Opto-emulator devices are capable of being pin-compatible and drop-in replaceable with many optocoupler devices. Opto-emulators offer significant reliability and performance advantages compared to traditional optocouplers, low input current, and wider temperature ranges.

Opto-emulators replicates the characteristics of traditional optocouplers without the drawbacks of aging and thermal drift by using an input-diode emulator and output stage separated by a silicon oxide (SiO2) insulation barrier. Opto-emulators can be used to block high voltages, isolate grounds, and prevents noise currents from interfering with or damaging sensitive circuitry.