BUY PC817X https://www.utsource.net/itm/p/5921114.html
DEVICE SPECIFICATION FOR PHOTOCOUPLER
Manufacturer: Sharp Package: DIP-4 Description: The PC817X is an optocoupler manufactured by Sharp. It is an optically isolated, 4-pin DIP package that contains a light-emitting diode (LED) and a phototransistor. Features: High isolation voltage: 5.7kV Low input current: 1mA High CTR: 50% to 600% Low output saturation voltage: 0.2V High speed response: 0.5μs High temperature stability: -40°C to +85°C Applications: Isolation of digital signals Isolation of analog signals Isolation of power supplies Isolation of motor control circuits Isolation of audio signals Isolation of data lines (For reference only)