SI88240BD-IS

Digital Isolators Overview

The SI88240BD-IS is a Skyworks Solutions digital isolator featuring four unidirectional channels and an integrated DC-DC converter. It provides 5000 Vrms isolation voltage with capacitive coupling technology. The device supports data rates up to 100 Mb/s and operates within a supply voltage range of 3 V to 5.5 V. Key electrical parameters include a propagation delay of 18 ns and common mode transient immunity of 40 kV/µs. It is housed in a SOIC-Wide-20 package and functions across a temperature range from -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates a high-voltage DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation for signal transmission
• Supports high-speed data communication at 100 Mb/s

Digital Isolators Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive interfaces

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' against official Skyworks documentation to confirm pinout and functional compatibility, as variations exist within the family. Note that this component carries an NRND (Not Recommended for New Designs) lifecycle status according to distributor listings; ensure long-term availability requirements are met before procurement. Cross-reference datasheet revisions to confirm current manufacturing specifications.

Digital Isolators Selection Notes

Select this component when a single-chip solution combining quad-channel isolation and isolated power is required. The integrated DC-DC converter eliminates external transformer complexity. Ensure the 5000 Vrms isolation rating meets system safety standards. Verify that the 100 Mb/s data rate aligns with application timing requirements and that the SOIC-Wide-20 package fits the PCB layout constraints.

Digital Isolators Part Context

This part belongs to the SI8824x series of digital isolators with integrated DC-DC converters. It is designed for applications requiring galvanic isolation between low-voltage control circuits and high-voltage power stages. The series offers various channel counts and isolation voltages, with the SI88240BD-IS specifically providing four channels and 5kV isolation capability.

Digital Isolators Replacement Considerations

Public confirmed substitutes include SI88240BC-IS for lower isolation voltage requirements or SI88243BD-IS for similar performance levels. Check datasheets for exact parameter matching regarding isolation voltage and package dimensions.