SI8631ED-AS

Digital Isolators Overview

The SI8631ED-AS is a unidirectional digital isolator from the Si863x series, manufactured by Skyworks Solutions. It features three channels (two forward, one reverse) with capacitive coupling isolation technology. The device supports a data rate of 150 Mb/s and offers an insulation voltage of 5000 Vrms. It operates within a supply voltage range of 2.5 V to 5.5 V, consuming 3.9 mA of power. Key timing parameters include an 8 ns propagation delay and 4 ns rise/fall times. It is housed in a 16-pin SOIC package and functions reliably between -40°C and +125°C.

Digital Isolators Feature Summary

• Provides high-speed signal transmission at 150 Mb/s using capacitive coupling for robust isolation.
• Features automotive-grade qualification with 10 kV surge capability alongside standard 5 kV isolation.
• Delivers low propagation delay and pulse width distortion for precise timing applications.

Digital Isolators Applications

• Automotive electronic control units requiring high-voltage isolation
• Industrial communication interfaces demanding fast data rates
• Power conversion systems needing reliable galvanic separation

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm it denotes the Automotive grade variant with 10 kV surge rating. Ensure the order matches the required SOIC-16 tube packaging configuration. Confirm AEC-Q100 compliance status if automotive certification is mandatory for the project. Cross-reference the datasheet revision to ensure compatibility with current manufacturing standards.

Digital Isolators Selection Notes

Select this component when both high-speed performance and automotive reliability are required. The 150 Mb/s rate suits demanding bus protocols, while the 5000 Vrms isolation ensures safety. Consider the 3-channel unidirectional layout for simple interface needs. Evaluate the 3.9 mA power consumption against system thermal constraints. Verify that the 16-SOIC footprint fits the target PCB design.

Digital Isolators Part Context

This part belongs to the Si863x family of digital isolators, which utilize Skyworks' proprietary capacitive coupling technology. This family is designed to replace traditional magnetic isolators, offering smaller form factors and lower power consumption. The SI8631ED-AS specifically targets applications requiring automotive qualification and enhanced surge immunity compared to standard industrial variants.

Digital Isolators Replacement Considerations

Check Skyworks documentation for direct pin-compatible substitutes within the Si863x series. Variants like SI8631ET-AS may offer similar specs but different packaging or temperature ranges. Ensure any replacement maintains the 10 kV surge rating and 150 Mb/s data rate requirements.