SI8645ET-ASR

Digital Isolators Overview

The SI8645ET-ASR is an automotive-grade digital isolator from the Si864x series, manufactured by Skyworks Solutions. It features four unidirectional channels with capacitive coupling technology, providing 5000 Vrms isolation voltage and a common-mode transient immunity of 35 kV/µs. The device supports data rates up to 150 Mb/s with a propagation delay of 8 ns and rise/fall times of 4 ns. It operates on a supply voltage range of 2.5 V to 5.5 V, drawing 6.1 mA per channel. Packaged in a 16-pin SOIC (7.50 mm width) reel, it functions within a temperature range of -40°C to +125°C and holds AEC-Q100 qualification.

Digital Isolators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for harsh environments
• High-speed signal transmission with 150 Mbps data rate and low latency
• Robust insulation performance with 5000 Vrms isolation and high CMTI
• Ultra-low power consumption design suitable for energy-efficient systems

Digital Isolators Applications

• Automotive battery management systems
• Electric vehicle motor control drives
• Charging station communication interfaces
• Inverter gate driver isolation

Digital Isolators Procurement Notes

Verify the specific suffix ASR indicates reel packaging when sourcing components. Confirm that the part number matches the exact electrical specifications required for the target application. Ensure compliance with automotive quality standards during procurement. Check for moisture sensitivity levels prior to assembly processing. Validate supplier authenticity to guarantee component integrity.

Digital Isolators Selection Notes

Choose this component for applications requiring high isolation voltage and fast switching speeds. Consider the 16-pin SOIC package for surface mount compatibility. Evaluate power constraints as the device draws current proportional to channel usage. Ensure the operating temperature range meets environmental requirements. Verify signal directionality needs as the device is unidirectional only.

Digital Isolators Part Context

This device belongs to the Si864x family of digital isolators designed for high-performance isolation applications. It utilizes Skyworks' proprietary capacitive coupling technology to provide reliable signal transmission across isolation barriers. The family offers various channel configurations and voltage ratings to suit diverse interface requirements.

Digital Isolators Replacement Considerations

SI8645ET-IS serves as a non-reel variant of the same electrical specification.