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ISO6731-Q1

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Automotive, general-purpose, triple-channel, 2/1, digital isolator

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Data sheet

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NEW ISO6441-Q1 ACTIVE Automotive, noise-immune, quad-channel, 3 forward/1 reverse, digital isolator Cost-effective solution; 250kV/us CMTI and 150 Mbps that supports most digital isolation applications

ISO6731-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Integrated isolated power No Number of channels 3 Forward/reverse channels 2 forward / 1 reverse Data rate (max) (Mbps) 50 Protocols GPIO, PWM, UART Propagation delay time (typ) (ns) 11 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Surge isolation voltage (VIOSM) (kVPK) 10 CMTI (min) (kV/µs) 100 Default output High, Low Creepage (min) (mm) 8 Current consumption per channel (DC) (typ) (mA) 1 Current consumption per channel (1 Mbps) (typ) (mA) 1.65 Supply voltage (min) (V) 1.71 Supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Transient isolation voltage (VIOTM) (VPK) 7071 Clearance (min) (mm) 8
Rating Automotive Integrated isolated power No Number of channels 3 Forward/reverse channels 2 forward / 1 reverse Data rate (max) (Mbps) 50 Protocols GPIO, PWM, UART Propagation delay time (typ) (ns) 11 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Surge isolation voltage (VIOSM) (kVPK) 10 CMTI (min) (kV/µs) 100 Default output High, Low Creepage (min) (mm) 8 Current consumption per channel (DC) (typ) (mA) 1 Current consumption per channel (1 Mbps) (typ) (mA) 1.65 Supply voltage (min) (V) 1.71 Supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Transient isolation voltage (VIOTM) (VPK) 7071 Clearance (min) (mm) 8
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design: ISO6731-Q1
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to +125°C ambient operating temperature range
  • Meets VDA320 isolation requirements
  • 50 Mbps data rate
  • Robust isolation barrier:
    • High lifetime at 1500 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-Q1) and low (ISO6731F-Q1) options
  • 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:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1
    • GB 4943.1-2011 certifications (pending)
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design: ISO6731-Q1
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to +125°C ambient operating temperature range
  • Meets VDA320 isolation requirements
  • 50 Mbps data rate
  • Robust isolation barrier:
    • High lifetime at 1500 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-Q1) and low (ISO6731F-Q1) options
  • 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:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1
    • GB 4943.1-2011 certifications (pending)

The ISO6731-Q1 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-Q1 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-Q1 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 CAN and LIN from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO6731-Q1 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO6731-Q1 device is available in a 16-pin SOIC wide-body (DW) package and is a pin-to-pin upgrade to the older generations.

The ISO6731-Q1 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-Q1 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-Q1 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 CAN and LIN from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO6731-Q1 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO6731-Q1 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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* Data sheet ISO6731-Q1 General-Purpose Triple-Channel Automotive Digital Isolator with Robust EMC datasheet (Rev. A) PDF | HTML 17 Mar 2021
Certificate CSA Certificate for ISO67xxDW (Rev. B) 07 May 2026
Certificate TUV Certificate for Isolation Devices (Rev. M) 07 May 2026
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 07 May 2026
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AA) 10 Mar 2026
Certificate CQC Certificate for ISOxxDWx (Rev. K) 18 Aug 2025
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Functional safety information ISO6731-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 22 Feb 2021

Design & development

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Evaluation board

DIGI-ISO-EVM — Universal digital isolator evaluation module

DIGI-ISO-EVM is an evaluation module (EVM) used to evaluate any of the TI single-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin narrow-body SOIC (D), 8-pin wide-body SOIC (DWV), 16-pin wide-body SOIC (DW), 16-pin ultra- (...)

User guide: PDF | HTML
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Evaluation board

ISO6741DWEVM — ISO67xx general-purpose, triple- or quad-channel digital isolator evaluation module

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.
User guide: PDF | HTML
Not available on TI.com
Simulation model

ISO6731 PSpice Transient Model

SLLM483.ZIP (887 KB) - PSpice Model
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SOIC (DW) 16 Ultra Librarian
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