SI88644ED-ASR

Overview

The SI88644ED-ASR is a general-purpose digital isolator from Skyworks Solutions, housed in a 24-SOIC package. It features four unidirectional channels with a data rate of 100 Mb/s and an insulation voltage of 5000 Vrms. The device operates on a supply voltage between 3 V and 5.5 V, drawing 11 mA of operating current. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and a common-mode transient immunity of 40 kV/µs. It supports a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates a fully-integrated secondary sensing feedback-controlled dc-dc converter for isolated power delivery
• Provides high-speed signal isolation with 40 kV/µs common-mode transient immunity
• Features unidirectional channel configuration for general-purpose digital isolation

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 the specific suffix 'ASR' to confirm the reel packaging and integrated DC-DC converter variant. Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure design compatibility with the 24-SOIC footprint and thermal requirements for the specified operating temperature range.

Selection Notes

Select this component when bidirectional isolation is not required and an integrated isolated power source is beneficial. Compare against the non-converter variants if external power management is preferred. Verify that the 100 Mb/s data rate meets system timing constraints and that the 5000 Vrms insulation rating satisfies safety standards.

Part Context

This part belongs to the Si886xx series of digital isolators from Skyworks Solutions. The series is designed for applications demanding high reliability and noise immunity. The ED-ASR designation indicates a specific package and feature set within this broader family of interface ICs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.