SI88344EC-ISR

Digital Isolators Overview

The SI88344EC-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels and an integrated DC-DC converter. It provides 5000 Vrms isolation using capacitive coupling technology. The device supports data rates up to 100 Mb/s with a typical propagation delay of 18 ns. Operating voltage ranges from 3 V to 5.5 V, and it functions within a temperature range of -40°C to +125°C. Packaged in a 24-SOIC (Wide) surface-mount format, it offers high common-mode transient immunity.

Digital Isolators Feature Summary

• Integrates a 2W isolated DC-DC converter for power supply generation across the isolation barrier
• Utilizes Skyworks ISOvolt capacitive coupling technology for enhanced reliability and reduced size compared to optical couplers
• Features a shutdown pin for low-power management and system control

Digital Isolators Applications

• Industrial automation systems requiring robust signal isolation
• Inverter and motor drive circuits for power electronics
• Programmable logic controller (PLC) input/output modules
• Medical equipment needing galvanic isolation for safety compliance

Digital Isolators Procurement Notes

Verify the specific suffix 'EC' to confirm the inclusion of the integrated DC-DC converter, as this variant differs from non-converter models. Ensure the 'ISR' suffix matches the required reel packaging quantity of 1250 units. Confirm RoHS compliance status through official Skyworks documentation before finalizing procurement specifications.

Digital Isolators Selection Notes

Select this component when a single-chip solution combining signal isolation and isolated power generation is required. The 4-channel configuration suits applications needing multiple isolated data lines. Consider the 5000 Vrms rating for high-voltage industrial environments. Verify that the 100 Mb/s speed meets the system's timing requirements.

Digital Isolators Part Context

This part belongs to the Si8834x family of digital isolators from Skyworks Solutions. These devices are designed to replace traditional optocouplers, offering smaller form factors and lower power consumption. The family includes variants with and without integrated converters, catering to diverse industrial and automotive isolation needs.

Digital Isolators Replacement Considerations

SI88344ED-ISR is listed as a potential alternative by distributors, though both parts may carry NRND status. Verify electrical parameter compatibility and package dimensions before substitution. Check current availability and lifecycle status for both components to ensure long-term supply chain stability.