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ISO7842

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

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

ISO7842

ACTIVE
Data sheet Order now

Product details

Parameters

Integrated isolated power No Number of channels (#) 4 Forward/reverse channels 2/2 Isolation rating (Vrms) 5700 Data rate (Max) (Mbps) 100 Rating Catalog Surge voltage capability (Vpk) 12800 Current consumption per channel (DC) (Typ) (mA) 1 Current consumption per channel (1 Mbps) (Typ) (mA) 1.65 Operating temperature range (C) -55 to 125 Default output High, Low Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.25 Propagation delay (Typ) (ns) 10.7 open-in-new Find other Digital isolators

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 SOIC (DWW) 16 178 mm² 10.3 x 17.25 open-in-new Find other Digital isolators

Features

  • 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

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Description

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
* Datasheet ISO7842x High-Performance, 8000-VPK Reinforced Quad-Channel Digital Isolator datasheet (Rev. G) Mar. 02, 2017
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
Technical articles Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
More literature CSA Certification (Rev. P) Nov. 19, 2019
More literature VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. N) Nov. 13, 2019
White papers Isolation in AC Motor Drives: Understanding the IEC 61800-5-1 Safety Standard (Rev. A) Sep. 19, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
Technical articles Staying on budget: How digital isolators are transforming field transmitters May 24, 2019
Technical articles What are isolated digital inputs? Mar. 08, 2019
Application notes Pushing the envelope with high-performance digital-isolation technology (Rev. A) Aug. 22, 2018
Application notes Digital Isolator Design Guide (Rev. B) Aug. 01, 2018
Application notes Considerations for Selecting Digital Isolators Jul. 24, 2018
White papers Isolation in solar power converters: Understanding the IEC62109-1 safety standar (Rev. A) May 18, 2018
Application notes How to reduce radiated emissions of digital isolators for systems with RF module Mar. 26, 2018
Application notes Isolation Glossary (Rev. A) Sep. 19, 2017
Application notes 4Q 2015 Analog Applications Journal Oct. 30, 2015
Application notes Pushing the envelope with high-performance digital-isolation technology Oct. 30, 2015
User guides ISO784xx Quad-Channel Digital Isolator EVM User Guide Oct. 17, 2014
White papers Understanding electromagnetic compliance tests in digital isolators Oct. 17, 2014
White papers High-voltage reinforced isolation: Definitions and test methodologies Oct. 16, 2014

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description

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 (...)

Features
  • 8000 VPK isolation per VDE0884-10 Ed 2.0
  • 5.7 kVRMS isolation for 1 minute per UL 1577
  • Signaling rate: 100 Mbps
  • Isolation barrier life: > 25 years
View details

Design tools & simulation

SIMULATION MODELS Download
SLLM263A.ZIP (52 KB) - IBIS Model
SIMULATION MODELS Download
SLLM278A.ZIP (52 KB) - IBIS Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
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Reference designs

REFERENCE DESIGNS Download
20-bit, 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate
TIDA-01037 — 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 devices (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design for 1200V Isolated I2C High Side Current Sensing for Solar Combiner Boxes
TIDA-01590 — 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 transformer.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
20-bit Isolated Data Acquisition Reference Design Optimizing Jitter for Max SNR and Sample Rate
TIDA-01035 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
18-bit, 2-Msps Isolated Data Acquisition Reference Design to Achieve Maximum SNR and Sampling Rate
TIDA-00732 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Flexible High Current IGBT Gate Driver with Reinforced Digital Isolator Reference Design
TIDA-00448 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Polarity Correcting Isolated CAN Reference Design
TIDA-00267 — 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.
document-generic Schematic
REFERENCE DESIGNS Download
Reinforced Isolated M-LVDS Transceiver Reference Design
TIDA-00330 — 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.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options
SOIC (DWW) 16 View options

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