I²C bus isolator with magnetic coupling
It uses magnetic coupling to provide galvanic isolation, with a common-mode transient immunity of 20kV/µs — enough to reject the noise spikes common in motor-drive and inverter environments. The data rate is 100kHz, matching standard-mode I²C, and the supply range of 3V to 5.5V lets it sit on either a 3.3V or 5V bus without a level shifter.
Two unidirectional channels — one per direction
The part has two unidirectional channels, with one input on side 1 and one input on side 2. That means one channel carries data from the primary side to the isolated side, and the other carries it back — exactly what a two-wire I²C interface needs for the SDA and SCL lines. No isolated power is provided on-chip, so each side needs its own supply rail within the 3V to 5.5V range.
Not for automotive under-hood, outdoor telecom cabinets, or industrial floor applications where ambient temperature exceeds 70°C.