ISO7841FDWWR

Overview

The ISO7841FDWWR is a high-performance, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features four independent channels with a configuration of three forward and one reverse direction. The device supports data rates up to 100 Mb/s and offers a common-mode transient immunity (CMTI) of 100 kV/µs. It operates within a supply voltage range of 2.25 V to 5.5 V and maintains an insulation rating of 5700 Vrms. The component is housed in a 16-pin SOIC package and functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Provides reinforced isolation capabilities for safety-critical applications
• Integrates four independent channels with asymmetric directional support
• Delivers high common-mode transient immunity for noisy environments

Applications

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

Procurement Notes

Verify the specific suffix 'DWR' indicates tape-and-reel packaging when sourcing components. Confirm that the manufacturer is Texas Instruments to ensure authenticity. Check RoHS compliance status as indicated in official documentation. Ensure the order quantity aligns with reel specifications if bulk purchasing is required. Validate the part number against the latest datasheet revisions to avoid obsolete variants.

Selection Notes

Select this component when reinforced isolation ratings are mandatory for system safety standards. Choose the ISO7841FDWWR over non-reinforced variants if regulatory compliance requires higher dielectric strength. Consider the 3/1 channel configuration for applications needing more transmit than receive paths. Evaluate the 100 kV/µs CMTI specification for compatibility with high-dv/dt switching environments.

Part Context

This device belongs to the ISO7841 family of digital isolators from Texas Instruments. It shares architectural similarities with other members like the ISO7841FDW but differs in packaging format. The DWR suffix specifically denotes the tape-and-reel variant suitable for automated assembly processes. It complements unidirectional counterparts like the ISO7840 series by offering bidirectional flexibility.

Replacement Considerations

The ISO7841FDW serves as a tube-packaged alternative with identical electrical characteristics. Verify pinout compatibility before substituting between reel and tube formats. No direct functional substitutes exist within the same family that offer different channel counts.