CMTI and the motor-drive environment
That figure matters when the isolator sits between a PWM-driven inverter phase and a controller — fast switching edges on the high-voltage side can couple common-mode spikes across the barrier. A 75kV/µs rating means the part holds its output state through those transients without glitching the logic side. For variable-frequency drives, servo amplifiers, or any application with SiC/GaN switching edges, this is the spec that decides whether the isolation holds or the data path corrupts.
ROHS3 compliant, so it passes EU material restrictions without exemption paperwork. The iCoupler series has a long production history and multiple channel-count variants sharing the same package footprint, which makes BOM risk low — if ADI ever issues a PCN, the migration path within the family is usually pin-compatible.