Broadcom ACPL-844-000E Phototransistor-Optocoupler DIP-16 Type (misc.) AC-PhotoTX-Coupler 4-channel

The main task of an optocoupler in electronic devices is the electrical separation and the interference suppression of the signal. This is necessary in a large number of applications, ranging from power supply and motor control to data communication and data processing. Optocouplers eliminate all kinds of electromagnetic interferences. One achieves a secure signal separation.

Price: 1.79 from Conrad Electronic