ISOW7841FDWE

Overview

The ISOW7841FDWE is a high-performance, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features a unidirectional signal path with three forward channels and one reverse channel. The device supports data rates up to 100 Mb/s and provides an insulation voltage of 5000 Vrms. It operates within a supply voltage range of 3 V to 5.5 V, consuming 54 mA of operating power. Key electrical parameters include a propagation delay of 13 ns, rise/fall times of 4 ns, and pulse width distortion of 600 ps. It functions in temperatures from -40°C to +125°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates capacitive coupling for signal isolation and magnetic coupling for the internal DC-DC converter.
• Features a shutdown pin to reduce power consumption during inactive periods.
• Provides reinforced insulation capabilities suitable for safety-critical applications.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced isolation barriers
• Power metering circuits for energy measurement

Procurement Notes

Verify the specific suffix 'FDWE' corresponds to the tube packaging format when ordering. Confirm that the unidirectional configuration (3/1 channels) aligns with the system design requirements. Ensure the SOIC-16 footprint matches the PCB layout specifications. Check RoHS compliance documentation if required by regional regulations. Validate the operating temperature range against the environmental conditions of the final application.

Selection Notes

Select this component when a unidirectional signal flow is sufficient for the isolation barrier. The integrated DC-DC converter eliminates the need for external isolated power supplies on the secondary side. Consider the 5000 Vrms rating for high-voltage separation needs. Evaluate the 100 Mb/s data rate against the communication speed requirements of the interface being isolated.

Part Context

This part belongs to the ISOW7841 series of reinforced digital isolators. It shares the same core technology and performance characteristics as other variants in the family, such as ISOW7841DWE and ISOW7841FDWER. The primary distinction lies in the packaging type and reel quantity, while maintaining identical electrical specifications and functional capabilities across the series.

Replacement Considerations

ISOW7841DWE offers the same electrical specifications in a tube package. ISOW7841FDWER provides identical performance in a tape-and-reel format. Verify pinout compatibility and thermal characteristics before substituting any variant within the ISOW7841 family.