SI88444BD-IS

Overview

The SI88444BD-IS is a Skyworks digital isolator featuring four unidirectional channels in a 20-SOIC package. It operates on a supply voltage range of 3 V to 5.5 V with a maximum operating current of 11 mA. The device supports data rates up to 100 Mb/s and provides an isolation voltage of 5000 Vrms. 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 within a temperature range of -40°C to +125°C.

Feature Summary

• Four-channel unidirectional signal isolation using capacitive coupling technology
• Integrated high-voltage isolation capability rated at 5000 Vrms
• High-speed data transmission supporting 100 Mb/s rates with low latency
• Extended industrial temperature operation from -40°C to +125°C

Applications

• Industrial automation control systems requiring galvanic isolation
• Medical equipment signal processing circuits
• Power monitoring and management interfaces
• General-purpose digital communication isolation

Procurement Notes

Verify the specific suffix 'IS' against official Skyworks documentation to confirm the tape-and-reel packaging configuration versus tube variants. Ensure the component matches the required channel count and polarity specifications for the target circuit design. Cross-reference the datasheet revision history to validate current manufacturing status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when four independent unidirectional isolation paths are required within a single package. Consider the 20-SOIC footprint constraints and the 5000 Vrms isolation rating relative to system safety standards. Evaluate the 100 Mb/s data rate requirement against signal integrity needs and ensure the 3 V to 5.5 V supply range aligns with the host system's power architecture.

Part Context

This part belongs to the Si8844x family of high-data-rate digital isolators from Skyworks Solutions. These devices utilize proprietary capacitive coupling technology to provide robust isolation without optical components. The family offers various channel configurations and packaging options to support diverse industrial and commercial applications requiring reliable signal transmission across isolated boundaries.

Replacement Considerations

Publicly confirmed substitute part numbers for SI88444BD-IS are not available in the provided source material.