SI88442EC-ASR

Overview

The SI88442EC-ASR is a unidirectional digital isolator from Skyworks Solutions, housed in a 20-SOIC package. It features four channels with two forward and two reverse paths, supporting data rates up to 100 Mb/s. The device provides an isolation voltage of 3750 Vrms and operates within a supply voltage range of 3 V to 5.5 V. Key electrical parameters include a propagation delay of 18 ns, rise and fall times of 2.5 ns, and a pulse width distortion of 4.5 ns. It functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Unidirectional signal transmission architecture
• Integrated capacitive coupling isolation technology
• High common-mode transient immunity capability

Applications

• Industrial automation control systems
• Power electronics interface circuits
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm packaging type and moisture sensitivity level. Ensure the procurement channel sources genuine components with valid RoHS compliance records. Cross-reference the datasheet revision date to guarantee alignment with current manufacturing specifications and pinout configurations.

Selection Notes

Select this component for applications requiring high-speed unidirectional data transfer with robust galvanic isolation. The wide operating temperature range suits harsh industrial environments. Verify that the required isolation voltage meets system safety standards and that the SOIC-20 footprint fits the PCB layout constraints.

Part Context

This part belongs to the Si88442 series of digital isolators. It utilizes Skyworks' proprietary capacitive coupling technology to provide isolation without magnetic cores. The series offers various channel configurations and insulation ratings to support diverse interface requirements in modern electronic designs.

Replacement Considerations

Check Skyworks documentation for direct cross-references or updated revisions. Evaluate alternative Skyworks models with matching channel counts and isolation voltages if availability is constrained.