SI88321BC-IS

Digital Isolators Overview

The SI88321BC-IS is a unidirectional digital isolator from Skyworks Solutions, housed in a SOIC-20 package. It features two channels with a data rate of 100 Mb/s and an insulation voltage of 3750 Vrms using capacitive coupling. The device operates on a supply voltage between 3 V and 5.5 V, drawing 8 mA. Key timing parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 4.5 ns pulse width distortion. It supports AEC-Q100 qualification and functions within a temperature range of -40 C to +125 C.

Digital Isolators Feature Summary

• Integrates a DC-DC converter for isolated power generation
• Provides high common-mode transient immunity via capacitive coupling
• Supports automotive applications through AEC-Q100 qualification

Digital Isolators Applications

• Automotive electronic control units
• Industrial motor drives
• Power supply feedback loops

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the procurement channel provides valid RoHS compliance documentation. Confirm that the component meets the required AEC-Q100 reliability standards for the intended application environment before finalizing orders.

Digital Isolators Selection Notes

Select this component when a unidirectional signal path with integrated isolated power is required. The 3750 Vrms isolation rating suits standard industrial and automotive voltage barriers. Consider the 100 Mb/s speed limit for bandwidth requirements. The SOIC-20 package offers a balance of isolation creepage distance and board space efficiency compared to wider packages.

Digital Isolators Part Context

This part belongs to the Si88321 series of digital isolators. It differs from variants like the SI88321ED-IS by offering a lower 3750 Vrms insulation rating instead of 5000 Vrms. The 'BC' designation typically indicates specific packaging or qualification tiers within the family. It serves as a compact solution for galvanic isolation in systems requiring both signal transmission and isolated power delivery.

Digital Isolators Replacement Considerations

The SI88321BC-ISR is available as a reel-based alternative with identical electrical specifications. Verify that the tape-and-reel format matches automated assembly equipment capabilities. No other direct cross-model replacements are confirmed in the provided documentation.