ISO7840FDWW

Overview

The ISO7840FDWW is a quad-channel digital isolator from Texas Instruments, housed in a 16-SOIC package. It features capacitive coupling technology with a maximum insulation voltage of 5700 Vrms and supports data rates up to 100 Mb/s. The device operates on a supply voltage range of 2.25 V to 5.5 V, drawing a typical operating current of 23.8 mA. Key electrical specifications include a propagation delay of 11 ns, rise and fall times of 3.9 ns, and a pulse width distortion of 550 ps. It functions within a temperature range of -55°C to +125°C and offers high common-mode transient immunity.

Feature Summary

• Provides four unidirectional signal channels for robust digital isolation
• Utilizes capacitive coupling for high-speed data transmission up to 100 Mbps
• Supports wide supply voltage operation from 2.25 V to 5.5 V
• Ensures reliable performance across an extended industrial temperature range

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing reinforced digital isolation
• Power metering applications with high-voltage interfaces
• Inverter drives and motor control circuits

Procurement Notes

Verify the specific suffix 'WW' corresponds to the tube packaging configuration rather than reel or cut tape options. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly line. Ensure the SOIC-16 footprint matches your PCB design guidelines. Cross-reference the manufacturer part number against official distributors to avoid counterfeit components.

Selection Notes

Select this component when four isolated channels are required in a single package. Consider the 5700 Vrms insulation rating for safety-critical applications. Evaluate the 100 Mb/s data rate against system timing requirements. Check if the 16-SOIC package fits available board space constraints compared to smaller alternatives.

Part Context

This part belongs to the ISO7840 series of high-performance digital isolators. It complements variants like ISO7840FDW and ISO7840FDWWR by offering specific packaging configurations. The series is designed for applications demanding high reliability and noise immunity in electrically noisy environments.

Replacement Considerations

ISO7840DWWR is listed as a parameter-equivalent substitute.