SI88442EC-ISR

Overview

The SI88442EC-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels and an integrated DC-DC converter. It provides 5000 Vrms isolation voltage with capacitive coupling technology. The device supports data rates up to 100 Mb/s, offering a propagation delay of 18 ns and rise/fall times of 2.5 ns. It operates within a supply voltage range of 3 V to 5.5 V, consuming 10.8 mA of working power. The component functions reliably between -40°C and +125°C, housed in a 20-SOIC package.

Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Utilizes silicon dioxide (SiO2) capacitive coupling for robust signal transmission
• Provides high common-mode transient immunity for noise-sensitive environments

Applications

• Industrial automation control systems
• Power electronics monitoring circuits
• General-purpose digital isolation interfaces

Procurement Notes

Verify the specific suffix 'ISR' confirms the reel packaging format required for automated surface-mount assembly. Ensure the selected variant matches the 5000 Vrms insulation rating and 20-SOIC footprint specifications. Confirm that the humidity sensitivity classification aligns with your facility's storage and reflow soldering protocols before finalizing procurement orders.

Selection Notes

Select this component when bidirectional communication is not required, as it is strictly unidirectional. Choose the ISR suffix if tape-and-reel delivery is necessary for high-volume production lines. This part is suitable for applications demanding high isolation voltage and integrated power conversion without external magnetic components.

Part Context

This device belongs to the Si8844x series of digital isolators from Skyworks Solutions. It represents a class of devices combining signal isolation with on-chip power management. The series utilizes advanced CMOS processes to achieve high reliability and performance in electrically noisy industrial environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.