SI88340BC-IS

Digital Isolators Overview

The SI88340BC-IS is a general-purpose digital isolator from Skyworks Solutions, featuring four unidirectional channels with capacitive coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides an insulation voltage of 3750 Vrms or 5000 Vrms depending on the specific rating context, with a common mode transient immunity (CMTI) of 40 kV/µs. It is housed in a 24-SOIC package (7.50 mm width) and functions reliably across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates four independent unidirectional signal paths using robust capacitive coupling for high-speed digital isolation.
• Delivers high noise immunity with a common mode transient immunity rating of 40 kV/µs to ensure reliable operation in electrically noisy environments.
• Supports wide operating voltage ranges and extended industrial temperature specifications for versatile deployment.

Digital Isolators Applications

• General-purpose digital isolation in industrial control systems
• Isolation interfaces for programmable logic controllers (PLCs)
• Signal isolation in motor drive and power conversion circuits

Digital Isolators Procurement Notes

Verify the specific insulation voltage rating required for your application, as sources indicate both 3750 Vrms and 5000 Vrms specifications for this part number family. Confirm the package variant matches your PCB footprint requirements. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference the datasheet version to confirm current production status and any potential design changes.

Digital Isolators Selection Notes

Select this component when four-channel isolation is required without integrated power conversion. The 100 Mb/s data rate suits moderate-speed applications where low propagation delay is beneficial. Consider the 24-SOIC package dimensions for board space constraints. Evaluate the 40 kV/µs CMTI against local electromagnetic interference levels to ensure signal integrity.

Digital Isolators Part Context

This device belongs to the Si88xx ISOvolt series, which integrates digital isolation with DC-DC converter capabilities in some variants. The SI88340BC-IS specifically focuses on signal isolation without onboard power generation, offering a compact solution compared to traditional optocouplers. It utilizes CMOS technology to reduce size, cost, and power consumption while enhancing reliability.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Check Skyworks official cross-reference guides for equivalent devices within the Si8834x family or other isolated channel counts.