ISO6721RBDR

Overview

The ISO6721RBDR is a general-purpose, dual-channel digital isolator from Texas Instruments featuring a reverse pinout configuration. It operates with a data rate of 50 Mbps and supports logic voltages down to 1.8V. The device provides 3000 Vrms isolation voltage and a common-mode transient immunity (CMTI) of 100 kV/µs. It functions within a supply voltage range of 1.71 V to 5.5 V and maintains operation across an extended temperature range of -40°C to +125°C. Packaged in an 8-SOIC surface-mount case, it consumes 5.2 mA of operating current.

Feature Summary

• Reverse pinout design facilitates direct replacement for legacy single-channel isolators without PCB layout changes.
• High common-mode transient immunity ensures reliable signal transmission in electrically noisy environments.
• Supports low-voltage logic interfaces including 1.8V systems for modern embedded applications.

Applications

• CAN bus communication interfaces
• RS-232 and RS-485 serial communication links
• SPI peripheral connections

Procurement Notes

Verify the specific suffix 'BDR' confirms the SOIC-8 package and tape-and-reel shipping format. Confirm RoHS compliance status as indicated in official documentation. Ensure the reverse pinout requirement aligns with the target circuit design to avoid compatibility issues with standard pinout components.

Selection Notes

Select this component when bidirectional or unidirectional isolation is required for high-speed digital signals up to 50 Mbps. The reverse pinout feature is critical for upgrading existing designs that utilize older single-channel isolators. Consider the 1.8V logic support if interfacing with low-power microcontrollers or FPGAs.

Part Context

This part belongs to the ISO672x family of basic dual-channel digital isolators. It shares the same functional core as the ISO6721R but specifies the reel packaging variant. The family is designed for robust EMC performance in industrial and automotive settings.

Replacement Considerations

Public confirmed substitute part numbers include ISO6721RFBDR.

FAQ

Does the ISO6721RBDR support bidirectional data transfer?

Yes, the device supports bidirectional data transfer on its channels.

What is the maximum common-mode transient immunity rating?

The ISO6721RBDR has a CMTI rating of 100 kV/µs.