SI88244BC-ISR

Digital Isolators Overview

The SI88244BC-ISR is a four-channel unidirectional digital isolator utilizing capacitive coupling technology. It provides an isolation voltage of 3750 Vrms and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V and features a propagation delay of 18 ns with rise and fall times of 2.5 ns. It is housed in a surface-mount SOIC-20 package and is supplied in a reel format.

Digital Isolators Feature Summary

• Integrates four independent unidirectional signal channels within a single compact package for high-density circuit isolation.
• Employs silicon-based capacitive coupling technology to replace traditional optocouplers, offering enhanced reliability and lower power consumption.
• Delivers high common-mode transient immunity to ensure stable signal transmission in electrically noisy industrial environments.

Digital Isolators Applications

• Industrial automation systems requiring robust signal isolation between control logic and field devices.
• Programmable logic controllers (PLCs) for secure communication across different voltage domains.
• Power electronics interfaces where galvanic isolation is necessary for safety and noise reduction.
• Motor drive circuits necessitating reliable gate driving signals separated from high-voltage power stages.

Digital Isolators Procurement Notes

Verify the specific suffix 'ISR' to confirm the reel packaging configuration, as it differs from tube-packaged variants like the IS version. Ensure compliance with moisture sensitivity level requirements during storage and handling. Cross-reference the manufacturer part number against official Skyworks documentation to validate authenticity and avoid counterfeit components.

Digital Isolators Selection Notes

Select this component when four isolated channels are required for unidirectional data transfer at speeds up to 100 Mbps. The 3750 Vrms isolation rating suits applications demanding standard safety isolation levels. Consider the SOIC-20 footprint for PCB layout constraints and verify that the 3 V to 5.5 V supply range aligns with the system's voltage architecture.

Digital Isolators Part Context

This part belongs to the Si8824x series of digital isolators from Skyworks Solutions. The series utilizes advanced CMOS processes to provide high-speed isolation with low power dissipation. The SI88244 variant specifically offers four channels, catering to designs needing multiple isolated signals without increasing board space significantly compared to discrete solutions.

Digital Isolators Replacement Considerations

SI88244BC-IS serves as a parameter-equivalent alternative, differing primarily in tube packaging rather than electrical performance.