SI8651BB-B-IUR

Digital Isolators Overview

The SI8651BB-B-IUR is a five-channel digital isolator from the Si865x series, manufactured by Skyworks Solutions Inc. It features four forward and one reverse unidirectional channel configuration within a 16-lead SSOP package. The device utilizes capacitive coupling technology to provide an insulation voltage of 2500 Vrms. It supports data rates up to 150 Mb/s with a typical propagation delay of 8 ns. Operating on a supply voltage range of 2.375 V to 5.5 V, it includes a shutdown function and meets AEC-Q100 automotive qualification standards.

Digital Isolators Feature Summary

• Provides galvanic isolation via capacitive coupling technology for robust signal transmission across isolation barriers.
• Integrates a dedicated shutdown pin to minimize power consumption during inactive periods.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.
• Configured with four forward and one reverse channel to support complex bidirectional communication protocols.

Digital Isolators Applications

• Automotive electronic control units requiring AEC-Q100 qualified components
• Industrial motor drives and inverters
• Power supply feedback loops
• General-purpose isolated digital interfaces

Digital Isolators Procurement Notes

Verify the specific suffix IUR confirms the tape-and-reel packaging format rather than tube or cut tape. Confirm the QSOP-16 package variant matches the target PCB footprint. Ensure the 2500 Vrms isolation rating aligns with system safety requirements. Validate that the unidirectional channel configuration suits the intended signal flow direction.

Digital Isolators Selection Notes

Select this component when a five-channel isolator with mixed forward/reverse directionality is required. The SSOP-16 package offers a compact solution for space-constrained designs. Consider the 150 Mb/s data rate limit for high-speed applications. The AEC-Q100 certification makes it suitable for automotive environments where reliability is critical.

Digital Isolators Part Context

This part belongs to the Si865x family of low-power digital isolators. It shares core architectural similarities with other members like the SI8650 and SI8652 but differs in channel count and directionality. The family is characterized by its use of silicon dioxide isolation barriers and CMOS process technology.

Digital Isolators Replacement Considerations

Direct substitutes include SI8651BB-B-IS1R for tube packaging or SI8651BB-B-IU for QSOP-16 tube variants. Cross-reference with SI8650BB-B-IUR if reverse channels are not needed. Verify package dimensions and pinout compatibility before substitution.