course), with 2500 V-RMS isolationUsage is easy - you get power/ground/clock/data breakout pads for each side as well as a