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ISO7721DWR

TIISO7721DWR

Texas Instruments
General Purpose Digital Isolator 5000Vrms 2 Channel 100Mbps 85kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
NRND6,311 in stock

Overview

The ISO7721DWR is a high-performance, dual-channel digital isolator providing 5000Vrms isolation in a wide-body SOIC-16 package. It utilizes TI's capacitive silicon dioxide (SiO2) barrier technology to enable high-speed data transmission up to 100Mbps with excellent electromagnetic immunity. This device features one forward and one reverse channel, making it ideal for bidirectional control signaling in harsh environments.

Why Choose This Part

It offers a high common-mode transient immunity (CMTI) of 100kV/us, ensuring reliable data integrity in electrically noisy environments. The device is highly efficient with a low power consumption of approximately 1.7mA per channel at 1Mbps and supports a wide logic supply range from 2.25V to 5.5V for flexible level translation.

Applications

Industrial Fieldbus
Isolating RS-485, CAN, or Profibus communication lines to prevent ground loops in factory automation.
Motor Control Inverters
Providing gate driver isolation and feedback signal protection in high-voltage motor drive systems.
Battery Management Systems (BMS)
Safely bridging the isolation barrier between high-voltage battery stacks and low-voltage monitoring microcontrollers.
Medical Equipment
Achieving reinforced isolation requirements for patient safety in diagnostic and monitoring devices.

Key Specifications

Type General Purpose
Data Rate 100Mbps
Technology Capacitive Coupling
Channel Type Unidirectional
Mounting Type Surface Mount
Isolated Power No
Package / Case 16-SOIC (0.295", 7.50mm Width)
Voltage - Supply 2.25V ~ 5.5V
Number of Channels 2
Voltage - Isolation 5000Vrms
Operating Temperature -55degC ~ 125degC
Inputs - Side 1/Side 2 1/1
Rise / Fall Time (Typ) 1.8ns, 1.9ns
Supplier Device Package 16-SOIC
Pulse Width Distortion (Max) 4.9ns
Propagation Delay tpLH / tpHL (Max) 16ns, 16ns
Common Mode Transient Immunity (Min) 85kV/us

Getting Started

To evaluate this component, use the ISO7721EVM evaluation module which provides easy access to all pins via headers and SMA connectors for signal integrity testing. Ensure that 0.1uF bypass capacitors are placed as close as possible to the VCC pins on both the primary and secondary sides to maintain stability during high-speed switching.

ISO7721 Family

Part NumberDifferenceStock
ISO7721FDWR FDWR 16,449
ISO7721FBDWR FBDWR 7,236
ISO7721BDWR BDWR 1,263