SI8641BA-AUR

Digital Isolators Overview

The SI8641BA-AUR is a low-power, quad-channel digital isolator from the Si864x series by Skyworks Solutions. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 1000 Vrms. The device supports a data rate of 150 Mb/s and features a propagation delay of 8 ns. It operates within a supply voltage range of 2.375 V to 5.5 V and includes three forward channels and one reverse channel. The component is qualified under AEC-Q100 standards for automotive applications and functions reliably across an operating temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Capacitive coupling architecture ensures robust signal transmission across isolation barriers
• AEC-Q100 qualification confirms suitability for demanding automotive electronic environments
• Ultra-low power consumption design minimizes energy usage in isolated circuits

Digital Isolators Applications

• Automotive battery management systems
• Inverter control interfaces
• Motor drive gate drivers
• Industrial communication bus isolation

Digital Isolators Procurement Notes

Verify that the ordering suffix matches the required package configuration and tape-and-reel quantity specifications. Confirm that the specific variant aligns with the intended application's voltage and thermal requirements. Ensure compliance with RoHS directives and check for any recent product change notices affecting manufacturing or sourcing. Cross-reference the manufacturer part number with distributor listings to confirm authenticity and availability status before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when high-speed data isolation is required alongside automotive reliability standards. The unidirectional channel configuration suits applications needing asymmetric signal flow. Consider the 1000 Vrms isolation rating against system voltage levels. Evaluate the 150 Mb/s data rate capability against interface speed requirements. The wide operating temperature range supports deployment in harsh environmental conditions without derating concerns.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which are designed for general-purpose isolation tasks. The family shares common technological foundations but varies in channel count, isolation voltage, and packaging options. The SI8641BA-AUR specifically addresses the need for four-channel isolation in compact surface-mount packages. It complements other variants like the SI8640 and SI8641 series members offering different channel configurations.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers include ISO7141FCCDBQ from Texas Instruments.