SI88221EC-IS

Digital Isolators Overview

The SI88221EC-IS is a Skyworks Solutions digital isolator featuring two independent channels with integrated DC-DC converters. It provides 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, exhibits a propagation delay of 23 ns, and offers a common-mode transient immunity of 40 kV/µs. It functions reliably across an extended temperature range from -40 °C to +125 °C.

Digital Isolators Feature Summary

• Integrates dual-channel digital isolation with on-board DC-DC power conversion
• Provides high-voltage electrical isolation for signal transmission
• Delivers fast switching speeds with low propagation delay
• Ensures robust noise immunity against rapid voltage transients

Digital Isolators Applications

• Industrial automation systems requiring isolated I/O interfaces
• Programmable logic controllers (PLCs) for input/output isolation
• Power electronics circuits needing galvanic separation
• Motor drive control units requiring reliable signal transfer

Digital Isolators Procurement Notes

Verify the specific suffix designation during procurement to ensure compatibility with required packaging formats and thermal specifications. Confirm that the selected variant aligns with the intended isolation voltage ratings and operational temperature ranges defined in the official datasheet. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and traceability before finalizing purchase orders.

Digital Isolators Selection Notes

Select this component when designing systems requiring simultaneous signal isolation and onboard power generation. Evaluate the trade-offs between channel count and package size relative to board space constraints. Ensure the input and output voltage levels match the target logic families. Consider the thermal performance characteristics under maximum load conditions to maintain long-term reliability in demanding environments.

Digital Isolators Part Context

This device belongs to the ISOvolt family of digital isolators from Skyworks Solutions. These products utilize capacitive coupling technology to replace traditional optocouplers. The series aims to reduce system cost, size, and power consumption while enhancing reliability. It serves as a modern alternative for applications previously reliant on legacy isolation components.

Digital Isolators Replacement Considerations

Direct substitutes include other models within the SI88221 series or compatible devices from the same manufacturer offering identical pin configurations and isolation ratings. Verify functional equivalence regarding propagation delay and common-mode transient immunity before substitution.