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ISO7842

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Highest isolation rating, quad-channel, 2/2, reinforced digital isolator

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Data sheet

ISO7842

ACTIVE
Data sheet Order now

Product details

Rating Catalog Integrated isolated power No Isolation rating Reinforced Number of channels 4 Forward/reverse channels 2 forward / 2 reverse Default output High, Low Data rate (max) (MBps) 100 Surge isolation voltage (VIOSM) (VPK) 12800 Transient isolation voltage (VIOTM) (VPK) 8000 Withstand isolation voltage (VISO) (Vrms) 5700 CMTI (min) (V/µs) 85000 Operating temperature range (°C) -55 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) 1 Current consumption per channel (1 Mbps) (typ) (mA) 1.65 Creepage (min) (mm) 8, 14.5 Clearance (min) (mm) 8, 14.5
Rating Catalog Integrated isolated power No Isolation rating Reinforced Number of channels 4 Forward/reverse channels 2 forward / 2 reverse Default output High, Low Data rate (max) (MBps) 100 Surge isolation voltage (VIOSM) (VPK) 12800 Transient isolation voltage (VIOTM) (VPK) 8000 Withstand isolation voltage (VISO) (Vrms) 5700 CMTI (min) (V/µs) 85000 Operating temperature range (°C) -55 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) 1 Current consumption per channel (1 Mbps) (typ) (mA) 1.65 Creepage (min) (mm) 8, 14.5 Clearance (min) (mm) 8, 14.5
SOIC (DW) 16 106.09 mm² 10.3 x 10.3 SOIC (DWW) 16 177.675 mm² 10.3 x 17.25
  • Signaling Rate: Up to 100 Mbps
  • Wide Supply Range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V Level Translation
  • Wide Temperature Range: –55°C to +125°C
  • Low-Power Consumption, Typical 1.7 mA per Channel at 1 Mbps
  • Low Propagation Delay: 11 ns Typical
    (5-V Supplies)
  • Industry leading CMTI (Min): ±100 kV/µs
  • Robust Electromagnetic Compatibility (EMC)
  • System-Level ESD, EFT, and Surge Immunity
  • Low Emissions
  • Isolation Barrier Life: >40 Years
  • Wide Body SOIC-16 Package and Extra-Wide Body SOIC-16 Package Options
  • Safety and Regulatory Approvals:
    • 8000-VPK Reinforced Isolation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    • 5.7-kVRMS Isolation for 1 Minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 60601-1 End Equipment Standards
    • CQC Certification per GB4943.1-2011
    • TUV Certification per EN 61010-1 and EN 60950-1
    • All DW Package Certifications Complete; DWW Package Certifications Complete per UL, VDE, TUV and Planned for CSA and CQC
  • Signaling Rate: Up to 100 Mbps
  • Wide Supply Range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V Level Translation
  • Wide Temperature Range: –55°C to +125°C
  • Low-Power Consumption, Typical 1.7 mA per Channel at 1 Mbps
  • Low Propagation Delay: 11 ns Typical
    (5-V Supplies)
  • Industry leading CMTI (Min): ±100 kV/µs
  • Robust Electromagnetic Compatibility (EMC)
  • System-Level ESD, EFT, and Surge Immunity
  • Low Emissions
  • Isolation Barrier Life: >40 Years
  • Wide Body SOIC-16 Package and Extra-Wide Body SOIC-16 Package Options
  • Safety and Regulatory Approvals:
    • 8000-VPK Reinforced Isolation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    • 5.7-kVRMS Isolation for 1 Minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 60601-1 End Equipment Standards
    • CQC Certification per GB4943.1-2011
    • TUV Certification per EN 61010-1 and EN 60950-1
    • All DW Package Certifications Complete; DWW Package Certifications Complete per UL, VDE, TUV and Planned for CSA and CQC

The ISO7842x device is a high-performance, quad-channel digital isolator with a 8000-VPK isolation voltage. This device has reinforced isolation certifications according to VDE, CSA, CQC, and TUV. The isolator 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 silicon-dioxide (SiO2) insulation barrier.

This device comes with enable pins that can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. The ISO7842 device has two forward and two reverse-direction channels. If the input power or signal is lost, the default output is high for the ISO7842 device and low for the ISO7842F device. See the Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, this device helps prevent noise currents on a data bus 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 ISO7842 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance.

The ISO7842 device is available in 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.

The ISO7842x device is a high-performance, quad-channel digital isolator with a 8000-VPK isolation voltage. This device has reinforced isolation certifications according to VDE, CSA, CQC, and TUV. The isolator 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 silicon-dioxide (SiO2) insulation barrier.

This device comes with enable pins that can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. The ISO7842 device has two forward and two reverse-direction channels. If the input power or signal is lost, the default output is high for the ISO7842 device and low for the ISO7842F device. See the Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, this device helps prevent noise currents on a data bus 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 ISO7842 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance.

The ISO7842 device is available in 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.

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Technical documentation

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Type Title Date
* Data sheet ISO7842x High-Performance, 8000-VPK Reinforced Quad-Channel Digital Isolator datasheet (Rev. G) PDF | HTML 02 Mar 2017
Application note Digital Isolator Design Guide (Rev. G) PDF | HTML 13 Sep 2023
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. C) PDF | HTML 07 Sep 2023
White paper Circuit Board Insulation Design According to IEC60664 for Motor Drive Apps PDF | HTML 31 Aug 2023
Certificate CQC Certificate for ISOxxDWx (Rev. J) 27 Mar 2023
Certificate CSA Certificate for ISO78xxDWx 13 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
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. R) 12 Jul 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
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
Functional safety information Isolation in AC Motor Drives: Understanding the IEC 61800-5-1 Safety Standard (Rev. A) 19 Sep 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
Analog Design Journal Pushing the envelope with high-performance digital-isolation technology (Rev. A) 22 Aug 2018
Application note Considerations for Selecting Digital Isolators 24 Jul 2018
Functional safety information Isolation in solar power converters: Understanding the IEC62109-1 safety standar (Rev. A) 18 May 2018
Analog Design Journal How to reduce radiated emissions of digital isolators for systems with RF module 26 Mar 2018
Application note Isolation Glossary (Rev. A) 19 Sep 2017
Analog Design Journal 4Q 2015 Analog Applications Journal 30 Oct 2015
Analog Design Journal Pushing the envelope with high-performance digital-isolation technology 30 Oct 2015
EVM User's guide ISO784xx Quad-Channel Digital Isolator EVM User Guide 17 Oct 2014
White paper Understanding electromagnetic compliance tests in digital isolators 17 Oct 2014
White paper High-voltage reinforced isolation: Definitions and test methodologies 16 Oct 2014

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

ISO7842-EVM — High-Immunity, 5.7kVRMS Reinforced Quad-Channel 2/2 Digital Isolator Evaluation Module

The ISO7842 provides galvanic isolation up to 5700 VRMS for 1 minute per UL and 8000 VPK per VDE. This device has four isolated channels comprised of a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, this (...)

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

ISO7842 IBIS Model (Rev. A)

SLLM263A.ZIP (52 KB) - IBIS Model
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Simulation model

ISO7842F IBIS Model (Rev. A)

SLLM278A.ZIP (52 KB) - IBIS Model
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Reference designs

TIDA-00420 — ADC-based, digitally-isolated, wide-input, 16-channel, AC/DC binary input reference design

This reference design showcases a cost-optimized and scalable ADC-based AC/DC binary input module (BIM) architecture with reinforced isolation. The 16 channels of a 10- or 12-bit SAR ADC are used for sensing multiple binary inputs. The op amps, in addition to keeping the cost per-channel low, (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01037 — 20-bit, 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate

TIDA-01037 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design that utilizes two different isolator devices to maximize signal chain SNR and sample rate performance. For signals requiring low jitter, such as ADC sampling clocks, TI’s ISO73xx family of low jitter (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01590 — Reference Design for 1200V Isolated I2C High Side Current Sensing for Solar Combiner Boxes

This reference design is an isolated high-side current sensing design for a smart combiner box in a grounded or ungrounded system. The current sensing topology enables multichannel, sub ±1% error, isolated current sensing for high-voltage systems up to 1200-VDC, limited by the DC/DC (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01035 — 20-bit Isolated Data Acquisition Reference Design Optimizing Jitter for Max SNR and Sample Rate

The TIDA-01035 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design demonstrating how to resolve and optimize performance challenges typical of digitally isolated data acquisition systems.
  • Significantly improves high frequency AC signal chain performance (SNR  and THD) by (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00732 — 18-bit, 2-Msps Isolated Data Acquisition Reference Design to Achieve Maximum SNR and Sampling Rate

This “18-bit, 2-Msps Isolated Data Acquisition Reference Design to achieve maximum SNR and sampling rate”  illustrates how to overcome performance-limiting challenges typical of isolated data acquisition system design:
  • Maximizing sampling rate by minimizing propagation delay introduced by digital (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00448 — Flexible High Current IGBT Gate Driver with Reinforced Digital Isolator Reference Design

The TIDA-00448 reference design is an isolated IGBT gate driver with bipolar gate voltages intended for driving  high power IGBT’s requiring high peak gate current up to 40 A. TI’s NexFET power blocks which scales in this range, with same package, enables single design to be used (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00267 — Polarity Correcting Isolated CAN Reference Design

A ready to use design that efficiently solves the problem of improper installation by adding antiparallel communication channels and appropriate control signal to enable polarity correction for the Controller Area Network (CAN) bus.
Schematic: PDF
Reference designs

TIDA-00330 — Reinforced isolated M-LVDS transceiver reference design

This reference design demonstrates the performance of a reinforced, isolated, full-duplex M-LVDS transceiver node using the ISO7842 and SN65MLVD203. A single reinforced digital isolator replaces two basic digital isolators, reducing cost and PCB area.
Design guide: PDF
Schematic: PDF
Package Pins Download
SOIC (DW) 16 View options
SOIC (DWW) 16 View options
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