3000Vrms isolation — what it buys you
This is a 2-channel, unidirectional digital isolator from the iCoupler family, built with magnetic coupling. The 3000Vrms isolation rating is the headline safety spec: it provides reinforced isolation for applications that need to separate high-voltage and low-voltage domains — think motor-drive control signals, industrial PLC I/O, or isolated power-supply feedback paths. The 1Mbps data rate is enough for most serial interfaces (UART, SPI at moderate clock speeds) but check your bus timing budget: propagation delay is 50ns max each way, and pulse-width distortion is held to 10ns max.
Common-mode transient immunity matters here
The 25kV/µs minimum CMTI is the spec that separates this part from older optocoupler-based isolators. In a motor drive or inverter, the switching node can slam the isolation barrier with a high dV/dt — if the isolator's CMTI is too low, data gets corrupted or the output glitches. 25kV/µs is a solid figure for most industrial drives; it means the part holds its state through fast common-mode edges without needing a snubber or extra filtering on the digital side.
Package and footprint
Housed in an 8-pin SOIC with 3.90mm body width (the standard 150-mil footprint). Surface-mount only, no through-hole option. No exposed pad — standard SOIC-8 thermal management applies.