ISO6721FBDR

Overview

The ISO6721FBDR is a general-purpose dual-channel digital isolator from Texas Instruments, housed in an 8-pin SOIC package. It features unidirectional signal transmission with a data rate of 50 Mb/s and a propagation delay of 11 ns. The device supports a supply voltage range of 1.71 V to 5.5 V and operates within a temperature range of -40°C to +125°C. It provides 3000 Vrms isolation via capacitive coupling and offers a common-mode transient immunity of 100 kV/µs.

Feature Summary

• Provides robust electromagnetic compatibility performance suitable for noisy industrial environments
• Supports low-voltage logic interfaces including 1.8 V operation for modern system integration
• Delivers high-speed bidirectional data transfer capabilities with minimal signal distortion

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power metering applications with high voltage differences

Procurement Notes

Verify the specific suffix 'FBDR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the SOIC-8 footprint matches the design board layout constraints. Ensure the component meets the necessary RoHS compliance standards for the target market regulations before finalizing procurement orders.

Selection Notes

Select this component when unidirectional signal isolation is required between circuits operating at different ground potentials. It is appropriate for designs needing moderate data rates up to 50 Mbps with high noise immunity. Consider the thermal characteristics and power consumption if multiple units are placed in close proximity on the PCB.

Part Context

This part belongs to the ISO672x family of digital isolators designed for general-purpose applications. The family includes variants with bidirectional channels and different insulation ratings. These devices utilize capacitive coupling technology to provide electrical isolation without magnetic components, offering a compact solution for signal integrity.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio that may offer updated packaging or enhanced isolation ratings. Verify functional equivalence regarding channel directionality and data speed requirements before substituting.