SI8642ET-ASR

Digital Isolators Overview

The SI8642ET-ASR is an automotive-grade digital isolator from the Si864x series, manufactured by Skyworks Solutions. It features four channels with a unidirectional configuration, comprising two forward and two reverse paths. The device utilizes capacitive coupling technology to provide an insulation voltage of 5000 Vrms. It supports data rates up to 150 Mb/s with a propagation delay of 8 ns. Operating on a supply voltage between 2.375 V and 5.5 V, it draws 11 mA of working power current. The component is housed in a SOIC-16 package and is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• High isolation capability with 5000 Vrms insulation voltage
• Capacitive coupling technology for signal transmission
• Four-channel unidirectional digital isolation architecture

Digital Isolators Applications

• Automotive electronic control units (ECUs)
• Inverter gate drive circuits
• Industrial communication interfaces
• Power supply feedback loops

Digital Isolators Procurement Notes

Verify the specific suffix ASR indicates reel packaging when sourcing. Confirm AEC-Q100 certification status for automotive compliance requirements. Ensure the SOIC-16 footprint matches the target PCB design. Check for RoHS compliance documentation prior to integration into final assemblies.

Digital Isolators Selection Notes

Select this component for designs requiring high-speed digital isolation in automotive environments. The 150 Mb/s data rate suits high-frequency communication protocols. Consider the 11 mA power consumption against system energy budgets. The unidirectional channel layout dictates signal flow directionality in the circuit topology.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators. It shares the core capacitive isolation technology with other variants in the series but differs in channel count and packaging options. The ET suffix typically denotes specific temperature or performance grades within the Skyworks portfolio.

Digital Isolators Replacement Considerations

SI8642ET-IS2R is a related variant within the same product line offering similar isolation specifications.