SI8631ET-AS2

Digital Isolators Overview

The SI8631ET-AS2 is a unidirectional digital isolator from the si863x series, manufactured by Skyworks Solutions. It features three channels with two forward and one reverse path, utilizing capacitive coupling for isolation. The device supports a data rate of 150 Mb/s and offers an insulation voltage of 5000 Vrms. It operates within a supply voltage range of 2.5 V to 5.5 V, consuming 3.9 mA of power. Key timing parameters include an 8 ns propagation delay, 4 ns rise/fall times, and 5 ns pulse width capability. It functions between -40°C and +125°C in an SOIC-16 package.

Digital Isolators Feature Summary

• Provides high-voltage galvanic isolation via capacitive coupling technology
• Supports automotive applications with 10 kV surge immunity rating
• Enables high-speed signal transmission at 150 Mb/s data rates
• Operates reliably across extended industrial temperature ranges

Digital Isolators Applications

• Automotive electronic control units requiring robust isolation
• Industrial communication interfaces demanding high common-mode transient immunity
• Power conversion systems needing reliable signal transfer across potential differences
• Motor drive circuits requiring isolated gate or sensor feedback signals

Digital Isolators Procurement Notes

Verify the specific suffix AS2 corresponds to the tube packaging format when ordering. Confirm that the 10 kV surge rating aligns with your system's transient requirements. Ensure the SOIC-16 footprint matches your PCB layout constraints. Check for AEC-Q100 qualification status if automotive compliance is mandatory for your production line.

Digital Isolators Selection Notes

Choose this component when unidirectional signal isolation is required alongside high surge tolerance. The 150 Mb/s speed suits fast digital protocols unlike slower isolators. Consider the 5000 Vrms insulation level against lower-rated alternatives. The ultra-low power consumption benefits battery-operated or thermally constrained designs compared to higher current options.

Digital Isolators Part Context

This part belongs to the si863x family of digital isolators, which are designed for general-purpose and automotive use. The series includes variants with different channel counts and insulation ratings. The SI8631ET-AS2 specifically targets applications needing three-channel unidirectional isolation with enhanced surge protection capabilities within a standard surface-mount package.

Digital Isolators Replacement Considerations

SI8631ED-AS: Similar 3-channel isolator but lacks the explicit 10 kV surge rating documentation found in the ET variant.