SI88443ED-IS

Overview

The SI88443ED-IS is a Skyworks Solutions digital isolator featuring four unidirectional channels and an integrated DC-DC converter. It provides 5000 Vrms isolation voltage with capacitive coupling technology. The device supports data rates up to 100 Mb/s, with a propagation delay of 18 ns and rise/fall times of 2.5 ns. It operates within a supply voltage range of 3 V to 5.5 V and functions between -40°C and +125°C. Packaged in a 20-SOIC (7.50mm width), it offers 40 kV/µs common-mode transient immunity.

Feature Summary

• Integrates a high-efficiency isolated DC-DC converter for simplified power delivery across isolation barriers
• Utilizes silicon dioxide-based capacitive coupling for robust signal transmission and long-term reliability
• Features unidirectional channel configuration optimized for standard control and monitoring applications

Applications

• Industrial automation systems requiring galvanic isolation
• Power electronics interfaces such as motor drives and inverters
• Medical equipment needing reinforced safety isolation

Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm package dimensions and tape-and-reel specifications. Ensure the selected variant matches the required isolation voltage ratings and thermal performance for the target environment. Cross-reference the datasheet revision history to confirm component availability status and recommended design-in guidelines before finalizing procurement plans.

Selection Notes

Select this component when a single-channel DC-DC converter is needed alongside four isolated logic channels. Compare the 20-SOIC footprint requirements against available PCB space. Evaluate the 100 Mb/s data rate capability against system timing constraints. Confirm that the 5000 Vrms isolation rating meets the specific safety standards required for the application's regulatory compliance needs.

Part Context

This part belongs to the Si884xx family of digital isolators from Skyworks Solutions. The series is designed to replace traditional optocouplers by offering higher speed, lower power consumption, and better consistency. The ED-IS designation indicates a wide-body SOIC package with an integrated isolated power supply, distinguishing it from non-isolated variants.

Replacement Considerations

Consult the official Skyworks replacement guide for direct pin-compatible alternatives. Verify that any substitute maintains the 5000 Vrms isolation rating and integrated DC-DC functionality. Check for updates in the Si884xx product line regarding end-of-life notifications or recommended new designs.