SI8642ED-AS2

Digital Isolators Overview

The SI8642ED-AS2 is an automotive-grade digital isolator from the Si864x series, manufactured by Skyworks Solutions. It features four unidirectional channels with a capacitive coupling isolation type and a 5000 Vrms insulation voltage. The device supports data rates up to 150 Mb/s with a propagation delay of 8 ns. It operates on a supply voltage between 2.375 V and 5.5 V, drawing 4.4 mA of operating current. Key timing parameters include 4 ns rise/fall times and 5 ns pulse width. It is qualified under AEC-Q100 standards and functions within a temperature range of -40°C to +125°C in a SOIC-16 package.

Digital Isolators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• High-voltage isolation capability of 5000 Vrms using capacitive coupling technology
• Ultra-low power consumption design suitable for energy-efficient applications
• Four-channel unidirectional configuration with high-speed signal transmission

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces demanding high noise immunity
• Power conversion systems needing reliable signal transfer across potential differences
• Medical equipment requiring strict safety isolation standards

Digital Isolators Procurement Notes

Verify the specific suffix AS2 against official Skyworks documentation to confirm pinout and packaging details. Ensure the component meets AEC-Q100 requirements for your target application environment. Cross-reference the SOIC-16 footprint dimensions with your PCB layout tools. Confirm that the 5000 Vrms isolation rating aligns with your system's safety regulations. Validate the operating temperature range suitability for your specific deployment conditions.

Digital Isolators Selection Notes

Select this component when automotive certification and high isolation voltage are critical. The 150 Mb/s data rate supports fast communication protocols. Consider the 4.4 mA current draw for power budget calculations. The unidirectional nature limits use cases to single-direction signal flow. Compare with other Si864x variants if bidirectional isolation or different channel counts are needed. Ensure the SOIC-16 package fits your assembly constraints.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which utilizes Skyworks' proprietary capacitive isolation technology. The family offers various channel configurations and isolation ratings. The SI8642ED-AS2 specifically targets automotive applications due to its AEC-Q100 qualification. It provides a robust solution for noise-sensitive environments where electrical isolation is mandatory for safety and performance.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-to-pin replacements within the Si864x series. Verify if alternative suffixes offer identical electrical characteristics. Ensure any substitute maintains AEC-Q100 compliance if automotive use is required. Confirm package compatibility before substitution.