150Mbps and 3000Vrms — the two numbers that decide fit
The ADUM142E0BRZ-RL7 is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built around magnetic coupling. It is a general-purpose part — no integrated DC-DC converter, no specific interface protocol — just four isolation channels rated at 150Mbps each, with 3000Vrms isolation between sides. The 150Mbps data rate is enough for SPI clock lines up to 75 MHz (half-duplex) or parallel buses running at moderate speed. The 3000Vrms isolation is a standard reinforced-grade barrier for industrial applications — motor drives, PLC I/O modules, and isolated sensor interfaces. The 75kV/µs common-mode transient immunity (CMTI) means it holds data integrity even when the ground plane between two sides slews rapidly, which is the usual failure mode in inverter and switching-power-supply environments.
Timing margins and the 13 ns propagation delay
Propagation delay is 13 ns typical, 13 ns max on both rising and falling edges — symmetrical, which simplifies timing closure. Pulse-width distortion is limited to 3 ns max, so a 50% duty-cycle input stays close to 50% at the output. Rise and fall times are 2.5 ns typical each, which keeps the signal edges clean enough for the 150Mbps rate without excessive ringing. If your bus has multiple isolators in series, budget 13 ns per device plus the 3 ns distortion.