SI88621EC-ISR

Overview

The SI88621EC-ISR is a Skyworks Solutions digital isolator featuring two unidirectional channels and an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V, delivering a data rate of 100 Mb/s with a propagation delay of 18 ns. The device provides 3750 Vrms isolation via capacitive coupling and achieves a common-mode transient immunity of 40 kV/µs. Packaged in a 20-SOIC form factor, it supports operation from -40°C to +125°C.

Feature Summary

• Integrates a 2W DC-DC converter for isolated power generation
• Utilizes CMOS-based capacitive coupling technology
• Provides high common-mode transient immunity

Applications

• Industrial automation systems
• Inverter and motor drive circuits
• Programmable logic controller (PLC) inputs

Procurement Notes

Verify the specific suffix 'EC' against official Skyworks documentation to confirm insulation rating and safety certifications. Ensure the 'ISR' suffix matches the required reel packaging configuration. Cross-reference the datasheet revision date to validate current electrical parameters and compliance status before finalizing procurement orders.

Selection Notes

Select this component when a self-powered isolated channel is required to eliminate external bias supplies. The integrated DC-DC converter simplifies board layout by providing isolated power directly within the isolator package. Consider the 20-SOIC footprint and thermal characteristics for applications requiring robust performance across wide temperature ranges.

Part Context

This part belongs to the Si88xx ISOvolt family, designed to replace optocouplers in industrial isolation applications. It combines digital signal isolation with power conversion capabilities, offering reduced size and power consumption compared to traditional discrete solutions. The series targets high-reliability environments demanding strict safety standards.

Replacement Considerations

SI88621BC-ISR is listed as a substitute option.