ISO7841DWR

Overview

The ISO7841DWR is a quad-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology to provide electrical isolation between circuits. It features a 5700 Vrms insulation voltage rating and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 2.25 V to 5.5 V and includes three unidirectional forward channels and one reverse channel. It exhibits a propagation delay of 11 ns and functions reliably across an extended temperature range from -55°C to +125°C. Packaged in a 16-pin SOIC (DW) format on a reel for surface-mount assembly.

Feature Summary

• Provides reinforced isolation via capacitive coupling technology with high dielectric strength
• Supports bidirectional or unidirectional signal transmission with flexible channel configuration
• Enables wide supply voltage translation between 2.25 V and 5.5 V domains
• Maintains signal integrity at high data rates with low propagation delay

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering and energy management interfaces
• Inverter drives and motor control applications

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 ordering part number matches the required channel directionality and isolation ratings for your design.

Selection Notes

Select this component when high channel count and robust isolation are required in a compact footprint. Consider the 3/1 channel split if feedback paths are needed alongside multiple input signals. Evaluate power consumption relative to system constraints, as quiescent current varies with logic state transitions. Ensure the SOIC-16 package fits the available PCB area.

Part Context

Part of the ISO784x family of high-performance digital isolators designed for demanding industrial and commercial environments. This series emphasizes reliability and noise immunity through advanced capacitive isolation architecture. It serves as a critical interface component for protecting sensitive electronics from high-voltage transients.

Replacement Considerations

Check for pin-compatible alternatives within the same isolation family. Verify that substitute devices meet the same 5700 Vrms insulation rating and 100 Mbps speed requirements. Ensure thermal performance and package dimensions remain consistent for direct board replacement.