SI88422EC-ASR

Overview

The SI88422EC-ASR is a Skyworks Solutions digital isolator featuring two unidirectional channels in a 16-SOIC package. It operates with a data rate of 100 Mb/s and supports a supply voltage range of 3 V to 5.5 V. The device provides an insulation voltage of 5000 Vrms and exhibits a propagation delay of 18 ns. It functions within a temperature range of -40 °C to +125 °C, drawing a typical operating current of 7.5 mA.

Feature Summary

• Integrates a fully integrated secondary sensing feedback-controlled DC-DC converter for high-speed isolation
• Provides robust common-mode transient immunity suitable for noisy industrial environments
• Supports general-purpose digital signal transmission across isolated boundaries

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power electronics interfaces with high voltage noise

Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and tape specifications. Ensure the component meets required AEC-Q100 or RoHS standards if applicable to your design. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the SOIC-16 footprint matches your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a high-voltage isolation rating of 5000 Vrms is required alongside integrated power conversion capabilities. It is suitable for designs needing bidirectional data flow via unidirectional channels rather than true bidirectional logic. Consider the 16-pin SOIC package size for space-constrained applications. Verify that the 100 Mb/s data rate aligns with system timing requirements.

Part Context

This device belongs to the Si88422 series of high-speed digital isolators from Skyworks Solutions. The series is designed to replace traditional optocouplers in modern electronic systems. It combines signal isolation with on-chip DC-DC conversion to simplify board design. The family targets applications demanding high reliability and compact form factors.

Replacement Considerations

Check for SI88422ED-ASR variants which may differ in packaging or specific electrical tolerances. Verify compatibility with existing SOIC-16 footprints when substituting similar Skyworks isolators. Ensure any replacement maintains the 5000 Vrms isolation rating and integrated DC-DC converter functionality.