SI8642BC-B-IS1R

Digital Isolators Overview

The SI8642BC-B-IS1R is a Skyworks Solutions Inc. digital isolator featuring four channels with a 3.75 kVrms isolation voltage and 150 Mbps data rate. It utilizes capacitive coupling technology in a 16-SOIC package. The device supports bidirectional signal transmission with two forward and two reverse channels. Operating parameters include a supply voltage range of 2.375 V to 5.5 V, propagation delay of 8 ns, and rise/fall times of 4 ns. It functions within a temperature range of -40°C to +125°C and consumes 275 mW power.

Digital Isolators Feature Summary

• Provides high-speed digital isolation with 150 Mbps data throughput for general-purpose applications.
• Features bidirectional channel configuration allowing flexible signal routing between isolated domains.
• Delivers robust noise immunity through capacitive coupling technology with high common-mode transient rejection.

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment signal interfacing
• Power electronics control circuits

Digital Isolators Procurement Notes

Verify the specific suffix IS1R indicates reel packaging when ordering. Confirm the 3.75 kVrms insulation rating matches system safety requirements. Check AEC-Q100 qualification status if automotive compliance is mandatory. Ensure the 16-SOIC narrow footprint fits the target PCB layout constraints.

Digital Isolators Selection Notes

Select this component for designs needing bidirectional isolation at 150 Mbps. Compare against unidirectional variants like SI8640 if directionality differs. Consider the 3.75 kVrms rating versus lower voltage options for enhanced safety margins. Verify thermal dissipation capabilities given the 275 mW power consumption in enclosed environments.

Digital Isolators Part Context

Part of the Si864x family of digital isolators from Skyworks Solutions. This series emphasizes low power consumption and high reliability using proprietary capacitive isolation technology. The SI8642 variant specifically addresses bidirectional communication needs within industrial and medical sectors.

Digital Isolators Replacement Considerations

SI8642AB-B-IS1R offers similar functionality but with a lower 2.5 kVrms isolation rating and 1 Mbps data rate. SI8642BB-B-IS1R provides unidirectional channels instead of bidirectional ones. Verify pinout compatibility and insulation voltage requirements before substitution.