SI88243EC-ASR

Digital Isolators Overview

The SI88243EC-ASR is a unidirectional digital isolator from the Si88243 series, manufactured by Skyworks Solutions. It features four channels with one forward and three reverse paths, housed in a 20-SOIC package. The device supports data rates up to 100 Mb/s and offers an insulation voltage of 3750 Vrms. It operates within a supply voltage range of 3 V to 5.5 V, consuming 9.5 mA of working power current. Key timing parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and pulse width distortion of 4.5 ns. It functions reliably between -40°C and +125°C.

Digital Isolators Feature Summary

• Integrates four isolated signal channels with unidirectional data flow capability
• Includes on-chip DC-DC converter for independent power domain isolation
• Provides high common-mode transient immunity for noisy environments

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces such as CAN and LIN buses
• Power conversion systems needing gate drive isolation

Digital Isolators Procurement Notes

Verify the specific suffix 'EC' against official Skyworks documentation to confirm temperature grade and packaging type. Ensure the SOIC-20 footprint matches your PCB design constraints. Confirm RoHS compliance status through the manufacturer's latest product change notifications before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when unidirectional isolation with integrated power management is required. The 100 Mb/s speed suits standard automotive and industrial protocols. Verify that the 3750 Vrms insulation rating meets system safety standards. Check if the 20-SOIC package fits available board space compared to other channel configurations.

Digital Isolators Part Context

This part belongs to the Si8824x family of automotive-grade digital isolators. These devices combine signal isolation with integrated DC-DC converters, reducing external component count. The family targets applications demanding high reliability and compact form factors in harsh electrical environments.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-compatible alternatives within the Si8824x series. Verify if SI88243ED-AS or SI88243BD-AS meet identical electrical specifications. Ensure any substitute maintains the same unidirectional channel configuration and thermal performance.