ISO6740FDWR

Overview

The ISO6740FDWR is a general-purpose, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features four forward channels with zero reverse channels, operating at a data rate of 50 Mb/s. The device provides an insulation voltage of 5000 Vrms using capacitive coupling technology. It supports a supply voltage range from 1.71 V to 5.5 V and operates within a temperature range of -40°C to +125°C. Packaged in a 16-pin SOIC (DW) format, it exhibits a propagation delay of 11 ns and pulse width distortion of 0.2 ns.

Feature Summary

• Provides reinforced isolation for safety-critical applications
• Supports unidirectional signal transmission across four channels
• Compatible with standard logic families including SPI, UART, CAN, RS-232, and RS-485

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety barriers
• Power metering and energy monitoring circuits
• Inverter drives and motor control interfaces

Procurement Notes

Verify the specific suffix FDWR corresponds to the SOIC-16 package and tape-and-reel shipping configuration. Confirm that the component meets RoHS standards and humidity sensitivity level requirements for your assembly process. Ensure the ordering information matches the exact channel configuration and isolation rating specified in the official datasheet before finalizing procurement.

Selection Notes

Select this component when reinforced isolation ratings are mandatory for safety compliance. It is suitable for designs requiring low power consumption alongside high noise immunity. Consider the 1.71 V minimum supply voltage for compatibility with low-voltage logic domains. Evaluate the 50 Mb/s data rate against system throughput requirements to ensure adequate performance margins.

Part Context

This part belongs to the ISO674x family of general-purpose digital isolators. It shares the SOIC-16 footprint with other variants like the ISO6741 and ISO6742 but differs in channel directionality and specific electrical characteristics. The family is designed to replace traditional transformer and optocoupler solutions in space-constrained industrial and medical PCB layouts.

Replacement Considerations

Direct replacements include ISO6741FDWR for bidirectional capability or ISO6742FDWR for mixed directionality. Verify pinout compatibility and isolation voltage ratings when substituting with older generations or competitor parts to maintain system safety integrity.