SI88343ED-ASR

Digital Isolators Overview

The SI88343ED-ASR is a general-purpose digital isolator from the Si88343 series, manufactured by Skyworks Solutions. It features four channels with one forward and three reverse unidirectional paths, housed in a 24-pin SOIC package. The device operates on a supply voltage between 3 V and 5.5 V, drawing 9.5 mA of working current. It supports data rates up to 100 Mb/s with a propagation delay of 18 ns and rise/fall times of 2.5 ns. Key electrical specifications include an insulation voltage of 5000 Vrms, a common-mode transient immunity of 40 kV/µs, and a pulse width distortion of 4.5 ns. It functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides galvanic isolation for digital signal transmission across noisy environments
• Integrates four independent channels with asymmetric forward and reverse configurations
• Ensures high-speed data integrity with low propagation delay and minimal pulse width distortion
• Supports wide operating voltage ranges and extended industrial temperature stability

Digital Isolators Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing high-voltage safety barriers
• Power electronics interfaces for motor control and inverters
• Communication gateways isolating microcontrollers from peripheral buses

Digital Isolators Procurement Notes

Verify the specific suffix ASR indicates reel packaging when sourcing this component. Confirm that the manufacturer designation matches Skyworks Solutions Inc. to ensure authenticity. Check for RoHS compliance documentation as required by project standards. Ensure the SOIC-24 footprint aligns with existing PCB layouts before finalizing procurement orders.

Digital Isolators Selection Notes

Select this model when a unidirectional four-channel isolator is required without shutdown functionality. Compare against the SI88343ED-AS variant if tube packaging is preferred over reels. Consider the SI88443ED-ASR only if a different pinout or package width is acceptable. Verify that the 40 kV/µs CMTI meets the noise immunity requirements of the target application circuit.

Digital Isolators Part Context

This component belongs to the Si88343 family of digital isolators designed for general-purpose applications. It utilizes capacitive coupling technology to achieve isolation. The part is distinct from variants like the ISR which includes integrated DC-DC converters. It serves as a standalone isolation solution for standard logic level translation tasks.

Digital Isolators Replacement Considerations

The SI88343ED-AS is a direct physical substitute differing only in tube packaging instead of reels. The SI88443ED-ASR shares similar electrical characteristics but uses a 20-pin SOIC package. Verify pin compatibility and board space constraints before substituting these alternatives.