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ISO7721FBDWR

TIISO7721FBDWR

Texas Instruments
CAN, RS232, RS485 Digital Isolator 5000Vrms 2 Channel 100Mbps 85kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
Active13,508 in stock
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Overview

The ISO7721FBDWR is a high-performance, dual-channel digital isolator providing 5000Vrms isolation in a 16-SOIC package. It features one forward and one reverse channel, supporting data rates up to 100Mbps with high electromagnetic immunity and low emissions. This device is designed to provide galvanic isolation for various digital interfaces including CAN, RS-485, and SPI.

Why Choose This Part

This isolator offers a high CMTI of 85kV/us and low propagation delay of 16ns, ensuring reliable communication in noisy environments. It operates across a wide supply range of 2.25V to 5.5V and consumes only 1.6mA per channel at 1Mbps (3.3V supply), making it efficient for power-constrained designs.

Applications

Industrial Automation
Provides signal isolation for PLC systems and factory automation controllers to protect low-voltage logic from high-voltage transients.
Motor Control
Isolates gate drive signals and feedback loops in motor inverter systems to prevent ground loops and noise interference.
Grid Infrastructure
Used in solar inverters and power supplies to maintain signal integrity across isolation barriers in high-power environments.
Medical Equipment
Ensures safety and signal isolation in medical instrumentation requiring high-voltage protection for sensitive electronics.

Key Specifications

Type CAN, RS232, RS485
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

When designing with the ISO7721FBDWR, place 0.1uF bypass capacitors as close as possible to both VDD1 and VDD2 pins. Ensure the creepage and clearance requirements of your specific isolation standard are met by following the 16-DW package layout guidelines. Evaluation can be performed using the ISO7721EVM or similar TI digital isolator evaluation modules.

ISO7721 Family

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

Part Number Type Package Voltage - Isolation Stock
ISO7721FBDWR (this part) CAN, RS232, RS485 SOIC-16 5000V 13,508
ISO7721FDWR General Purpose SOIC-16 5000V 14,944
ISO7721DWR General Purpose SOIC-16 5000V 6,311
ISO7721FDR General Purpose SOIC-8 3000V 1,282
ISO7721DR General Purpose SOIC-8 3000V 1,826
Also available as: ISO7721BDWR

Also Consider

ISO7721BDWR TITexas Instruments - Similar 2-channel isolator but with a default High output state instead of the default Low state provided by the F-suffix version.