SI88443ED-AS

Overview

The SI88443ED-AS is a Skyworks Solutions digital isolator featuring four channels with unidirectional signal flow. It integrates a secondary sensing feedback-controlled DC-DC converter, eliminating the need for external components. The device operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. Key electrical specifications include an insulation voltage of 5000 Vrms, a propagation delay of 18 ns, and rise/fall times of 2.5 ns. It functions reliably across an industrial temperature range from -40°C to +125°C.

Feature Summary

• Integrates a fully-featured secondary sensing feedback-controlled DC-DC converter for isolated power generation
• Provides high-speed isolation with 100 Mb/s data rate capability
• Features unidirectional channel configuration for simplified interface design

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal transmission across isolation barriers
• Power electronics interfaces utilizing integrated isolated power supplies

Procurement Notes

Verify component authenticity through authorized Skyworks distributors or official Mouser listings. Confirm package type matches SOIC-20 specifications. Check RoHS compliance documentation for environmental standards. Ensure storage conditions account for moisture sensitivity classification prior to soldering. Validate part number suffix against current datasheet revisions to avoid obsolete variants.

Selection Notes

Select this component when an integrated isolated power solution is required alongside signal isolation. The built-in DC-DC converter reduces bill-of-materials count compared to discrete solutions. Consider the 18 ns propagation delay for timing-critical applications. Verify that the unidirectional architecture aligns with system signal flow requirements. Evaluate thermal performance within the specified operating temperature range.

Part Context

This device belongs to the Si8844x family of high-speed digital isolators. It shares architectural similarities with other members like the SI88443ED-ISR but differs in packaging and shipping format. The series emphasizes compact integration of isolation and power conversion technologies for space-constrained designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks technical support for qualified alternatives if this specific variant is unavailable.