SI88343ED-ISR

Digital Isolators Overview

The SI88343ED-ISR is a Skyworks Solutions digital isolator featuring four channels with one forward and three reverse directions. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage. The device supports data rates up to 100 Mb/s with a typical propagation delay of 18 ns. It operates within a supply voltage range of 3 V to 5.5 V and includes an integrated DC-DC converter for isolated power generation. The component is housed in a 24-pin SOIC-Wide package and functions across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates a high-efficiency isolated DC-DC converter to eliminate the need for external isolated power supplies.
• Employs proprietary capacitive coupling technology to achieve robust signal transmission across isolation barriers.
• Includes a shutdown pin feature to minimize power consumption during inactive periods.

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment with safety-critical isolation needs
• Power electronics and motor control circuits

Digital Isolators Procurement Notes

Verify the NRND (Not Recommended for New Designs) status before finalizing procurement plans, as this indicates potential discontinuation or obsolescence risks. Confirm that the SOIC-Wide-24 package dimensions align with existing PCB footprints. Ensure that the integrated DC-DC converter specifications meet the target application's power budget requirements. Validate compliance with RoHS standards and moisture sensitivity levels for manufacturing processes.

Digital Isolators Selection Notes

Select this component when a single-channel input and three-channel output configuration is required alongside isolated power delivery. Consider the 100 Mb/s data rate limit for high-speed communication interfaces. Evaluate the 5000 Vrms isolation rating against system safety standards. Compare the 18 ns propagation delay against timing constraints of the specific application circuitry.

Digital Isolators Part Context

This part belongs to the Si8834x series of digital isolators from Skyworks Solutions. It is designed for general-purpose applications where space-saving integration of isolation and power conversion is critical. The series is characterized by its ability to replace traditional transformer-based solutions in compact form factors.

Digital Isolators Replacement Considerations

Public confirmed substitute: SI88344EC-ISR.