ISO7731DWR

Overview

The ISO7731DWR is a reinforced triple-channel digital isolator manufactured by Texas Instruments. It features a 16-SOIC package with a 0.295-inch width. The device supports a data rate of 100Mbps and offers a common-mode transient immunity (CMTI) of 85kV/µs. It provides an isolation rating of 5000Vrms per UL 1577 standards. The input side configuration is 3 channels to 0 channels on the output side. Operating voltage ranges from 2.25V to 5.5V, with a maximum propagation delay of 16ns for both low-to-high and high-to-low transitions.

Feature Summary

• Reinforced insulation barrier designed for long-term reliability at specified working voltages
• High-speed signal transmission capability supporting up to 100Mbps data rates
• Robust electromagnetic compatibility performance with high common-mode transient immunity

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation barriers
• Power electronics interfaces for motor control applications

Procurement Notes

Verify the specific suffix 'DWR' corresponds to the 16-SOIC package and tape-and-reel packaging format. Confirm that the 5000Vrms isolation rating aligns with your system's safety certification requirements under UL 1577 standards. Ensure the operating temperature range meets your environmental specifications.

Selection Notes

Select this component when three isolated channels are required in a single package. Consider the 16-SOIC footprint for PCB layout constraints. Evaluate the 100Mbps speed against system timing requirements. Verify that the 2.25V to 5.5V supply range matches available power rails in the design.

Part Context

This part belongs to the ISO773x family of triple-channel digital isolators from Texas Instruments. It utilizes capacitive coupling technology for signal transmission across the isolation barrier. The device is designed to replace bulky magnetic couplers while providing higher integration and lower power consumption in modern electronic designs.

Replacement Considerations

Check for direct pin-compatible alternatives within the ISO773x series. Verify if other manufacturers offer equivalent 3-channel isolators with similar CMTI ratings. Ensure any substitute maintains the same reinforced isolation classification for safety compliance.