There are TWO SETS of power and data lines that are ELECTRICALLY ISOLATED! Each set is on one half of the isolation barrier.

Power Pins:

  • VCC - this is the power pin for each side of the isolator. Each side must be powered, provide (separated) 3 to 5 VDC on both sides!
  • GND - this is the ground pin for each side of the isolator. Each side must be powered, connect the reference ground on either side.

I2C Logic pins:

  • SCL - the I2C clock pin, connect to your I2C clock line on either side. There is a 10K pullup to the side's VCC
  • SDA - the I2C data pin, connect to your I2C data line on either side. There is a 10K pullup to the side's VCC
  • STEMMA QT - These connectors allow you to connectors to dev boards with STEMMA QT connectors or to other things with various associated accessories

This guide was first published on Feb 09, 2021. It was last updated on Feb 09, 2021.

This page (Pinouts) was last updated on Oct 12, 2021.

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