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ISO7320C

ACTIVE

Low-power, dual-channel, 2/0, 25-Mbps digital isolator

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Data sheet

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ISO6720 ACTIVE General purpose dual-channel, 2/0, digital isolator Supports 50-Mbps data rate
ISO7720 ACTIVE Robust EMC, dual-channel, 2/0, reinforced digital isolator Supports 100-Mbps data rate

ISO7320C

ACTIVE
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Product details

Integrated isolated power No Number of channels 2 Forward/reverse channels 2 forward / 0 reverse Withstand isolation voltage (VISO) (Vrms) 3000 Data rate (max) (MBits) 25 Rating Catalog Surge isolation voltage (VIOSM) (VPK) 7800 Current consumption per channel (DC) (typ) (mA) 0.85 Current consumption per channel (1 Mbps) (typ) (mA) 0.85 Operating temperature range (°C) -40 to 125 Default output High Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 Propagation delay time (typ) (µs) 0.031
Integrated isolated power No Number of channels 2 Forward/reverse channels 2 forward / 0 reverse Withstand isolation voltage (VISO) (Vrms) 3000 Data rate (max) (MBits) 25 Rating Catalog Surge isolation voltage (VIOSM) (VPK) 7800 Current consumption per channel (DC) (typ) (mA) 0.85 Current consumption per channel (1 Mbps) (typ) (mA) 0.85 Operating temperature range (°C) -40 to 125 Default output High Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 Propagation delay time (typ) (µs) 0.031
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Signaling Rate: 25 Mbps
  • Integrated Noise Filter on the Inputs
  • Default Output ‘High’ and ‘Low’ Options
  • Low Power Consumption: Typical ICC per Channel
    at 1 Mbps:
    • ISO7320: 1.2 mA (5 V Supplies),
      0.9 mA (3.3 V Supplies)
    • ISO7321: 1.7 mA (5 V Supplies),
      1.2 mA (3.3 V Supplies)
  • Low Propagation Delay: 33 ns
    Typical (5V Supplies)
  • 3.3 V and 5 V Level Translation
  • Wide Temperature Range: –40°C to 125°C
  • 65 KV/µs Transient Immunity,
    Typical (5V Supplies)
  • Robust Electromagnetic Compatibility (EMC)
    • System-level ESD, EFT, and Surge Immunity
    • Low Emissions
  • Isolation Barrier Life: > 25 Years
  • Operates from 3.3 V and 5 V Supplies
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10
      and DIN EN 61010-1
    • 3000 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC
      60950-1 and IEC 61010-1 Standards
    • CQC Certification per GB4943.1-2011
  • Signaling Rate: 25 Mbps
  • Integrated Noise Filter on the Inputs
  • Default Output ‘High’ and ‘Low’ Options
  • Low Power Consumption: Typical ICC per Channel
    at 1 Mbps:
    • ISO7320: 1.2 mA (5 V Supplies),
      0.9 mA (3.3 V Supplies)
    • ISO7321: 1.7 mA (5 V Supplies),
      1.2 mA (3.3 V Supplies)
  • Low Propagation Delay: 33 ns
    Typical (5V Supplies)
  • 3.3 V and 5 V Level Translation
  • Wide Temperature Range: –40°C to 125°C
  • 65 KV/µs Transient Immunity,
    Typical (5V Supplies)
  • Robust Electromagnetic Compatibility (EMC)
    • System-level ESD, EFT, and Surge Immunity
    • Low Emissions
  • Isolation Barrier Life: > 25 Years
  • Operates from 3.3 V and 5 V Supplies
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10
      and DIN EN 61010-1
    • 3000 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC
      60950-1 and IEC 61010-1 Standards
    • CQC Certification per GB4943.1-2011

ISO732x provide galvanic isolation up to 3000 VRMS for 1 minute per UL and 4242 VPK per VDE. These devices have two isolated channels comprised of logic input and output buffers separated by silicon dioxide (SiO2) insulation barriers. ISO7320 has both channels in the same direction while ISO7321 has the two channels in opposite direction. In case of input power or signal loss, default output is ‘low’ for devices with suffix ‘F’ and ‘high’ for devices without suffix ‘F’. See Device Functional Modes for further details. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. ISO732x have integrated noise filters for harsh industrial environment where short noise pulses may be present at the device input pins. ISO732x have TTL input thresholds and operate from 3 V to 5.5 V supply levels. Through innovative chip design and layout techniques, electromagnetic compatibility of ISO732x have been significantly enhanced to enable system-level ESD, EFT, Surge and Emissions compliance.

ISO732x provide galvanic isolation up to 3000 VRMS for 1 minute per UL and 4242 VPK per VDE. These devices have two isolated channels comprised of logic input and output buffers separated by silicon dioxide (SiO2) insulation barriers. ISO7320 has both channels in the same direction while ISO7321 has the two channels in opposite direction. In case of input power or signal loss, default output is ‘low’ for devices with suffix ‘F’ and ‘high’ for devices without suffix ‘F’. See Device Functional Modes for further details. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. ISO732x have integrated noise filters for harsh industrial environment where short noise pulses may be present at the device input pins. ISO732x have TTL input thresholds and operate from 3 V to 5.5 V supply levels. Through innovative chip design and layout techniques, electromagnetic compatibility of ISO732x have been significantly enhanced to enable system-level ESD, EFT, Surge and Emissions compliance.
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Technical documentation

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Type Title Date
* Data sheet ISO732x Robust EMC, Low Power, Dual-Channel Digital Isolators datasheet (Rev. C) PDF | HTML 27 Apr 2015
Certificate CSA Certificate for ISO73xxD 22 Feb 2023
Certificate CQC Certificate for ISOxxD (Rev. A) 07 Feb 2023
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. U) 07 Feb 2023
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. P) 05 Aug 2022
More literature Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. B) PDF | HTML 26 Jul 2022
More literature Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
More literature Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
EVM User's guide Universal Digital Isolator Evaluation Module PDF | HTML 04 Mar 2021
Technical article How to select the right digital isolator for your design 21 Oct 2020
Technical article Why signal isolation matters in 48-V HEV/EV systems 20 Nov 2019
Technical article Staying on budget: How digital isolators are transforming field transmitters 24 May 2019
Technical article What are isolated digital inputs? 08 Mar 2019

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

ISO7310C-EVM — Single-channel digital isolator evaluation module

The ISO7310C-EVM evaluation module (EVM) helps you evaluate device performance, supporting the fast development and analysis of isolated systems. This EVM board supports evaluation of any of our single-channel or dual-channel digital isolators in an 8-pin SOIC package.

The ISO7310C digital isolator (...)

Not available on TI.com
Simulation model

ISO7320C IBIS Model

SLLM255.ZIP (29 KB) - IBIS Model
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Reference designs

TIDA-01094 — Magnetically Immune Transformerless Power for Isolated Shunt Current Measurement Reference Design

The TIDA-01094 reference design implements a class 0.5 three-phase  transformerless energy measurement system with isolated shunt sensors by using isolated delta-sigma modulators. The delta sigma modulators have their output circuitry capacitively isolated from input circuitry, thereby (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01088 — Multi-Phase Power Quality Measurement with Isolated Shunt Sensors Reference Design

The TIDA-01088 reference design implements power quality parameter measurement in a polyphase energy measurement system. Total harmonic distortion (THD), fundamental readings, and standard metrology parameters such as active and reactive energy and power are calculated. Phase to phase angles are (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00839 — Magnetic Tamper Detection Using Low-Power Hall Effect Sensors Reference Design

Magnetic tampering can paralyze any transformer in an energy measurement system, which may potentially lead to the system being unable to be powered properly or unable to correctly register the energy consumed by a load.  This design implements a Class 0.2  three-phase energy measurement (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00601 — Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design

The TIDA-00601 design implements a Class 0.5% three-phase energy measurement system with isolated shunt sensors.  The isolation is achieved through the use of isolated delta-sigma modulators that have output circuitry capacitively isolated from input circuitry.  An energy measurement SoC (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-00809 — EMC Compliant, Group Isolated, 2-Channel Binary Input Module for Wide AC/DC Input Reference Design

This reference design showcases a cost-optimized architecture that improves resolution of a binary-input module. A microcontroller unit (MCU) is shared between two-input channels (group isolation) to minimize the cost per channel. Wide-input range is covered using an amplifier with gain and (...)
Design guide: PDF
Schematic: PDF
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