Product details

Rating Automotive Integrated isolated power No Isolation rating Basic, Reinforced Number of channels 3 Forward/reverse channels 2 forward / 1 reverse Default output High, Low Data rate (max) (Mbps) 100 Surge isolation voltage (VIOSM) (VPK) 6400, 12800 Transient isolation voltage (VIOTM) (VPK) 4242, 8000 Withstand isolation voltage (VISO) (Vrms) 3000, 5000 CMTI (min) (V/µs) 85000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.25 Propagation delay time (typ) (µs) 0.0107 Current consumption per channel (DC) (typ) (mA) 0.97 Current consumption per channel (1 Mbps) (typ) (mA) 1.53 Creepage (min) (mm) 3.7, 8 Clearance (min) (mm) 3.7, 8 TI functional safety category Functional Safety-Capable
Rating Automotive Integrated isolated power No Isolation rating Basic, Reinforced Number of channels 3 Forward/reverse channels 2 forward / 1 reverse Default output High, Low Data rate (max) (Mbps) 100 Surge isolation voltage (VIOSM) (VPK) 6400, 12800 Transient isolation voltage (VIOTM) (VPK) 4242, 8000 Withstand isolation voltage (VISO) (Vrms) 3000, 5000 CMTI (min) (V/µs) 85000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.25 Propagation delay time (typ) (µs) 0.0107 Current consumption per channel (DC) (typ) (mA) 0.97 Current consumption per channel (1 Mbps) (typ) (mA) 1.53 Creepage (min) (mm) 3.7, 8 Clearance (min) (mm) 3.7, 8 TI functional safety category Functional Safety-Capable
SOIC (DW) 16 106.09 mm² 10.3 x 10.3 SSOP (DBQ) 16 29.4 mm² 4.9 x 6
  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-year projected lifetime at 1500 V RMS working voltage
    • Up to 5000 V RMS isolation rating
    • Up to 12.8 kV surge capability
    • ±100 kV/µs typical CMTI
  • Wide supply range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V Level translation
  • Default output high (ISO773x) and low (ISO773xF) options
  • Low power consumption, typical 1.5 mA per channel at 1 Mbps
  • Low propagation delay: 11 ns Typical (5-V Supplies)
  • 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) and QSOP (DBQ-16) package options
  • Safety-related certifications:
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL 1577 component recognition program
    • IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1 certifications
  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-year projected lifetime at 1500 V RMS working voltage
    • Up to 5000 V RMS isolation rating
    • Up to 12.8 kV surge capability
    • ±100 kV/µs typical CMTI
  • Wide supply range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V Level translation
  • Default output high (ISO773x) and low (ISO773xF) options
  • Low power consumption, typical 1.5 mA per channel at 1 Mbps
  • Low propagation delay: 11 ns Typical (5-V Supplies)
  • 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) and QSOP (DBQ-16) package options
  • Safety-related certifications:
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL 1577 component recognition program
    • IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1 certifications

The ISO773x-Q1 devices are high-performance, triple-channel digital isolators with 5000 V RMS (DW package) and 3000 V RMS (DBQ package) isolation ratings per UL 1577.

This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC.

The ISO773x-Q1 family of devices 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 a double capacitive silicon dioxide (SiO 2) 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 and to reduce power consumption.

The ISO7730-Q1 device has all three channels in the same direction and the ISO7731-Q1 device has two forward and one reverse-direction channel. If the input power or signal is lost, the default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, this family of devices helps prevent noise currents on data buses, such as CAN and LIN, or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISO773x-Q1 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO773x-Q1 family of devices is available in 16-pin wide-SOIC and QSOP packages.

The ISO773x-Q1 devices are high-performance, triple-channel digital isolators with 5000 V RMS (DW package) and 3000 V RMS (DBQ package) isolation ratings per UL 1577.

This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC.

The ISO773x-Q1 family of devices 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 a double capacitive silicon dioxide (SiO 2) 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 and to reduce power consumption.

The ISO7730-Q1 device has all three channels in the same direction and the ISO7731-Q1 device has two forward and one reverse-direction channel. If the input power or signal is lost, the default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, this family of devices helps prevent noise currents on data buses, such as CAN and LIN, or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISO773x-Q1 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO773x-Q1 family of devices is available in 16-pin wide-SOIC and QSOP packages.

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Technical documentation

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Type Title Date
* Data sheet ISO773x-Q1 High-Speed, Robust-EMC Reinforced Triple-Channel Digital Isolators datasheet (Rev. E) PDF | HTML 31 Aug 2023
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. S) 29 Feb 2024
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. C) PDF | HTML 07 Sep 2023
Certificate CQC Certificate for ISOxxDBQ (Rev. A) 27 Mar 2023
Certificate CQC Certificate for ISOxxDWx (Rev. J) 27 Mar 2023
Certificate CSA Certificate for ISO77xxDW 13 Mar 2023
Certificate CSA Certificate for ISO77xxDBQ 03 Mar 2023
Certificate TUV Certificate for Isolation Devices (Rev. K) 05 Aug 2022
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. P) 05 Aug 2022
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
Application brief How to Replace Optocouplers with Digital Isolators in Standard Interface Circuit (Rev. A) PDF | HTML 19 May 2021
EVM User's guide Universal Digital Isolator Evaluation Module PDF | HTML 04 Mar 2021
Functional safety information ISO7731-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 18 Jun 2020
Application brief Considerations for Selecting Digital Isolators 24 Jul 2018
User guide ISO77xx Triple/Quad Digital Isolator Evaluation Module User's Guide 05 May 2016

Design & development

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

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
Not available on TI.com
Evaluation board

ISO7741EVM — ISO7741 high-speed, robust EMC quad-channel digital isolator evaluation module

The ISO7741EVM is an evaluaiton module (EVM) to evaluate the ISO7741. The ISO7741 is a high-performance, reinforced quad-channel digital isolator in a wide-body SOIC package (package code DW). The EVM features enough test points and jumber options for you to evaluate the (...)
User guide: PDF
Not available on TI.com
Simulation model

ISO7731 IBIS Model (Rev. A)

SLLM326A.ZIP (62 KB) - IBIS Model
Simulation model

ISO7731 PSpice Transient Model

SLLM479.ZIP (195 KB) - PSpice Model
Reference designs

TIDA-01418 — Automotive high voltage, high power motor driver reference design for HVAC compressor

This brushless DC (BLDC) motor reference design controls an automotive HVAC (heating, ventilation, and air conditioning) compressor by using the UCC27712-Q1 high-side and low-side gate driver followed by discrete insulated-gate bipolar transistor (IGBT) half bridges. This reference design uses (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01604 — 98.6% Efficiency, 6.6-kW Totem-Pole PFC Reference Design for HEV/EV Onboard Charger

This reference design functions from a base of silicon carbide (SiC) MOSFETs that are driven by a C2000 microcontroller (MCU) with SiC-isolated gate drivers. The design implements three-phase interleaving and operates in continuous conduction mode (CCM) to achieve a 98.46% efficiency at a 240-V (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01255 — Automotive Reinforced Isolation CAN Reference Design

This reference design is built for isolated CAN communication, which is widely used in automotive environments. In hybrid and electric vehicles (HEV/EVs), a high-voltage network is floating with respect to the chassis ground. Isolation is required for the power and communication channels (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
SOIC (DW) 16 View options
SSOP (DBQ) 16 View options

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