SI88241BC-ISR

Overview

The SI88241BC-ISR is a general-purpose digital isolator manufactured by Skyworks Solutions Inc. It features four unidirectional channels with a data rate of 100 Mb/s and an insulation voltage of 5000 Vrms using capacitive coupling. The device operates on a supply voltage between 3 V and 5.5 V, with a maximum propagation delay of 18 ns. It includes a shutdown function and supports pulse widths of 10 ns. The component is housed in a SOIC-Wide-20 package and is rated for operation from -40 C to +125 C.

Feature Summary

• Integrates four high-speed digital isolation channels within a single compact package.
• Incorporates an integrated DC-DC converter to provide isolated power supply capability.
• Utilizes silicon-based capacitive coupling technology for enhanced reliability compared to optical couplers.

Applications

• Industrial automation systems requiring robust signal isolation
• Power conversion circuits needing galvanic separation
• Motor drive control interfaces

Procurement Notes

Verify the specific suffix 'ISR' corresponds to the reel packaging configuration as indicated in distributor records. Confirm that the part status remains acceptable for procurement despite potential lifecycle changes. Ensure compatibility with the required SOIC-Wide-20 footprint during PCB layout validation. Cross-reference the datasheet revision to confirm electrical parameters match design requirements.

Selection Notes

Select this component when four independent isolation channels are required alongside integrated power conversion. The 100 Mb/s data rate suits moderate-speed digital communication needs. Consider the 5000 Vrms insulation rating for applications demanding high safety margins. Evaluate the thermal performance within the SOIC-Wide-20 package against system heat dissipation constraints.

Part Context

This device belongs to the Si88xx ISOvolt family, which combines digital isolation with integrated DC-DC converters. It serves as a replacement for traditional optocoupler solutions in industrial applications. The series emphasizes reduced size, lower power consumption, and higher reliability through CMOS technology.

Replacement Considerations

Public confirmed substitute part numbers: SI88241ED-ISR, SI88241BD-ISR.