ISO7831FDWR

Overview

The ISO7831FDWR is a triple-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It operates on a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. The device features unidirectional signaling with two forward channels and one reverse channel. It provides an insulation voltage of 5700 Vrms and exhibits a propagation delay of 11 ns. Operating temperatures span from -55°C to +125°C, with rise and fall times of 3.9 ns.

Feature Summary

• Capacitive coupling technology enables high-speed signal transmission across isolation barriers.
• Wide operating temperature range ensures reliability in extreme industrial environments.
• Unidirectional configuration simplifies interface design for specific signal flow requirements.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced insulation
• Power metering circuits for accurate signal separation

Procurement Notes

Verify the suffix FDWR corresponds to the SOIC-16 tape-and-reel packaging format. Confirm RoHS compliance status through official manufacturer documentation before procurement. Ensure handling procedures account for moisture sensitivity classification during storage and assembly processes.

Selection Notes

Select this component when triple-channel isolation is required within a single package footprint. The 100 Mbps rate suits moderate-speed digital interfaces. Consider the 5700 Vrms rating for applications demanding robust dielectric strength between isolated domains.

Part Context

This part belongs to the ISO7831 family of high-performance digital isolators. It shares architectural similarities with other members like the ISO7841 but differs in channel count. The series emphasizes high CMTI and low power consumption for modern electronic designs.

FAQ

What is the maximum common-mode transient immunity?

The device offers a common-mode transient immunity of 70 kV/µs.

Does the ISO7831FDWR include a shutdown feature?

No, this specific variant does not include a shutdown pin or function.