SI88243BD-ISR

Digital Isolators Overview

The SI88243BD-ISR is a Skyworks Solutions digital isolator featuring four channels with integrated DC-DC converters. It provides 5000 Vrms isolation using 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, a common-mode transient immunity of 40 kV/µs, and pulse width distortion of 7 ns. It functions reliably across an extended temperature range from -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates isolated power generation via built-in DC-DC converter
• Provides high-speed signal transmission with low latency
• Ensures robust noise immunity in electrically noisy environments

Digital Isolators Applications

• Industrial automation systems
• Motor drive control circuits
• Inverter gate driver interfaces

Digital Isolators Procurement Notes

This component carries the NRND status, indicating it is not recommended for new designs. Availability may be limited as manufacturers transition to alternative solutions. Verify current lifecycle status and lead times with authorized distributors before finalizing procurement plans to ensure supply chain continuity.

Digital Isolators Selection Notes

Engineers should evaluate this part against newer Skyworks isolation families that offer enhanced performance or updated packaging options. Consider system requirements for channel count, isolation voltage, and power consumption when comparing alternatives. Ensure the selected replacement maintains compatibility with existing PCB footprints and thermal management strategies.

Digital Isolators Part Context

The SI88243BD-ISR belongs to the Si88xx ISOvolt family, designed to replace traditional optocouplers in industrial applications. It combines digital isolation with on-chip power conversion, reducing external component count and board space. This integration simplifies design complexity while improving reliability in high-voltage switching environments.

Digital Isolators Replacement Considerations

SI88243BC-ISR is listed as a similar substitute option.