SI88644EC-ASR

Overview

The SI88644EC-ASR is a unidirectional digital isolator from the Si88644 series, manufactured by Skyworks Solutions. It features four reverse channels and zero forward channels within a 24-pin SOIC package. The device supports data rates up to 100 Mb/s with an insulation voltage of 5000 Vrms. Operating supply voltage ranges from 3 V to 5.5 V. Propagation delay is 18 ns, with rise and fall times of 25 ns. Pulse width distortion is 4.5 ns. It operates between -40°C and +125°C.

Feature Summary

• Provides galvanic isolation for high-speed digital signals in unidirectional configurations
• Offers robust common-mode transient immunity for noise-sensitive environments
• Supports wide operating temperature ranges for industrial applications

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive interfaces

Procurement Notes

Verify the specific suffix 'ASR' indicates reel packaging versus tube variants like 'AS'. Confirm RoHS compliance status through official datasheets. Check current availability as supply may be restricted. Ensure pinout compatibility with existing PCB layouts before ordering.

Selection Notes

Select this component when unidirectional isolation is required for four channels. Compare against SI88644EC-AS if tube packaging is preferred over reels. Consider CMTI ratings for high-noise environments. Verify voltage levels match system requirements.

Part Context

Part of the Si88644 family of digital isolators. Shares core electrical specifications with other variants in the series. Differentiated primarily by packaging type and channel configuration directionality.

Replacement Considerations

SI88644EC-AS serves as a direct alternative with identical electrical characteristics but differs in packaging format.