SI8645BC-B-IS1R

Digital Isolators Overview

The SI8645BC-B-IS1R is a four-channel digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 3750 Vrms. The device supports a maximum data rate of 150 Mb/s and features a typical propagation delay of 8 ns. It operates within a supply voltage range of 2.375 V to 5.5 V and is available in a 16-lead SOIC-Narrow package. The component is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Provides high-speed signal transmission with a data rate up to 150 Mb/s
• Offers robust galvanic isolation via capacitive coupling technology
• Meets automotive reliability requirements through AEC-Q100 qualification

Digital Isolators Applications

• Automotive electronic control units requiring isolated communication
• Industrial automation systems with high-voltage noise environments
• Medical equipment needing patient isolation protection

Digital Isolators Procurement Notes

Verify that the specific part number matches the required insulation voltage and package width specifications. Confirm AEC-Q100 qualification status if the application demands automotive-grade reliability. Ensure compatibility with the intended operating temperature range and supply voltage levels before integration into the design.

Digital Isolators Selection Notes

Select this component when four independent unidirectional channels are required within a single package. Consider the 3750 Vrms isolation rating for applications demanding higher safety margins than standard 2500 Vrms devices. Evaluate the 150 Mb/s data rate capability against system timing requirements to ensure signal integrity across the isolation barrier.

Digital Isolators Part Context

This device belongs to the Si864x family of digital isolators, which are designed for general-purpose applications. The family offers various channel counts and isolation ratings, allowing designers to scale solutions based on complexity. The SI8645 variant specifically provides four channels, making it suitable for parallel data bus isolation or multi-signal control interfaces.

Digital Isolators Replacement Considerations

SI8645BD-B-IS: Offers higher 5000 Vrms isolation but uses a wide SOIC package instead of narrow SOIC.