SI88241BD-AS

Digital Isolators Overview

The SI88241BD-AS is an automotive-grade quad digital isolator manufactured by Skyworks Solutions. It features four channels with three unidirectional forward paths and one reverse path, operating at a data rate of 100 Mb/s. The device provides 5000 Vrms insulation voltage via capacitive coupling and includes an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V, drawing 12 mA of quiescent current. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and pulse width distortion of 4.5 ns. It supports shutdown functionality and functions reliably between -40°C and +125°C.

Digital Isolators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments.
• Integrated high-voltage DC-DC converter eliminates the need for external isolated power supplies.
• Capacitive coupling technology ensures high electromagnetic immunity and signal integrity.
• Shutdown pin allows for low-power management by disabling outputs when not in use.

Digital Isolators Applications

• Automotive battery management systems requiring galvanic isolation.
• On-board charging (OBC) interfaces in electric vehicles.
• High-speed communication links in noisy industrial or automotive environments.
• Inverter gate drive circuits where isolated control signals are necessary.

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Confirm AEC-Q100 certification status for your specific application requirements. Check for any recent Product Change Notifications (PCN) that may affect lead times or material composition. Ensure compatibility with your system's voltage levels and isolation voltage ratings before finalizing procurement.

Digital Isolators Selection Notes

Select this component when a quad-channel isolator with an integrated isolated power source is required. It is suitable for applications demanding high common-mode transient immunity and automotive reliability. Compare against non-integrated isolators if board space is limited, as the built-in DC-DC converter reduces external component count. Ensure the 100 Mb/s data rate meets the bandwidth requirements of the target communication protocol.

Digital Isolators Part Context

This part belongs to the Si8824x family of digital isolators from Skyworks Solutions. The family focuses on providing robust isolation solutions for automotive and industrial applications. The SI88241 variant specifically integrates a DC-DC converter, distinguishing it from basic isolator models that require external isolated power rails. This integration simplifies design complexity and improves system reliability.

Digital Isolators Replacement Considerations

The SI88241BD-IS is listed as NRND (Not Recommended for New Designs). Verify functional equivalence with other SI8824x variants if sourcing alternatives. Ensure any substitute maintains the same SOIC-20 package dimensions and pinout configuration to fit existing footprints without redesign.