ISO7841DW

Overview

The ISO7841DW is a high-performance, reinforced quad-channel digital isolator from Texas Instruments. It features four independent channels configured as three forward and one reverse path. The device utilizes capacitive coupling technology to provide an insulation voltage of 5700 Vrms. It supports data rates up to 100 Mb/s with a propagation delay of 11 ns. Operating on supply voltages between 2.25 V and 5.5 V, it draws power currents of 9.2 mA or 19 mA depending on the channel configuration. The component operates within a temperature range of -55°C to +125°C and is housed in a SOIC-16 package.

Feature Summary

• Provides reinforced isolation for safety-critical applications
• Integrates four independent digital channels for signal transmission
• Utilizes capacitive coupling for reliable noise immunity

Applications

• Reinforced-isolated analog input chains
• Industrial automation systems requiring galvanic isolation
• Medical equipment with strict isolation standards

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined by the manufacturer. Confirm that the ordered variant matches the required insulation ratings and channel configurations for your design.

Selection Notes

Select this component when reinforced isolation ratings are mandatory rather than basic isolation. Consider the 3/1 channel split if bidirectional communication is not required on all lines. Evaluate the SOIC-16 footprint constraints and thermal dissipation requirements relative to the 200 mW power dissipation rating.

Part Context

This part belongs to the ISO7841 series of digital isolators designed for high-voltage isolation needs. It serves as a robust interface solution for separating low-voltage control circuits from high-voltage power stages. The series emphasizes safety compliance and signal integrity in electrically noisy environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.