SI8642BD-ASR

Digital Isolators Overview

The SI8642BD-ASR is a four-channel digital isolator from the Si864x series, manufactured by Skyworks Solutions. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 5000 Vrms. The device supports data rates up to 150 Mb/s and operates within a supply voltage range of 2.375 V to 5.5 V. It features two forward and two reverse channels in an SOIC-16 package. Key electrical parameters include a propagation delay of 8 ns, rise/fall times of 4 ns, and a pulse width of 5 ns. It is AEC-Q100 qualified for automotive applications.

Digital Isolators Feature Summary

• Capacitive coupling isolation architecture
• AEC-Q100 automotive qualification
• Shutdown pin functionality

Digital Isolators Applications

• Automotive electronic control units
• Industrial communication interfaces
• Power conversion systems

Digital Isolators Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm packaging configuration and tape-and-reel specifications. Ensure the selected variant matches the required insulation voltage rating of 5000 Vrms for the intended safety isolation barrier. Cross-reference the SOIC-16 package dimensions with PCB footprint requirements prior to procurement.

Digital Isolators Selection Notes

Select this component when high-speed bidirectional data transmission requires robust galvanic isolation in automotive or industrial environments. The 5000 Vrms rating suits applications demanding enhanced safety standards. Consider the 150 Mbps speed and low propagation delay for timing-sensitive protocols. Verify power consumption constraints against the specified operating current.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which are designed for general-purpose isolation in noisy environments. The family offers various channel configurations and insulation ratings. The SI8642BD variant specifically provides four channels with bidirectional capability and high-voltage isolation, distinguishing it from lower-rated or unidirectional counterparts in the same series.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct replacements such as SI8642BB-B-IU or SI8642BD-B-ISR, ensuring identical insulation ratings and package types match the design requirements.