ISO7341CDWR

Overview

The ISO7341CDWR is a quad-channel reinforced digital isolator from Texas Instruments, housed in a 16-SOIC package. It provides galvanic isolation with a rating of 3000 Vrms and supports data rates up to 25 Mbps. The device features a 3/1 channel configuration (three forward, one reverse) with unidirectional signal paths. Operating voltage ranges from 3 V to 5.5 V, with typical supply currents of 5 mA and 7.8 mA for the respective sides. Key electrical parameters include a maximum propagation delay of 58 ns, pulse width distortion of 4 ns, and common-mode transient immunity of 25 kV/µs. It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Provides reinforced galvanic isolation between input and output sides
• Integrates noise filters on inputs to enhance signal integrity
• Supports high common-mode transient immunity for robust EMC performance

Applications

• Industrial communication interfaces
• Medical equipment signal isolation
• Power metering systems

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with system voltage levels and thermal requirements. Check for moisture sensitivity handling instructions during storage and assembly. Confirm RoHS compliance status for regulatory adherence.

Selection Notes

Select this component when reinforced isolation ratings are required for safety-critical applications. Consider the 3/1 channel layout for asymmetric data flow needs. Evaluate power consumption constraints as it lacks integrated isolated power supplies. Compare propagation delays against system timing budgets.

Part Context

This part belongs to the ISO7341C series of digital isolators. It utilizes capacitive coupling technology for signal transmission across the isolation barrier. The device is designed to replace optocouplers in many applications, offering higher reliability and lower power consumption.

Replacement Considerations

Official substitutes include ISO7241CDWR and ISO7231CDWR. Verify pinout compatibility and isolation voltage ratings before substitution. Ensure equivalent data rate and propagation delay specifications match the design requirements.