SI8631BT-AS

Digital Isolators Overview

The SI8631BT-AS is a general-purpose automotive digital isolator from Skyworks Solutions, featuring three unidirectional channels in a 16-SOIC package. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage and withstands 10 kV surge capability. The device supports data rates up to 150 Mb/s with a typical propagation delay of 8 ns and common-mode transient immunity of 60 kV/µs. Operating on a supply voltage range of 2.5 V to 5.5 V, it draws a maximum operating current of 3.9 mA. The component functions within a temperature range of -40°C to +125°C and includes no shutdown control.

Digital Isolators Feature Summary

• Provides galvanic isolation for automotive applications with high surge tolerance
• Utilizes capacitive coupling for reliable signal transmission across isolation barrier
• Features ultra-low power consumption suitable for energy-efficient designs

Digital Isolators Applications

• Automotive electronic control units requiring high-voltage isolation
• Industrial communication interfaces needing robust surge protection
• Power conversion systems with strict electromagnetic interference requirements

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm the exact package variant and tape-and-reel or tube packaging configuration. Ensure the component meets AEC-Q100 qualification standards if required for your specific automotive application tier. Cross-reference the datasheet revision date to confirm compatibility with your design specifications.

Digital Isolators Selection Notes

Select this component when high isolation voltage and surge immunity are critical for automotive safety circuits. The unidirectional channel configuration suits applications where signal flow is strictly one-way. Consider the 16-SOIC footprint for PCB layout constraints and verify that the 150 Mb/s data rate aligns with system timing requirements.

Digital Isolators Part Context

This part belongs to the SI863x series of digital isolators, designed specifically for demanding environments. The series offers various channel counts and isolation ratings, with the SI8631BT-AS focusing on automotive-grade reliability. It complements other Skyworks isolation products by providing a balance of performance and ruggedness for vehicle networks.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility with existing designs before considering alternative sources.