SI8645ET-AS2

Digital Isolators Overview

The SI8645ET-AS2 is an automotive-grade digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It features four unidirectional channels with a 5000 Vrms isolation voltage and capacitive coupling technology. The device supports data rates up to 150 Mb/s with a propagation delay of 8 ns. Operating on a supply voltage between 2.5 V and 5.5 V, it draws 6.1 mA of power current. It is housed in a 16-pin SOIC package and certified under AEC-Q100 for temperatures ranging from -40°C to +125°C.

Digital Isolators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• High common-mode transient immunity via capacitive coupling
• Ultra-low power consumption design
• Unidirectional signal transmission capability

Digital Isolators Applications

• Automotive electronic control units
• Inverter gate drive circuits
• Industrial communication interfaces
• Power metering systems

Digital Isolators Procurement Notes

Verify the specific suffix AS2 corresponds to the required tube packaging configuration. Confirm that the SOIC-16 footprint matches the target PCB layout. Ensure the 5 kV isolation rating meets system safety requirements. Check for RoHS compliance status before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when high isolation voltage and automotive reliability are required. Compare channel count against other Si864x variants if bidirectional support is needed. Verify thermal performance within the specified operating temperature range. Consider the 150 Mb/s speed limit for high-frequency applications.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators. It shares core architectural similarities with other models in the series but differs in insulation voltage and packaging options. The ET-AS2 variant specifically targets automotive applications requiring robust noise immunity and long-term stability.

Digital Isolators Replacement Considerations

SI8645BB-B-IS1 offers similar functionality with 2.5 kV isolation. SI8645BD-B-IS provides 5 kV isolation in a wide SOIC package. Verify pin compatibility and insulation ratings when substituting.