SI8631BT-AS2

Digital Isolators Overview

The SI8631BT-AS2 is an automotive-grade, ultra-low power digital isolator from the Si863x series. It features three channels with a unidirectional configuration of two forward and one reverse channel. The device utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage and supports data rates up to 150 Mb/s. It operates within a supply voltage range of 2.5 V to 5.5 V, consuming 3.9 mA of operating current. Key electrical parameters include an 8 ns propagation delay, 4 ns rise and fall times, and a common-mode transient immunity of 10 kV/µs. It functions reliably between -40°C and +125°C in a 16-pin SOIC package.

Digital Isolators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust reliability in vehicle environments.
• High surge immunity capability rated at 10 kV, ensuring stability against high-voltage transients.
• Ultra-low power consumption design optimized for energy-efficient signal transmission.
• Capacitive coupling architecture providing galvanic isolation without magnetic interference.

Digital Isolators Applications

• Automotive electronic control units requiring isolated communication interfaces
• On-board charging systems for electric vehicles
• Industrial motor drives and inverters
• Power supply feedback loops in high-voltage environments

Digital Isolators Procurement Notes

Verify the specific suffix AS2 indicates the tube packaging format when sourcing components. Confirm that the part meets the required AEC-Q100 grade for your specific automotive application tier. Check for moisture sensitivity level requirements during storage and handling procedures. Ensure compatibility with your PCB footprint specifications for the 16-SOIC package. Validate supplier authenticity through authorized distribution channels to prevent counterfeit parts.

Digital Isolators Selection Notes

Select this component when designing systems requiring triple-channel isolation with unidirectional signal flow. It is suitable for applications needing high common-mode transient immunity alongside low power consumption. Consider this part if your design demands automotive reliability standards and operation across extended temperature ranges. Compare channel count and polarity requirements against alternative models in the Si863x family to ensure optimal fit.

Digital Isolators Part Context

This device belongs to the Si863x family of digital isolators manufactured by Skyworks Solutions. The family includes various configurations with different channel counts and isolation voltages. The SI8631BT-AS2 specifically targets automotive applications, distinguishing itself from general-purpose variants through its enhanced surge immunity and qualification status. It shares architectural similarities with other members but offers unique performance characteristics tailored for harsh electromagnetic environments.

Digital Isolators Replacement Considerations

SI8631BT-IS2 serves as a functional equivalent within the same product line. Both devices share identical channel configurations and core electrical specifications. Verify package compatibility and specific suffix requirements before substitution. Ensure that any replacement maintains the necessary automotive qualification standards for your application.