SI88242ED-IS

Digital Isolators Overview

The SI88242ED-IS is a Skyworks Solutions digital isolator featuring four channels with an integrated DC-DC converter. It provides 5000 Vrms isolation and supports data rates up to 100 Mbps. The device utilizes capacitive coupling technology for signal transmission. It operates within a supply voltage range of 3 V to 5.5 V. The component offers a common-mode transient immunity of 40 kV/µs. Typical propagation delays are 12.6 ns and 17.5 ns. Pulse width distortion is typically 4.8 ns. Rise and fall times are approximately 2.5 ns. It is housed in a 20-SOIC package.

Digital Isolators Feature Summary

• Integrates a high-efficiency isolated DC-DC converter to power the secondary side, eliminating the need for external isolated supplies.
• Provides robust galvanic isolation via capacitive coupling technology with high common-mode transient immunity.
• Supports unidirectional signal transmission across four independent channels for general-purpose applications.

Digital Isolators Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reliable signal isolation between circuits
• Power electronics control circuits utilizing isolated gate drive signals

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' indicates the inclusion of the integrated DC-DC converter, distinguishing it from non-isolated variants like 'AS'. Confirm that the lifecycle status is noted as NRND (Not Recommended for New Designs) by major distributors, which may impact long-term availability. Ensure the 20-SOIC package dimensions match the PCB footprint requirements before finalizing procurement plans.

Digital Isolators Selection Notes

Select this component when an integrated isolated power source is required alongside signal isolation to reduce bill-of-materials complexity. The 100 Mbps data rate suits standard industrial protocols. Consider the 5000 Vrms isolation rating for high-voltage separation needs. Evaluate the 40 kV/µs CMTI for environments with rapid voltage transients. The wide operating temperature range supports harsh industrial conditions.

Digital Isolators Part Context

This part belongs to the Si8824x family of digital isolators from Skyworks Solutions. It is designed for general-purpose isolation applications where space and component count are critical. The integration of the DC-DC converter simplifies system design by providing both signal and power isolation in a single package. It competes with other high-performance isolated transceivers in the industrial market.

Digital Isolators Replacement Considerations

SI88242BC-IS is listed as a similar alternative part number. Verify functional equivalence regarding the integrated DC-DC converter and channel configuration before substitution. Check for any differences in pinout or thermal characteristics if replacing the current unit.