SI88441BC-ISR

Digital Isolators Overview

The SI88441BC-ISR is a Skyworks Solutions digital isolator featuring four channels with a 3:1 input-to-output configuration. It utilizes capacitive coupling technology to provide an insulation voltage of 5000 Vrms. The device supports data rates up to 100 Mbps and offers a typical propagation delay of 18–23 ns. Operating within a supply voltage range of 3 V to 5.5 V, it functions across a temperature range of -40°C to +125°C. Packaged in a 20-SOIC (0.295", 7.50 mm wide) surface-mount format, this component ensures reliable signal transmission in high-noise environments.

Digital Isolators Feature Summary

• Integrates four unidirectional channels with a 3:1 input-to-output configuration for versatile signal routing.
• Employs capacitive coupling technology to achieve high isolation performance without magnetic interference.
• Provides robust common-mode transient immunity to maintain signal integrity in electrically noisy systems.

Digital Isolators Applications

• Industrial automation control systems requiring galvanic isolation
• Medical equipment signal interfaces demanding high safety standards
• Power electronics gate drive circuits for inverters and converters

Digital Isolators Procurement Notes

Verify the specific suffix 'BC' against official Skyworks documentation to confirm the exact insulation rating and channel configuration, as variations exist within the Si88441 family. Ensure the 20-SOIC package dimensions match your PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's current datasheet before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when a 5000 Vrms isolation barrier is required alongside four isolated channels. The 3:1 configuration suits applications where three inputs drive one output or similar asymmetric topologies. Consider the 100 Mbps data rate limit and 18–23 ns propagation delay for timing-sensitive designs. Evaluate the SOIC-20 package size against available board space constraints.

Digital Isolators Part Context

This part belongs to the Si88441 series of digital isolators from Skyworks Solutions. The series is characterized by its use of silicon dioxide isolation technology, offering superior reliability compared to traditional optical isolators. The SI88441BC-ISR specifically denotes the variant with 5 kV isolation and a 20-pin wide SOIC package, distinguishing it from lower-voltage or different-package alternatives in the same product line.

Digital Isolators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing circuit designs before considering alternative components from other manufacturers.