SI8452AB-A-IS1R

Overview

The SI8452AB-A-IS1R is a general-purpose digital isolator from Skyworks Solutions, featuring five channels with three forward and two reverse directions. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and provides an insulation voltage of 2500 Vrms. The device supports data rates up to 1 Mb/s with a typical common-mode transient immunity of 25 kV/µs. It is housed in a 16-lead SOIC narrow package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation for digital signal transmission across multiple channels
• Features unidirectional signal flow with configurable forward and reverse paths
• Includes shutdown functionality to minimize power consumption during idle states

Applications

• Industrial automation control systems requiring signal isolation
• Power electronics monitoring and gate drive circuits
• General-purpose digital communication interfaces needing noise immunity

Procurement Notes

Verify the specific suffix IS1R confirms the reel packaging format and tape-and-reel quantity. Confirm the AB variant designation matches the required 2.5 kVrms isolation rating and 1 Mbps data rate specifications. Ensure the A grade temperature range aligns with your operational environment requirements before finalizing procurement orders.

Selection Notes

Select this component when high common-mode transient immunity is critical for system stability. The five-channel configuration reduces board space compared to using multiple discrete isolators. Verify that the 1 Mbps data rate meets the timing requirements of the target application interface protocols.

Part Context

This part belongs to the Skyworks SI8452 series of capacitive coupling digital isolators. It offers a compact solution for replacing traditional optocouplers in modern designs. The series is designed to provide reliable performance in electrically noisy environments while maintaining small form factor constraints.

Replacement Considerations

Check for direct pin-compatible alternatives within the same Skyworks family that may offer updated lifecycle status or different isolation ratings. Verify that any substitute maintains the 16-lead SOIC narrow footprint and compatible logic levels.