CNY74-4H-LB

Overview

The CNY74-4H-LB is a quad optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates four independent channels, each consisting of an aluminum gallium arsenide infrared-emitting diode optically coupled to a silicon NPN phototransistor. The device provides high isolation voltage and is designed for applications requiring multiple isolated signal paths. It features a standard DIP package suitable for through-hole mounting.

Feature Summary

• Integrates four independent channels within a single package
• Utilizes aluminum gallium arsenide infrared-emitting diodes for input
• Features silicon NPN phototransistors for output detection

Applications

• Multi-channel data transmission systems
• Industrial control interface circuits
• Signal isolation in measurement equipment

Procurement Notes

Verify the specific suffix 'LB' against official Vishay documentation to confirm pinout configuration and mechanical dimensions. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.

Selection Notes

Select this component when multiple isolated channels are required in a compact form factor. Consider the switching speed and current transfer ratio specifications relative to the target application's bandwidth and load requirements.

Part Context

This part belongs to the CNY74 series of quad optocouplers. It shares architectural similarities with other Vishay multi-channel isolators but offers distinct channel density and packaging options compared to single or dual channel variants.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.