SI86S661BB-AUR

Digital Isolators Overview

The SI86S661BB-AUR is a six-channel SPI digital isolator from Skyworks Solutions, utilizing capacitive coupling technology for galvanic isolation. It supports data rates up to 150 Mbps with a maximum propagation delay of 42 ns and typical rise/fall times of 2.5 ns. The device offers 2500 Vrms isolation voltage and a common-mode transient immunity of 150 kV/µs. Operating on a supply voltage range of 2.25 V to 5.5 V, it features five unidirectional input-to-output channels and one reverse channel. Packaged in a 16-SSOP (QSOP) format, it is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Provides high-speed digital isolation via capacitive coupling technology
• Features integrated isolated power supply capability within the architecture
• Delivers robust signal integrity with high common-mode transient immunity
• Complies with automotive reliability standards for harsh environment operation

Digital Isolators Applications

• Galvanic isolation between microcontrollers and peripheral devices in automotive systems
• Isolation barriers in automotive gateways and domain controllers
• Signal transmission across isolation boundaries in electric vehicle powertrains
• Communication interfaces in automotive sensor modules requiring high noise immunity

Digital Isolators Procurement Notes

Verify that the suffix 'AUR' corresponds to the tape-and-reel packaging configuration rather than tube packaging when sourcing components. Confirm that the specific variant matches the required channel directionality and isolation voltage ratings for the target application. Ensure compliance with RoHS3 specifications and check for any recent product change notifications affecting manufacturing sites or materials before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when designing automotive circuits requiring six isolated channels with integrated power supply capabilities. The choice is appropriate for applications demanding high common-mode transient immunity and fast propagation delays. Consider the 16-pin SSOP package constraints and the specific voltage supply range requirements. Evaluate the thermal performance characteristics against the system's operating temperature limits to ensure reliable long-term operation.

Digital Isolators Part Context

This part belongs to the Si86S6x series of automotive-grade digital isolators. The series utilizes Skyworks' proprietary capacitive coupling technology to provide reliable isolation without magnetic cores. The SI86S661 variant specifically addresses the need for multi-channel isolation with integrated power management features, distinguishing it from standard isolator families that require external isolated power supplies.

Digital Isolators Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include SI86S661BB-AU, SI86S661EB-AU, and SI86S661EB-AUR. Verify pinout compatibility and electrical specifications before substitution. Note that the 'AU' suffix indicates tube packaging, while 'AUR' indicates reel packaging; functional equivalence remains consistent across these packaging variants.