TIISO7721FDWR

Overview

The ISO7721FDWR is a high-performance, dual-channel digital isolator providing 5000Vrms isolation in a wide-body SOIC package. Utilizing capacitive coupling technology, it supports data rates up to 100 Mbps with high common-mode transient immunity (CMTI) of 85kV/us. This device features one forward and one reverse channel, making it ideal for bidirectional communication buses where signal integrity and safety isolation are required.

Why Choose This Part

This isolator offers excellent timing performance with a low typical propagation delay of 11 ns and high EMC robustness. It operates across a wide supply range of 2.25V to 5.5V, allowing for seamless level translation between different logic voltage rails. The device is highly efficient, consuming only 1.7 mA per channel at 1 Mbps while maintaining a wide operating temperature range of -55C to 125C.

Applications

Getting Started

To evaluate this device, use the ISO7721DWEVM evaluation module which provides a platform for testing timing and transient immunity. Ensure that 0.1uF bypass capacitors are placed as close as possible to the VDD pins on both sides of the isolation barrier. When designing the PCB layout, maintain the required creepage and clearance distances under the IC to preserve the 5000Vrms isolation rating.

ISO7721 Family

Comparing specs that differ across variants. The current part is highlighted.

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