ISO7731BDWR

Overview

The ISO7731BDWR is a triple-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It supports a data rate of 100 Mb/s with unidirectional signal transmission. The device operates on a supply voltage range of 2.25 V to 5.5 V and features an isolation rating of 5000 Vrms. Key electrical parameters include a propagation delay of 11 ns, maximum rise/fall times of 3.9 ns, and a pulse width distortion of 0.6 ns. It functions within a temperature range of -55°C to +125°C and consumes 13.1 mA of operating current.

Feature Summary

• Provides robust EMC performance with high surge capability up to 12.8 kV
• Ensures long-term reliability with over 30-year projected lifetime at 1500 VRMS working voltage
• Features wide supply range supporting level translation between 2.25 V and 5.5 V

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced insulation barriers
• Power metering applications for signal integrity

Procurement Notes

Verify the specific suffix BDWR corresponds to the SOIC-16 package and reel packaging configuration. Confirm that the component meets UL 1577 certification requirements for your specific safety standards. Ensure compatibility with the required isolation voltage ratings for your circuit design before procurement.

Selection Notes

Select this component when triple-channel isolation is required with a 100 Mbps data rate. It is suitable for designs needing 5000 VRMS isolation in a standard SOIC footprint. Consider the 2.25 V to 5.5 V supply range for flexibility in logic interface levels.

Part Context

This part belongs to the ISO773x family of triple-channel digital isolators. It utilizes capacitive coupling technology for signal transmission across the isolation barrier. The series is designed for basic or reinforced insulation depending on the specific package and rating.

Replacement Considerations

Check for ISO7731 variants with different package options such as DBQ if space constraints differ. Verify equivalent parts from other manufacturers offering similar 100 Mbps triple-channel specifications.