ISOW7844DWER

Overview

The ISOW7844DWER is a quad-channel reinforced digital isolator manufactured by Texas Instruments, housed in a 16-SOIC package. It features integrated isolated power supplies on the output side, enabling a 0/4 channel configuration where inputs are powered from the primary side. The device supports data rates up to 100Mbps with a common-mode transient immunity of 100kV/µs. Operating voltages range from 3V to 5.5V, and it functions within a temperature range of -40°C to 125°C.

Feature Summary

• Integrated isolated power supply eliminates the need for secondary-side biasing components
• Reinforced insulation rating ensures compliance with global safety standards
• High common-mode transient immunity protects against noise in industrial environments

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power metering and energy monitoring
• Motor drive gate driver interfaces

Procurement Notes

Verify the specific suffix 'DWER' corresponds to the tape-and-reel packaging variant rather than the tube version. Confirm that the application requires an integrated isolated power supply, as this distinguishes the component from standard isolators. Ensure the design accounts for the thermal characteristics of the SOIC-16 package under continuous operation at maximum ambient temperatures.

Selection Notes

Select this component when bidirectional communication is not required, as the channels are unidirectional. The integrated power supply makes it suitable for space-constrained designs lacking secondary power rails. Compare propagation delay specifications against system timing requirements to ensure signal integrity across the isolation barrier.

Part Context

This part belongs to the ISOW784x family of digital isolators from Texas Instruments. The family utilizes capacitive coupling technology to provide galvanic isolation. The '44' designation indicates four channels with integrated power on the output side, differentiating it from variants with different channel counts or power configurations.

Replacement Considerations

ISOW7842DWER is a dual-channel alternative within the same family. ISOW7841DWER offers a single-channel option. These parts share similar electrical characteristics and pinouts but differ in channel count.