20 Mbps isolated digital link in a 6-SOIC package
The FOD8173 is a single-channel high-speed optocoupler from onsemi that delivers 20 Mbps data rate with a push-pull, totem-pole output stage. It is housed in a 6-SOIC (6.80 mm width) surface-mount package, making it a compact fit for isolated digital communication links in industrial, telecom, and power-conversion systems.
Isolation and transient immunity for noisy environments
Rated at 5000 Vrms isolation voltage, the FOD8173 provides reinforced insulation suitable for safety-critical applications such as motor drives, inverters, and medical equipment. The minimum common-mode transient immunity of 20 kV/µs ensures the output does not glitch when high-voltage switching edges couple across the isolation barrier — a key parameter in variable-frequency drive and solar inverter designs.
Supply flexibility and switching speed
Operating from a 3V to 5.5V supply, the FOD8173 interfaces directly with both 3.3V and 5V logic families without external level shifters.