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Product details

Parameters

Integrated isolated power No Number of channels (#) 3 Forward/reverse channels 2/1 Isolation rating (Vrms) 5000 Data rate (Max) (Mbps) 50 Rating Catalog Surge voltage capability (Vpk) 10000 Current consumption per channel (DC) (Typ) (mA) 1 Current consumption per channel (1 Mbps) (Typ) (mA) 1.65 Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable Default output High, Low Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 1.71 Propagation delay (Typ) (ns) 11 open-in-new Find other Digital isolators

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 open-in-new Find other Digital isolators

Features

  • 50 Mbps data rate
  • Robust isolation barrier:
    • High lifetime at 1060 VRMS working voltage
    • Up to 5000 VRMS isolation rating
    • Up to 10 kV surge capability
    • ±75 kV/µs typical CMTI
  • Wide supply range: 1.71 V to 1.89 V and 2.25 V to 5.5 V
  • 1.71 V to 5.5 V level translation
  • Default output high (ISO6731) and low (ISO6731F) options
  • Wide temperature range: –40°C to 125°C
  • 1.6 mA per channel typical at 1 Mbps
  • Low propagation delay: 11 ns typical
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
    • Low emissions
  • Wide-SOIC (DW-16) Package
  • Safety-Related Certifications (pending):
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program (completed)
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 (completed) and GB 4943.1-2011 certifications

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Description

The ISO6731 device is a high-performance, triple-channel digital isolators ideal for cost-sensitive applications requiring up to 5000 VRMS isolation ratings per UL 1577. This device is also certified by VDE, TUV, CSA, and CQC.

The ISO6731 devics provides high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by TI’s double capacitive silicon dioxide (SiO2) insulation barrier. This device comes with enable pins which can be used to put the respective outputs in high impedance for multi-master driving applications. The ISO6731 device has two forward and one reverse-direction channels. In the event of input power or signal loss, the default output is high for the device without suffix F and low for the device with suffix F. See Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, this device helps prevent noise currents on data buses, such as UART, SPI, RS-485, RS-232, and CAN from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO6731 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO6731 device is available in a 16-pin SOIC wide-body (DW) package and is a pin-to-pin upgrade to the older generations.

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Technical documentation

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Type Title Date
* Data sheet ISO6731 General-Purpose Triple-Channel Digital Isolator with Robust EMC datasheet (Rev. A) Mar. 17, 2021
Functional safety information ISO6731-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Feb. 22, 2021
More literature UL Certification (Rev. O) Feb. 03, 2021
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. A) Dec. 07, 2020
Technical article How to select the right digital isolator for your design Oct. 21, 2020
Application note How to Replace Optocouplers with Digital Isolators in Standard Interface Circuit Aug. 31, 2020
User guide ISO67xx Triple- and Quad-Digital Isolator Evaluation Module Jul. 30, 2020
Technical article Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
Technical article Staying on budget: How digital isolators are transforming field transmitters May 24, 2019
Technical article What are isolated digital inputs? Mar. 08, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
29
Description

DIGI-ISO-EVM is an evaluaiton module used to evaluate any of the TI signle-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin NB SOIC (D), 8-pin WB SOIC (DWV), 16-pin WB SOIC (DW), 16-pin ultra WB SOIC (DWW) and 16-pin QSOP (...)

Features
  • Any TI digital isolator can be evaluated
  • Supports single-channel, dual-channel, triple-channel, quad-channel and six-channel devices
  • Supports D, DWV, DW, DWW and DBQ packages
  • Various Berg pins provided for easy testing
EVALUATION BOARD Download
document-generic User guide
49
Description
ISO6741DWEVM is an evaluation module used to evaluate the low speed, general purpose, triple- or quad channel-digital isolator ISO67xx in 16-Pin WB SOIC package (package code-DW). The EVM features enough test points and jumper options for one to evaluate the device with minimal external components.
Features
  • Low speed, triple- and quad-channel digital isolator
  • Wide supply and level translation range: 1.71 V to 5.5 V
  • High signaling rate: up to 50 Mbps
  • Isolation barrier life > 40 Years

Design tools & simulation

SIMULATION MODEL Download
SLAM353.ZIP (92 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

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