ISOW7843FDWER

Overview

The ISOW7843FDWER is a high-voltage, quad-channel reinforced digital isolator from Texas Instruments featuring integrated isolated power. It provides four independent channels with a 1/3 input-to-output configuration in a 16-SOIC package. The device supports data rates up to 100 Mbps and offers a common-mode transient immunity of 100 kV/µs. It operates on supply voltages between 3 V and 5.5 V with an isolation voltage rating of 5000 Vrms. Maximum propagation delay is 17.6 ns, and pulse width distortion is limited to 4.7 ns. The component functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates isolated power generation to eliminate the need for external bias supplies on the secondary side
• Provides reinforced insulation capabilities suitable for safety-regulated industrial applications
• Delivers high-speed signal transmission with low propagation delay and minimal pulse width distortion

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced electrical safety barriers
• Power metering circuits for energy monitoring
• Inverter drives and motor control interfaces

Procurement Notes

Verify the specific suffix FDWER corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 16-SOIC footprint matches the target PCB design constraints. Ensure compliance with RoHS3 standards if environmental regulations apply to the final product deployment. Check for any recent production change notices affecting material composition or manufacturing location.

Selection Notes

Select this component when a single-chip solution combining signal isolation and isolated power delivery is necessary. It is appropriate for designs requiring four isolated channels with high common-mode noise rejection. Consider this part over discrete solutions to reduce board space and simplify power management architecture in dense electronic assemblies.

Part Context

This device belongs to the ISOW784x family of high-performance digital isolators. It shares architectural similarities with the ISOW7840 but differs in channel configuration. The family utilizes capacitive coupling technology to achieve robust signal transmission across isolation barriers while maintaining low electromagnetic interference characteristics typical of modern interface ICs.

Replacement Considerations

ISOW7840FDWER serves as a functional substitute within the same series, though it features a different channel configuration.