What this isolator does on the board
It is a general-purpose part — no integrated DC-DC converter, so you supply the isolated-side power separately. The two channels are both oriented the same way (2 inputs on side 1, 0 on side 2), making it a straight signal repeater for SPI, UART, or GPIO lines where you need to break ground loops or meet safety isolation in an industrial or motor-drive environment.
Rated at 1Mbps, this isolator handles standard UART (115200 baud is easy), moderate-speed SPI (up to 1 MHz clock), and general-purpose digital I/O. The propagation delay is 475ns max each way, with 14ns max pulse-width distortion — that matters for timing-sensitive protocols like SPI where the clock-to-data skew budget is tight. Rise and fall times are 1ns typical, so expect clean edges at 1 Mbps but not much margin for higher-speed buses like CAN FD or fast SPI above 2 MHz. For those, you would look at the 25Mbps or 150Mbps siblings in the ISO72xx family.
Temperature range and isolation rating
The 2500Vrms isolation is a basic reinforced rating for mains-isolated interfaces in power supplies, motor drives, and PLC I/O modules. Common-mode transient immunity is specified at 25kV/µs minimum, which is enough to reject fast switching noise from a motor drive or a flyback converter without corrupting the data.
Supply voltage and power rail considerations
Runs from 3V to 5.5V on both sides, so it works with 3.3V and 5V logic without a level shifter. No isolated power means you need a separate isolated DC-DC or a rail from the secondary side — the chip draws its own supply current from each side, but the amount is not in the record. The 8-SOIC package is the standard narrow-body footprint (3.90mm width), easy to route and hand-solder for rework.
Listed as Active.