SI88441ED-ASR

Overview

The SI88441ED-ASR is a general-purpose digital isolator from Skyworks Solutions, featuring four channels with a 3/1 input-output configuration. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage and supports data rates up to 100 Mbps. The device operates within a supply voltage range of 3 V to 5.5 V and offers a common-mode transient immunity of 40 kV/µs. Packaged in a 20-SOIC (0.295 inch, 7.50 mm wide) surface-mount format, it functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-efficiency isolated DC-DC converter for power delivery across the isolation barrier
• Employs silicon dioxide (SiO2) capacitive coupling technology for signal transmission
• Provides robust common-mode transient immunity to prevent false triggering

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing safe patient isolation
• Power metering and energy management circuits

Procurement Notes

Verify the specific suffix 'ASR' to confirm the inclusion of the integrated isolated DC-DC converter and the tape-and-reel packaging format. Ensure compatibility with the 20-SOIC footprint and validate that the 3/1 channel configuration meets the system's directional signal requirements before procurement.

Selection Notes

Select this component when an integrated isolated power source is required to simplify board design and reduce external component count. It is suitable for applications demanding high-speed data transfer alongside significant voltage isolation barriers. Consider the thermal performance and humidity sensitivity等级 during layout planning.

Part Context

This part belongs to the Si884xx family of digital isolators, which are designed to replace traditional optocouplers in modern electronic designs. The family emphasizes higher reliability, smaller form factors, and improved electrical performance characteristics compared to legacy isolation technologies.

Replacement Considerations

SI88441BC-ISR is listed as a similar substitute option.