SI88642ED-ASR

Overview

The SI88642ED-ASR is a general-purpose digital isolator from Skyworks Solutions, Inc., housed in a 24-SOIC package. It features four unidirectional channels with two forward and two reverse paths. The device supports data rates up to 100 Mb/s and provides an isolation voltage of 5000 Vrms. Operating parameters include a supply voltage range of 3 V to 5.5 V, a propagation delay of 18 ns, and rise/fall times of 25 ns. It operates within a temperature range of -40°C to +125°C and lacks a shutdown function.

Feature Summary

• Provides galvanic isolation for high-speed digital signals using capacitive coupling technology.
• Integrates four independent signal channels to support complex interface requirements.
• Ensures signal integrity through low pulse width distortion specifications.

Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment interfaces needing high insulation reliability
• General-purpose digital communication links

Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm the reel packaging configuration. Ensure compatibility with the 24-SOIC footprint during PCB layout. Confirm that the unidirectional channel architecture meets the system's signal flow requirements before finalizing procurement.

Selection Notes

Select this component when a 5000 Vrms isolation rating is required for unidirectional applications. The absence of a shutdown pin distinguishes it from variants like the ISR. Consider the 25 ns transition times for timing-sensitive designs. Validate that the SOIC-24 package dimensions fit the mechanical constraints of the target enclosure.

Part Context

This part belongs to the Si88642 series of digital isolators manufactured by Skyworks Solutions. The series utilizes proprietary capacitive isolation technology to provide reliable signal transmission across isolation barriers. The ED variant specifically denotes the 5000 Vrms insulation capability and standard operating characteristics defined in the manufacturer's datasheet.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other Skyworks isolators only if they share identical pinouts and electrical specifications.