SI88442ED-ASR

Overview

The SI88442ED-ASR is a Skyworks Solutions digital isolator featuring four channels in an SOIC-20 package. It operates with a unidirectional signal flow at a data rate of 100 Mb/s and provides 5000 Vrms insulation voltage. The device functions within a supply voltage range of 3 V to 5.5 V, drawing 10.8 mA of operating current. Key timing parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 4.5 ns pulse width distortion. It supports an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Provides high-speed digital isolation with 100 Mb/s data throughput
• Features robust 5000 Vrms insulation voltage for safety compliance
• Integrates four independent unidirectional signal channels
• Operates reliably across extended industrial temperature ranges

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive interfaces
• General-purpose isolated communication links

Procurement Notes

Verify the specific suffix 'ASR' indicates reel packaging versus tube variants like 'AS'. Confirm RoHS compliance status through official datasheets. Check for AEC-Q100 qualification if automotive use is intended, as this may require different suffixes. Ensure moisture sensitivity level handling protocols are followed during assembly.

Selection Notes

Select this component when four-channel unidirectional isolation is required. Compare against SI88442ED-IS for automotive-grade options. Consider power consumption differences between variants. Verify package dimensions match PCB layout constraints. Ensure input/output voltage levels align with system requirements.

Part Context

Part of the Si8844x family of capacitive coupling digital isolators. Designed for applications requiring high common-mode transient immunity. Offers integrated DC-DC converter options in other series members. Provides reliable signal transmission across isolation barriers.

Replacement Considerations

SI88442ED-AS is the tube-packaged equivalent. SI88442ED-IS offers automotive qualification. SI88442EC-ISR provides lower insulation voltage. Verify pin compatibility before substitution.