Capacitive coupling and common-mode transient immunity
Capacitive coupling delivers lower power per channel than optocouplers and supports the 25Mbps data rate without external bias components. The typical common-mode transient immunity (CMTI) of 25kV/µs ensures the isolation barrier stays intact during fast voltage transients from motor-drive switching or relay contact arcs — a key parameter for industrial environments where ground potential differences can exceed several hundred volts per microsecond.