SI88641ED-ISR

Overview

The SI88641ED-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels with an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V and provides 3750 Vrms isolation. The device supports data rates up to 100 Mb/s with a propagation delay of 18 ns. It utilizes capacitive coupling technology and is housed in a SOIC-Wide-20 package, suitable for industrial applications requiring high-speed signal transmission across isolated boundaries.

Feature Summary

• Integrates a high-efficiency DC-DC converter to power the isolated side without external components
• Provides robust galvanic isolation via capacitive coupling technology
• Supports high-speed data transmission with low propagation delay

Applications

• Industrial automation systems
• Power supply control circuits
• Medical equipment isolation interfaces

Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status through current datasheets. Check for lifecycle status updates as component availability may vary. Ensure thermal management requirements align with the SOIC-Wide-20 package specifications during integration.

Selection Notes

Select this component when bidirectional isolation is not required and an integrated power source for the isolated domain is needed. Compare channel count and isolation voltage ratings against system requirements. Evaluate the trade-off between the integrated DC-DC converter complexity and external power supply options. Verify compatibility with existing logic levels and operating temperature ranges.

Part Context

This part belongs to the Si8864x series of digital isolators from Skyworks Solutions. It is designed for applications requiring reliable signal isolation combined with convenient power delivery across the isolation barrier. The series typically targets industrial and communication interfaces where space savings and reduced component count are critical design factors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided reference material.