SI88221BC-IS

Digital Isolators Overview

The SI88221BC-IS is a Skyworks Solutions digital isolator featuring two unidirectional channels with an integrated DC-DC converter. It utilizes capacitive coupling technology to provide 3750 Vrms isolation voltage and supports data rates up to 100 Mb/s. The device operates on a supply voltage between 3 V and 5.5 V, drawing 8 mA of operating current. Key electrical parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and a pulse width distortion of 4.5 ns. It functions within a temperature range of -40°C to +125°C and is housed in a 16-pin SOIC package.

Digital Isolators Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation for signal transmission
• Supports high-speed data communication at 100 Mb/s
• Features low propagation delay for precise timing applications

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power electronics interfaces such as motor drives
• Programmable logic controller (PLC) input modules

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' confirms the SOIC-16 package and tube packaging format. Confirm AEC-Q100 automotive qualification status if required for your application. Ensure the datasheet revision matches your design requirements. Check moisture sensitivity level handling instructions during assembly. Validate that the integrated DC-DC converter meets your isolated side power needs.

Digital Isolators Selection Notes

Select this component when a compact solution combining isolation and power conversion is needed. The 16-pin SOIC footprint suits space-constrained designs. Consider the 100 Mb/s speed limit against higher-speed alternatives if necessary. Evaluate the 8 mA current consumption against system power budgets. Verify compatibility with the intended logic levels on both sides of the isolation barrier.

Digital Isolators Part Context

This part belongs to the Si88xx ISOvolt family from Skyworks Solutions. These devices are designed to replace optocouplers in industrial and automotive applications. The family offers improved performance in terms of size, power consumption, and reliability compared to traditional optical isolation technologies.

Digital Isolators Replacement Considerations

Check for direct pin-compatible substitutes within the Si8822x series. Verify if alternative packages like ISR are functionally equivalent. Ensure any replacement maintains the same isolation voltage rating and channel configuration.