SI88641BC-IS

Overview

The SI88641BC-IS is a general-purpose digital isolator from Skyworks Solutions, featuring four channels in a 24-SOIC package. It provides unidirectional signal isolation with a data rate of 100 Mb/s and an insulation voltage of 5000 Vrms. The device operates within a supply voltage range of 3 V to 5.5 V and supports a propagation delay of 18 ns. It exhibits high common-mode transient immunity of 40 kV/µs and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Capacitive coupling technology for robust signal transmission
• Integrated high-voltage isolation barrier
• High common-mode transient immunity performance

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive interfaces

Procurement Notes

Verify the specific suffix 'IS' corresponds to the required 24-SOIC package and lead-free compliance. Confirm that the 5000 Vrms insulation rating meets your safety standards. Ensure the unidirectional channel configuration aligns with your circuit design requirements before finalizing procurement.

Selection Notes

Select this component when high isolation voltage and moderate data rates are required. The 24-SOIC package offers ample spacing for high-voltage applications. Consider the 100 Mb/s speed limit and unidirectional nature against bidirectional or higher-speed alternatives if system demands exceed these specifications.

Part Context

This part belongs to the Si8864x family of digital isolators. It utilizes Skyworks' capacitive isolation technology, which provides superior reliability compared to optical isolators. The family is designed for demanding industrial and automotive environments requiring long-term stability and high noise immunity.

Replacement Considerations

Check for SI88641BC-AS as a potential alternative, noting differences in packaging or qualification status. Verify pin compatibility and electrical parameters against other Si8864x variants to ensure functional equivalence without redesigning the PCB layout.