SI88240ED-IS

Overview

The SI88240ED-IS is a high-speed digital isolator featuring four independent channels and an integrated DC-DC converter, manufactured by Skyworks Solutions Inc. It provides a 5000 Vrms isolation voltage with unidirectional signal transmission at data rates up to 100 Mb/s. The device operates on a supply voltage range of 3 V to 5.5 V and exhibits a propagation delay of 18 ns. Packaged in a SOIC-Wide-20 surface-mount format, it supports capacitive coupling for robust noise immunity.

Feature Summary

• Integrates a fully-featured secondary sensing feedback-controlled DC-DC converter
• Provides high common-mode transient immunity for reliable signal integrity
• Delivers high-speed data transmission across isolated boundaries

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-voltage safety compliance
• Power electronics control circuits with integrated power solutions

Procurement Notes

Verify the specific suffix 'ED' against official Skyworks documentation to confirm package dimensions and thermal characteristics. Confirm RoHS compliance status through current datasheets. Check for obsolescence notices as some variants may be restricted from new designs. Ensure the integrated DC-DC converter meets your system's power requirements before procurement.

Selection Notes

Select this component when a single-chip solution combining isolation and power conversion is required. The 4-channel configuration suits parallel data bus applications. Verify that the 5000 Vrms rating aligns with safety standards. Consider the SOIC-Wide-20 footprint for PCB layout compatibility. Evaluate the 100 Mb/s speed against system timing constraints.

Part Context

This part belongs to the SI8824x series of digital isolators with integrated converters. It replaces older discrete isolation and power supply combinations. The ED suffix typically denotes specific packaging or temperature grade variations within the family. It serves as a compact alternative to multi-component isolation architectures.

Replacement Considerations

Direct substitutes include SI88240BC-IS for lower isolation ratings. SI88440EC-IS offers similar functionality with AEC-Q100 automotive qualification. Cross-reference pinouts and electrical parameters carefully before substitution.