SI88422EC-IS

Overview

The SI88422EC-IS is a Skyworks Solutions digital isolator featuring two unidirectional channels and an integrated DC-DC converter. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 3750 Vrms. The device supports data rates up to 100 Mb/s with a typical propagation delay of 18 ns. It operates within a supply voltage range of 3 V to 5.5 V and functions reliably across a temperature range of -40°C to +125°C. Packaged in a 16-SOIC (Wide) surface-mount format, it meets AEC-Q100 automotive qualification standards.

Feature Summary

• Integrates a secondary sensing feedback-controlled DC-DC converter for isolated power generation
• Provides high-speed signal transmission via capacitive coupling technology
• Features unidirectional channel configuration for general-purpose isolation applications

Applications

• Automotive electronic control units requiring certified isolation
• Industrial communication interfaces such as CAN and LIN bus systems
• Power conversion circuits needing isolated gate drive signals

Procurement Notes

Verify the specific suffix designation against official Skyworks documentation to confirm package type and tape-and-reel specifications. Ensure the component matches the required AEC-Q100 automotive grade certification if used in vehicle applications. Cross-reference the datasheet revision date to confirm compatibility with current design requirements and regulatory standards.

Selection Notes

Select this component when bidirectional isolation is not required and an integrated power source is needed on the isolated side. The 16-SOIC wide package offers thermal advantages over standard packages. Consider the 100 Mb/s data rate limit and 18 ns propagation delay for timing-sensitive designs. Verify that the 3750 Vrms isolation rating meets the safety requirements of the target application circuit.

Part Context

This part belongs to the Si88x2x series of high-speed digital isolators from Skyworks Solutions. The series combines signal isolation with integrated DC-DC conversion capabilities. It is designed for robust performance in noisy environments where galvanic isolation is critical for system safety and signal integrity.

Replacement Considerations

SI88422EC-ISR is listed as a substitute variant.