SI88442ED-AS

Overview

The SI88442ED-AS is a Skyworks Solutions digital isolator featuring four unidirectional channels in an SOIC-20 package. It supports data rates up to 100 Mb/s with a propagation delay of 18 ns and rise/fall times of 2.5 ns. The device operates on a supply voltage between 3 V and 5.5 V, drawing 10.8 mA. It provides 5000 Vrms isolation voltage and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides high-speed digital signal isolation with low propagation delay
• Integrates four independent unidirectional isolation channels
• Supports wide operating voltage and temperature ranges for industrial reliability

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-voltage safety isolation
• Power electronics control circuits
• General-purpose isolated communication interfaces

Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm pinout and packaging details. Ensure compatibility with required isolation voltage standards for your application. Check current availability status as distribution may vary by region. Confirm RoHS compliance requirements match project specifications before finalizing procurement.

Selection Notes

Select this component when four-channel unidirectional isolation is required without integrated power conversion. Compare performance metrics such as propagation delay and common-mode transient immunity against alternative isolators. Ensure the SOIC-20 package fits the PCB layout constraints. Verify that the 5000 Vrms isolation rating meets the safety requirements of the target system.

Part Context

This part belongs to the Si88442 series of digital isolators from Skyworks Solutions. The series offers various configurations including options with integrated DC-DC converters. The SI88442ED-AS specifically denotes the version without the onboard power converter, relying on external power supplies for both sides of the isolation barrier.

Replacement Considerations

Check for direct substitutes like the SI88442ED-IS which includes an integrated DC-DC converter. Ensure any replacement maintains the same channel count, polarity, and isolation voltage ratings. Verify package compatibility if swapping between different suffixes.