ISOW7744DFMR

Overview

The ISOW7744DFMR is a quad-channel digital isolator from Texas Instruments, housed in a 20-pin SOIC (DFM) package. It features a data rate of 100 Mb/s and operates within a supply voltage range of 2.97 V to 5.5 V. The device provides galvanic isolation with an insulation voltage of 5000 Vrms and supports unidirectional signal transmission. Key electrical parameters include a propagation delay of 10.7 ns, rise time of 3.6 ns, and fall time of 3.5 ns. It functions reliably across a temperature range of -40°C to +125°C with a typical operating supply current of 3.6 mA.

Feature Summary

• Integrates a low-emissions, low-noise DC-DC converter optimized for CISPR 32 and EN standards
• Provides reinforced galvanic isolation for four independent channels
• Supports shutdown functionality for power management

Applications

• Industrial automation systems requiring high-speed isolated communication
• Medical equipment needing reinforced isolation barriers
• Power metering applications with integrated power conversion

Procurement Notes

Verify the specific suffix DFMR confirms the SOIC-20 package and tape-and-reel packaging format. Ensure compatibility with the required isolation voltage ratings and thermal management capabilities for the target operating environment. Confirm that the integrated DC-DC converter meets the electromagnetic interference requirements of the final assembly.

Selection Notes

Select this component when four isolated channels are required alongside an integrated power supply solution. It is suitable for designs prioritizing low electromagnetic emissions and high-speed data integrity. Consider the 20-pin SOIC footprint and thermal dissipation characteristics during layout planning.

Part Context

This part belongs to the ISOW774x family of quad-channel digital isolators. It distinguishes itself by combining signal isolation with an integrated DC-DC converter, reducing external component count compared to discrete solutions.

Replacement Considerations

The ISOW7744FDFMR is a confirmed substitute within the same series offering identical channel configuration and package type.