Digital isolator and photocoupler technology

Optocouplers have been the solution for signal isolation for over 40 years. Today, however, digital isolators manufactured with CMOS process technology are favored by designers due to their superior performance and reliability.

This page introduces the basic technologies of photocouplers and digital isolators while comparing their performance and reliability.

Isolator product page

Here is a product page for a digital isolator with useful features.

• S86xx: 1ch~6ch 150Mbps digital isolator
• Si838x: Bidirectional input 8ch digital isolator to replace photocoupler for 24V PLC
• Si834x: Isolated smart switch for industrial IO
• Si826x: Optocoupler-compatible isolated gate driver

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