SI8661AB-AS1R

Digital Isolators Overview

The SI8661AB-AS1R is a six-channel digital isolator from the Si86xx series, manufactured by Skyworks Solutions Inc. It features five forward and one reverse channel with unidirectional signal transmission. The device utilizes capacitive coupling for isolation, providing an insulation voltage of 2500 Vrms. It supports data rates up to 1 Mb/s with a propagation delay of 35 ns. Operating on a supply voltage between 2.5 V and 5.5 V, it is housed in a 16-pin SOIC-Narrow package. The component is qualified under AEC-Q100 standards and operates within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Six-channel digital isolation with five forward and one reverse configuration
• Capacitive coupling technology for high-speed signal transmission
• AEC-Q100 automotive qualification for reliability
• Wide operating temperature range suitable for harsh environments

Digital Isolators Applications

• Automotive electronic control units
• Industrial communication interfaces
• General purpose isolated digital links

Digital Isolators Procurement Notes

Verify the specific suffix AS1R indicates tape and reel packaging when sourcing. Confirm the manufacturer is Skyworks Solutions Inc. Ensure the part matches the Si86xx series specifications. Check for AEC-Q100 certification if automotive use is required. Validate the 16-pin SOIC-Narrow package dimensions against design constraints.

Digital Isolators Selection Notes

Select this component for applications requiring low-speed, cost-effective isolation with automotive reliability. Compare against higher-speed variants like the SI8661EB-AU if data rates above 1 Mb/s are needed. Consider the 2500 Vrms isolation barrier sufficiency for the system's voltage requirements. Evaluate power consumption against other options in the Si86xx family.

Digital Isolators Part Context

This part belongs to the Si86xx family of digital isolators from Skyworks Solutions. These devices integrate capacitive sensing technology to provide robust isolation without magnetic components. The family offers various channel counts and speed grades, catering to diverse industrial and automotive interface needs.

Digital Isolators Replacement Considerations

SI8661AB-B-IS1 is a similar variant within the same series but may differ in packaging or specific electrical tolerances. Verify pin compatibility and isolation ratings before substitution.