The HCNW3120-500E is a logic output opto-coupler from Broadcom with a channel count of 1 and a forward current of 10mA. It has an isolation power of 700 mW and an output type of Push-Pull, Totem Pole. It also has a clear status indication of green LED, and works at a voltage range of 5.25 V. It is a low-saturation 4-pin device with TTL/CMOS compatible input. It features built-in isolation, hi-reliability, fast switching speeds and low propagation delay. It is used to isolate and transfer signals between high voltage applications such as AC motors, power supplies, electric charges etc.