SI88421BC-AS

Digital Isolators Overview

The SI88421BC-AS is a dual-channel digital isolator from Skyworks Solutions, featuring integrated DC-DC converters. It operates with a data rate of 100 Mb/s and provides 5000 Vrms isolation voltage. The device supports supply voltages between 3 V and 5.5 V, with a maximum operating current of 8 mA. Key electrical parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 4.5 ns pulse width distortion. It functions within a temperature range of -40°C to +125°C and is housed in a SOIC-16 package.

Digital Isolators Feature Summary

• Integrates high-voltage DC-DC converters for independent channel power supplies
• Provides robust galvanic isolation via capacitive coupling technology
• Supports unidirectional signal transmission across two isolated channels

Digital Isolators Applications

• Industrial automation systems requiring isolated communication
• Medical equipment needing high-voltage safety isolation
• Power electronics monitoring circuits

Digital Isolators Procurement Notes

Verify the specific suffix (AS) against official Skyworks documentation to confirm pinout and packaging details. Ensure compatibility with system voltage requirements and thermal management needs. Confirm availability status as distribution may vary by region. Cross-reference datasheet revisions for any updates to electrical characteristics or mechanical dimensions before finalizing procurement.

Digital Isolators Selection Notes

Select this component when high-speed digital isolation with integrated power conversion is required. The 100 Mb/s data rate suits moderate-speed industrial protocols. Verify that the SOIC-16 footprint fits the PCB layout constraints. Consider the 5000 Vrms isolation rating for applications demanding strict safety compliance. Evaluate thermal performance given the integrated DC-DC converter operation.

Digital Isolators Part Context

This part belongs to the Si88421 series of digital isolators. It is designed for applications requiring reliable signal transmission across isolated boundaries. The integration of DC-DC converters simplifies system design by eliminating external power components for the isolated side. It complements other Skyworks interface solutions for comprehensive system isolation strategies.

Digital Isolators Replacement Considerations

Check Skyworks official substitution guides for compatible alternatives. Verify pin-to-pin compatibility if direct replacement is needed. Ensure equivalent isolation voltage and data rate specifications are met by potential substitutes.