SI88340BC-ISR

Digital Isolators Overview

The SI88340BC-ISR is a general-purpose digital isolator from Skyworks Solutions, featuring four unidirectional channels with a data rate of 100 Mb/s. It provides 5000 Vrms isolation voltage and exhibits a common-mode transient immunity (CMTI) of 40 kV/µs. The device operates on a supply voltage range of 3 V to 5.5 V, with propagation delays of 18 ns maximum. It functions within an industrial temperature range of -40°C to +125°C and is housed in a 24-SOIC package.

Digital Isolators Feature Summary

• Integrates four independent unidirectional signal paths for multi-channel isolation requirements.
• Utilizes capacitive coupling technology to achieve high-speed data transmission at 100 Mb/s.
• Delivers robust noise immunity with a typical common-mode transient immunity of 40 kV/µs.
• Includes an integrated 2 W DC-DC converter to provide isolated power supplies.

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation between control logic and field devices.
• Programmable logic controllers (PLCs) for input/output module signal separation.
• Motor drive circuits where high-speed gate driver isolation is necessary.
• Inverter applications demanding reliable communication across potential differences.

Digital Isolators Procurement Notes

Verify the specific suffix 'BC' against current Skyworks documentation to confirm pinout compatibility and feature set, as variations exist within the Si8834x family. Confirm that the 'ISR' package designation matches the required 24-SOIC form factor for your PCB layout. Ensure the design accounts for the integrated DC-DC converter requirements if utilizing the power supply functionality.

Digital Isolators Selection Notes

Select this component when four isolated channels are needed alongside an integrated power source. The 100 Mb/s speed suits moderate-to-high frequency digital signals. The wide operating temperature range supports harsh industrial environments. Consider the 5000 Vrms rating for safety compliance in mains-connected systems.

Digital Isolators Part Context

This part belongs to the Si88xx ISOvolt series, which combines digital isolation with integrated DC-DC converters. It serves as a modern replacement for traditional optocouplers, offering smaller size and lower power consumption. The series targets industrial and automotive applications requiring high reliability and compact form factors.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-compatible alternatives within the Si8834x family. Verify if variants like SI88340EC-ISR offer identical electrical characteristics or different packaging options suitable for existing designs.