SI86S631EC-AS1

Digital Isolators Overview

The SI86S631EC-AS1 is a Skyworks Solutions digital isolator featuring three unidirectional channels with SPI compatibility. It utilizes capacitive coupling technology to provide an insulation voltage of 3750 Vrms and supports data rates up to 150 Mb/s. The device operates within a supply voltage range of 2.5 V to 5.5 V and offers a propagation delay of 8 ns. It includes a common-mode transient immunity rating of 150 kV/µs and functions reliably across a temperature range of -40°C to +125°C. Packaged in a 16-SOIC format, it is designed for high-speed signal isolation.

Digital Isolators Feature Summary

• SPI-compatible digital isolation architecture
• High common-mode transient immunity
• Capacitive coupling isolation technology

Digital Isolators Applications

• Industrial automation control systems
• Motor drive gate driver interfaces
• Inverter and converter isolation circuits

Digital Isolators Procurement Notes

Verify the specific suffix AS1 against official Skyworks documentation to confirm package type and tape/reel specifications. Ensure the selected variant meets AEC-Q100 automotive qualification requirements if applicable to the target application environment. Cross-reference datasheet revision dates to confirm parameter consistency.

Digital Isolators Selection Notes

Select this component when SPI protocol support is required alongside high-speed isolation capabilities. The 150 kV/µs CMTI rating makes it suitable for noisy environments with fast-switching power stages. Consider the 16-SOIC footprint for PCB layout constraints and verify thermal dissipation needs relative to the 275 mW power dissipation limit.

Digital Isolators Part Context

This part belongs to the Si86Sx family of SPI-compatible digital isolators from Skyworks Solutions. It complements general-purpose isolators by offering protocol-specific optimization for serial peripheral interface applications. The series provides robust isolation solutions for automotive and industrial sectors requiring reliable high-speed data transmission across isolation barriers.

Digital Isolators Replacement Considerations

Direct substitutes include other Skyworks Si86S63x variants with matching channel counts and insulation ratings. Verify pinout compatibility and electrical parameters such as propagation delay and CMTI before swapping. Non-Skyworks alternatives require careful evaluation of SPI timing margins and isolation voltage derating factors.