20 Mbps push-pull optocoupler for industrial logic isolation
The FODM8071 is a single-channel digital optoisolator from onsemi that delivers 20 Mbps data rate with a push-pull, totem-pole output. It is designed for isolating high-speed digital signals in industrial fieldbuses, PLC digital I/O, and motor-drive feedback paths. The output type eliminates the need for a pull-up resistor and directly drives CMOS or TTL logic inputs. Propagation delay is 55 ns max, and rise/fall times are 5.8 ns / 5.3 ns typ, keeping signal edge degradation low at 20 Mbps.
Isolation and transient immunity for motor-drive environments
With 3750 Vrms isolation and a common-mode transient immunity of 20 kV/µs minimum, the FODM8071 maintains output state integrity during fast switching events in inverter legs or motor-drive power stages. The 20 kV/µs CMTI rating is a key spec for avoiding false pulses in noisy industrial environments. The operating temperature range of -40°C to 110°C covers industrial and outdoor telecom enclosures where ambient heat and cold extremes are routine.
Supply flexibility and package footprint
The FODM8071 operates from a 3V to 5.5V supply, so it works with both 3.3V and 5V logic families without a separate level shifter. Input is DC-coupled with a typical forward voltage of 1.35V and a maximum forward current of 20 mA. It comes in a 5-lead Mini-Flat package. The surface-mount package is supplied in Tube.
Active production status and ordering
It is ROHS3 compliant. onsemi is the sole manufacturer. Pricing and lead time are confirmed per RFQ against your BOM quantity. The part is sourced through our supply chain; submit an RFQ for current availability and competitive pricing.