SI88442ED-ISR

Overview

The SI88442ED-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels with an integrated DC-DC converter. It provides 5000 Vrms isolation voltage and supports data rates up to 100 Mb/s. The device operates on a supply voltage between 3 V and 5.5 V, drawing 10.8 mA of operating current. Key electrical parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 10 ns pulse width capability. It functions within a temperature range of -40°C to +125°C and utilizes capacitive coupling technology in a SOIC-Wide-20 package.

Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation barrier
• Supports high-speed digital signal transmission

Applications

• Industrial automation systems
• Medical equipment interfaces
• Power electronics control circuits

Procurement Notes

Verify the specific suffix 'ED' indicates the wide SOIC-20 package configuration distinct from standard variants. Confirm the 'ISR' suffix corresponds to the reel packaging format required for surface-mount assembly processes. Ensure compatibility with the 5 kV isolation rating requirements for your specific safety standards before procurement.

Selection Notes

Select this component when a 5 kV isolation barrier is required alongside integrated power conversion. The unidirectional channel configuration suits applications where signal flow is strictly one-way across the isolation boundary. Consider the thermal performance and humidity sensitivity specifications during PCB layout design to ensure reliable operation under specified environmental conditions.

Part Context

This part belongs to the Si8844x family of digital isolators from Skyworks Solutions. It shares core architectural features with other members like the SI88442EC but differs in isolation voltage ratings and package dimensions. The family is designed for general-purpose interface applications requiring galvanic isolation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and functional equivalence carefully if considering alternative manufacturers or different series parts.