SI88243EC-ISR

Digital Isolators Overview

The SI88243EC-ISR is a Skyworks Solutions digital isolator featuring four channels with integrated DC-DC converter capability. 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 5000 Vrms isolation voltage and exhibits a typical common-mode transient immunity of 40 kV/µs. Propagation delay is specified at 18 ns, with rise and fall times of 2.5 ns. It functions reliably across an operating temperature range from -40°C to +125°C and is housed in a 20-SOIC package.

Digital Isolators Feature Summary

• Integrates high-speed digital isolation channels with independent power domains for flexible system design
• Provides robust signal integrity through high common-mode transient immunity characteristics
• Supports bidirectional or unidirectional signal transmission depending on channel configuration

Digital Isolators Applications

• Industrial automation systems requiring reliable signal isolation
• Power electronics interfaces including motor drives and inverters
• Medical equipment demanding high safety isolation standards

Digital Isolators Procurement Notes

Verify the specific suffix 'ISR' indicates tape-and-reel packaging versus tube variants. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the integrated DC-DC converter requirements match the target application's power budget and isolation voltage ratings before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when high channel density and low propagation delay are critical. The integrated DC-DC option simplifies board layout by eliminating external isolated power supplies. Compare CMTI specifications against noisy environments to ensure signal stability. Verify that the 20-SOIC footprint aligns with existing PCB constraints and thermal management requirements.

Digital Isolators Part Context

This part belongs to the Si88xx ISOvolt family, designed to replace legacy optocouplers. It offers superior performance in speed, size, and power consumption. The series targets applications needing reliable galvanic isolation in compact form factors. Integration of DC-DC converters allows for efficient power delivery across isolation barriers without external components.

Digital Isolators Replacement Considerations

Check for direct pin-compatible alternatives within the same Skyworks family. Verify if older revisions require updated firmware or hardware adjustments. Ensure substitute parts maintain equivalent isolation voltage and thermal performance levels.