It is a general-purpose part, not a specific interface transceiver, so it works as a drop-in isolation barrier for SPI, UART, or GPIO signals where the data rate stays at or below 1 Mbps. The 475 ns max propagation delay (tpLH/tpHL) and 14 ns max pulse-width distortion mean it handles asynchronous signalling without skew-induced errors, but it will not support full-speed SPI at 10 MHz or CAN FD — that is where the sibling ISO7220ADRG3 (25 Mbps) steps in.
25 kV/µs CMTI and the industrial noise floor
In a factory-automation PLC or a servo drive, that rating keeps the data path from glitching on the rising edge of a 600 V bus. The 1 ns typical rise/fall time is fast enough for clean edge detection but not so fast that it radiates — the slew rate is inherently limited by the 1 Mbps ceiling.