SI88344ED-ISR

Digital Isolators Overview

The SI88344ED-ISR is a general-purpose digital isolator from Skyworks Solutions, featuring four unidirectional channels with an integrated DC-DC converter. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V and offers a common-mode transient immunity of 40 kV/µs. Packaged in a 24-SOIC (0.295", 7.50mm wide) surface-mount format, it functions across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust signal isolation via capacitive coupling technology
• Features shutdown functionality for power management optimization

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Programmable logic controller (PLC) input/output modules
• Inverter and motor drive control circuits
• Servo motor control interfaces

Digital Isolators Procurement Notes

Verify the component status carefully as this part is marked Not Recommended for New Designs (NRND). Confirm that existing inventory or last-time-buy availability meets project requirements before procurement. Ensure the specific suffix matches the required package width and thermal characteristics. Cross-reference datasheet revisions to ensure compatibility with current design specifications.

Digital Isolators Selection Notes

Select this component when a compact solution with integrated isolated power is required for multi-channel applications. The 24-SOIC package offers a balance of channel density and board space efficiency. Consider the 100 Mb/s data rate and 40 kV/µs CMTI for noise-sensitive industrial environments. Evaluate the NRND status against long-term production lifecycle needs.

Digital Isolators Part Context

This device belongs to the Si88xx ISOvolt family, designed to replace optocouplers in industrial isolation applications. It combines digital isolation with on-chip power conversion to reduce system complexity and size. The series targets high-reliability markets such as inverters, motor drives, and PLCs where compact form factors and enhanced performance are critical.

Digital Isolators Replacement Considerations

SI88344EC-ISR is listed as a similar alternative by the manufacturer.