SI88642BC-IS

Overview

The SI88642BC-IS is a unidirectional digital isolator from Skyworks Solutions, featuring four independent channels in a 24-pin SOIC package. It supports data rates up to 100 Mb/s with a propagation delay of 18 ns and rise/fall times of 25 ns. The device operates on a supply voltage range of 3 V to 5.5 V and provides an insulation voltage of 5000 Vrms. It functions within a temperature range of -40°C to +125°C and lacks a shutdown pin.

Feature Summary

• Provides galvanic isolation for four signal paths using capacitive coupling technology.
• Supports high-speed data transmission at rates up to 100 Mb/s.
• Operates reliably across an extended industrial temperature range.

Applications

• Industrial automation control systems
• Power electronics interface circuits
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix IS against official Skyworks documentation to confirm the reel packaging format and moisture sensitivity level. Ensure the selected variant matches the required insulation voltage rating of 5000 Vrms for your application safety standards. Cross-reference the 24-SOIC footprint dimensions with your PCB design guidelines before finalizing the procurement order.

Selection Notes

Select this component when four isolated bidirectional or unidirectional channels are required without integrated power conversion. Compare the 5000 Vrms isolation rating against lower-rated alternatives if higher safety margins are needed. Consider the 25 ns transition times for timing-critical applications where faster switching is not mandatory.

Part Context

This part belongs to the Si88642 family of digital isolators designed for robust noise immunity. It utilizes Skyworks' proprietary iCoupler technology to provide reliable signal transmission across isolation barriers. The family offers various channel counts and packaging options to suit different interface requirements.

Replacement Considerations

Check the SI88642BC-ASR for similar specifications but verify differences in packaging and availability. The SI88642EC-AS includes an integrated DC-DC converter, which changes the power architecture significantly. Confirm pin compatibility and isolation ratings before substituting.