SI88441BD-ISR

Digital Isolators Overview

The SI88441BD-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels and an integrated DC-DC converter. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage with a data rate of 100 Mb/s. The device operates on a supply voltage range of 3 V to 5.5 V, offering a propagation delay of 18 ns. It supports a common-mode transient immunity of 40 kV/µs and functions within a temperature range of -40°C to +125°C. Packaged in a 20-SOIC (0.295", 7.50 mm wide) surface-mount format, it includes a shutdown feature.

Digital Isolators Feature Summary

• Integrates a high-efficiency isolated DC-DC converter for power delivery across the isolation barrier
• Provides robust signal transmission via capacitive coupling with high common-mode transient immunity
• Features a shutdown pin for active power management and reduced standby consumption

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power electronics control circuits with high-voltage interfaces

Digital Isolators Procurement Notes

Verify component authenticity through authorized distributors due to the NRND status. Confirm package integrity upon receipt as moisture sensitivity requires proper handling. Cross-reference datasheet revisions to ensure compatibility with existing designs. Validate thermal performance under actual operating conditions before final implementation.

Digital Isolators Selection Notes

Choose this model when integrated isolated power is required alongside signal isolation. The 20-pin SOIC package suits space-constrained PCB layouts. Ensure input/output voltage levels match the 3 V to 5.5 V operational range. Consider the 100 Mb/s data rate limit for high-speed communication requirements.

Digital Isolators Part Context

This component belongs to the Si884xx series of digital isolators from Skyworks Solutions. It combines signal isolation with power conversion in a single package. The series targets applications demanding high reliability and compact form factors. The BD suffix indicates specific channel configuration and insulation ratings within the family.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers: SI88441ED-ISR, SI88441EC-ISR.