SI88641EC-ASR

Overview

The SI88641EC-ASR is a general-purpose digital isolator from Skyworks Solutions, housed in a 24-SOIC package. It features four channels with unidirectional polarity and supports data rates up to 100 Mb/s. The device provides an isolation voltage of 5000 Vrms and exhibits a common-mode transient immunity of 40 kV/µs. Operating parameters include a supply voltage range of 3 V to 5.5 V, propagation delay of 18 ns, and rise/fall times of 2.5 ns. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation for digital signal transmission between circuits.
• Features high common-mode transient immunity to maintain signal integrity in noisy environments.
• Supports unidirectional data flow across multiple isolated channels.

Applications

• Industrial automation systems requiring signal isolation
• Medical equipment needing patient safety isolation
• Power electronics control interfaces

Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and moisture sensitivity classification. Ensure the 24-SOIC footprint matches the target PCB design. Confirm that the 5000 Vrms isolation rating meets the regulatory requirements for the intended application environment.

Selection Notes

Select this component when unidirectional isolation is required for up to four channels. The 100 Mb/s data rate suits moderate-speed communication links. Consider the 24-SOIC package size for board space constraints. Verify that the 3 V to 5.5 V supply range aligns with the system power architecture.

Part Context

This part belongs to the Si88441 series of digital isolators. It is designed for applications requiring reliable signal transmission across isolation barriers. The device integrates capacitive coupling technology to achieve electrical isolation without magnetic components.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks technical support for parametric equivalents if direct replacement is necessary.