SI8641BB-B-IS

Digital Isolators Overview

The SI8641BB-B-IS is a general-purpose digital isolator from the Si864x series, manufactured by Skyworks Solutions. It features four unidirectional channels utilizing capacitive coupling technology for signal transmission across isolation barriers. The device supports data rates up to 150 Mb/s with a typical propagation delay of 8 ns and rise/fall times of 4 ns. It operates within a supply voltage range of 2.375 V to 5.5 V and provides an insulation voltage of 2500 Vrms. The component is housed in a 16-SOIC-Wide package and is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Four-channel unidirectional digital isolation using capacitive coupling
• High-speed data transmission capability up to 150 Mb/s
• AEC-Q100 qualified for automotive reliability requirements
• Integrated shutdown functionality for power management

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces such as CAN and LIN bus systems
• General-purpose isolated digital signal transmission in harsh environments

Digital Isolators Procurement Notes

Verify that the specific suffix 'B' corresponds to the SOIC-Wide-16 package variant rather than the narrow version. Confirm AEC-Q100 qualification status if automotive compliance is required. Ensure compatibility with the si86xxiso-kit development resources for design validation. Check moisture sensitivity level handling procedures during assembly.

Digital Isolators Selection Notes

Select this part when four unidirectional channels are needed with high common-mode transient immunity. Compare against SI8641BC-B-IS1 if higher insulation voltage (3750 Vrms) is required. Consider SI8641BD-B-IS for 5 kV isolation needs. Verify that the wide SOIC package fits the PCB footprint constraints compared to narrow variants.

Digital Isolators Part Context

This component belongs to the Si864x family of digital isolators, which offers various channel configurations and isolation voltages. The SI8641BB-B-IS specifically addresses applications needing four unidirectional paths with standard 2.5 kVrms isolation. It complements other family members like the SI8641BC-B-IS1 and SI8641BD-B-IS by providing a cost-effective solution for automotive and industrial markets.

Digital Isolators Replacement Considerations

SI8641BC-B-IS1 offers higher insulation voltage (3750 Vrms). SI8641BD-B-IS provides 5000 Vrms isolation. SI8641BB-B-IS1R is the reel-packaged version of the same electrical specification.