SI88420BD-ISR

Digital Isolators Overview

The SI88420BD-ISR is a Skyworks Solutions digital isolator featuring an integrated DC-DC converter. It provides two unidirectional channels with a data rate of 100 Mb/s and 5000 Vrms isolation voltage. The device operates on a supply voltage range of 3 V to 5.5 V, with a maximum 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 16-SOIC (Wide) format, it utilizes capacitive coupling technology for signal transmission.

Digital Isolators Feature Summary

• Integrates a fully-controlled secondary sensing DC-DC converter
• Provides high-speed signal isolation via capacitive coupling
• Features unidirectional channel configuration

Digital Isolators Applications

• General purpose digital isolation
• Industrial automation systems
• Power supply control circuits

Digital Isolators Procurement Notes

Verify the component status as NRND (Not Recommended for New Designs) before procurement. Confirm that the SOIC-Wide-16 package matches your PCB footprint requirements. Ensure the unidirectional channel configuration aligns with your circuit design needs. Check for RoHS compliance details if required by your manufacturing standards. Validate the operating temperature range against your environmental specifications.

Digital Isolators Selection Notes

Select this component when a self-powered isolated DC-DC converter is required alongside signal isolation. The integrated converter eliminates the need for external isolated power supplies. Consider the 100 Mb/s data rate for moderate-speed applications. The wide SOIC package facilitates easier PCB assembly compared to smaller footprints. Verify that the 5000 Vrms isolation rating meets your safety standards.

Digital Isolators Part Context

This part belongs to the Si88420 series of digital isolators from Skyworks Solutions. It combines signal isolation with power conversion in a single package. The series is designed for applications requiring robust isolation between different voltage domains. The BD suffix indicates specific performance characteristics within the family.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.