SI8642ED-AS2R

Digital Isolators Overview

The SI8642ED-AS2R is an automotive-grade digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. 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. Operating on a supply voltage between 2.375 V and 5.5 V, it draws 4.4 mA of quiescent current. It is housed in a SOIC-Wide-16 package, rated for temperatures from -40°C to +125°C, and holds AEC-Q100 qualification.

Digital Isolators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• High-voltage isolation capability of 5000 Vrms via capacitive coupling
• Ultra-low power consumption with 4.4 mA typical operating current
• High-speed data transmission supporting 150 Mb/s signaling

Digital Isolators Applications

• Automotive electronic control units (ECUs)
• Inverter gate drive circuits
• Industrial communication interfaces
• Power conversion systems

Digital Isolators Procurement Notes

Verify the specific suffix AS2R indicates reel packaging when sourcing components. Confirm that the part meets AEC-Q100 requirements for your specific automotive application tier. Ensure compatibility with SOIC-Wide-16 footprints during PCB layout. Check manufacturer datasheets for moisture sensitivity levels and reflow soldering profiles to prevent damage during assembly processes.

Digital Isolators Selection Notes

Select this component for designs requiring robust galvanic isolation in high-noise automotive environments. The unidirectional channel configuration suits applications where signal flow is strictly one-way. Consider the 150 Mb/s speed limit against system timing requirements. The wide operating temperature range ensures functionality in harsh thermal conditions without derating.

Digital Isolators Part Context

This device belongs to the Si864x family of digital isolators, which utilizes Skyworks' proprietary iCoupler technology. The family provides high-performance isolation solutions for industrial and automotive markets. The SI8642 variant specifically offers four channels, balancing channel count with low power consumption and small form factor constraints.

Digital Isolators Replacement Considerations

SI8642ED-AS2 is the tube-packaged equivalent of this reel-part. Other variants in the Si864x series may offer different channel counts or voltage ratings but share similar electrical characteristics.