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Product details

Parameters

Integrated isolated power No Number of channels (#) 4 Forward/reverse channels 3/1 Isolation rating (Vrms) 5000, 3000 Data rate (Max) (Mbps) 100 Rating Catalog Surge voltage capability (Vpk) 12800, 7800, 6400 Current consumption per channel (DC) (Typ) (mA) 0.88 Current consumption per channel (1 Mbps) (Typ) (mA) 1.48 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 (DW) 16 SSOP (DBQ) 16 29 mm² 4.9 x 6 open-in-new Find other Digital isolators

Features

  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-year projected lifetime at 1500 VRMS working voltage
    • Up to 5000 VRMS 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 (ISO774x) and low (ISO774xF) options
  • Wide temperature range: –55°C to 125°C
  • Low power consumption, typical 1.5 mA per channel at 1 Mbps
  • Low propagation delay: 10.7 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
  • Automotive version available: ISO774x-Q1
  • Safety-related certifications:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • CSA, CQC, and TUV certifications

All trademarks are the property of their respective owners.

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Description

The ISO774x devices are high-performance, quad-channel digital isolators with 5000 VRMS (DW package) and 3000 VRMS (DBQ package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO7741B device is designed for applications that require basic insulation ratings only.

The ISO774x devices provide 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 (SiO2) insulation barrier. These devices come 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 ISO7740 device has all four channels in the same direction, the ISO7741 device has three forward and one reverse-direction channels, and the ISO7742 device has two forward and two reverse-direction channels. If the input power or signal is lost, 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, these devices help prevent noise currents on data buses, such as RS-485, RS-232, and CAN, 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 ISO774x devices have been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO774x devices are available in 16-pin SOIC and QSOP packages.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet ISO774x High-Speed, Robust-EMC Reinforced and Basic Quad-Channel Digital Isolators datasheet (Rev. G) Feb. 14, 2020
Technical articles How to select the right digital isolator for your design Oct. 21, 2020
Application note Converting SPI to GPIO Through Digital Isolators Oct. 16, 2020
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators Oct. 12, 2020
White paper Signal and Power Isolation Considerations for Compact, Efficient Analog Input Sep. 11, 2020
Application note Topology Selection for Isolated Power Supplies in Patient Monitor (Rev. A) Sep. 02, 2020
Application note What is EMC? 4 Questions About EMI, Radiated Emissions, ESD and EFT in Isolated Jul. 21, 2020
Functional safety information ISO7741-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Jun. 18, 2020
Application note Introduction to HVDC Architecture and Solutions for Control and Protection (Rev. A) Jun. 01, 2020
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
Application note Designing High Voltage Power Supply for Ultrasound Smart Probes Oct. 22, 2019
White paper 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
Application note Digitally-isolated ADS8689 circuit design (Rev. A) Mar. 07, 2019
Application note How to isolate signal and power for an RS-485 system (Rev. B) Oct. 16, 2018
Application note Industrial data-acquisition interfaces with digital isolators (Rev. A) Oct. 02, 2018
Application note Digital Isolator Design Guide (Rev. B) Aug. 01, 2018
Application note Considerations for Selecting Digital Isolators Jul. 24, 2018
White paper Understanding failure modes in isolators (Rev. A) May 10, 2018
Application note How to reduce radiated emissions of digital isolators for systems with RF module Mar. 26, 2018
Application note Isolation Glossary (Rev. A) Sep. 19, 2017
Application note How to use isolation to improve ESD, EFT and surge immunity in industrial system Jul. 24, 2017
Application note Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A) Jun. 15, 2017
User guide ISO77xxDBQ Triple- and Quad-Digital Isolator Evaluation Module Jun. 02, 2016
User guide ISO77xx Triple/Quad Digital Isolator Evaluation Module User's Guide May 05, 2016

Design & development

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

Hardware development

EVALUATION BOARD Download
49
Description
ISO7741DBQEVM is an Evaluaiton Module used to evaluate the high performance, reinforced quad channel digital isolator ISO7741 in 16-Pin SSOP package (Package Code-DBQ). The EVM features enough test points & jumper options for one to evaluate the device with minimal external components.
Features
  • High Speed, Robust EMC Dual-Channel Digital Isolator
  • Wide Supply & Level Translation Range: 2.25V to 5.5V
  • High Signaling Rate: Up to 100Mbps
  • Low Propagation Delay: 11ns Typical (5V Supplies)
  • Isolation Barrier Life > 100 Years
EVALUATION BOARD Download
49
Description
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 (...)
Features
  • High-speed, robust EMC quad-channel digital isolator
  • Wide supply & level translation range: 2.25 V to 5.5 V
  • High signaling rate: Up to 100 Mbps
  • Low propagation delay: 11 ns typical (5-V supplies)
  • Isolation barrier life > 100 years
DAUGHTER CARD Download
Description

TPS23882EVM-084 is a 24-port (24-channel) daughter card used to evaluate the TPS23882 which is a 2-pair, type-3, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23882 in high port count applications (...)

Features
  • 24 port PoE PSE system and expandable to 48 ports through edge connectors
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE 802.3bt ready
  • Mutiple power supplies
  • Supporting Legacy PD

Design tools & simulation

SIMULATION MODEL Download
SLLM311A.ZIP (62 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
Size and Cost Optimized Binary Module Reference Design Using Digital Isolator with Integrated Power
TIDA-00847 — The TIDA-00847 TI design showcases space and cost optimized architecture for a 4 channel DC input binary module  with improved measurement accuracy and status indication using only two TI products simplifying system design. MCU based binary module improves measurement resolution of binary input (...)
document-generic Schematic
REFERENCE DESIGNS Download
Isolated power architecture reference design for communication and analog input/output modules
TIDA-00300 This reference design provides a simple means through which to isolate I2C or SPI type communication lines. This is often required in Grid Infrastructure applications such as, protertion relays and circuit breakers, where high voltages are involved. This reference design provides the complete (...)
document-generic Schematic
REFERENCE DESIGNS Download
High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design
TIDA-00834 — The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled, 16-bit, ±10 V, bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems (...)
document-generic Schematic
REFERENCE DESIGNS Download
Compact, Non-Isolated 3 Phase Inverter Reference Design for 200-480 VAC Industrial Drives
TIDA-01456 — This reference design realizes a 3 phase inverter subsystem for variable frequency AC inverter drives and servo drives. This design is particularly suited for drive architectures in which the microcontroller and inverter ground are non-isolated. The basic isolated gate driver UCC5320S is used for (...)
document-generic Schematic
REFERENCE DESIGNS Download
TUV-assessed digital input reference design for IEC 61508 (SIL-2)
TIDA-010049 — This 8-channel, group-isolated, digital input module reference design, focuses on applications with the need for industrial functional safety. This design has diagnostics implemented to help detect both permanent and transient random hardware faults. The concept of this input module has been (...)
document-generic Schematic
REFERENCE DESIGNS Download
Reference design for power-isolated ultra-compact analog output module
TIDA-01535 This single-channel, power-isolated, analog output module reference design delivers current and voltage outputs using the highly-integrated DAC8771 digital-to-analog converter (DAC). The high integration of the DAC8771 coupled with the LM25180 primary-side regulated flyback converter lead to a (...)
document-generic Schematic
REFERENCE DESIGNS Download
HART-enabled PLC analog input module reference design
TIDA-060020 — This reference design is a single-channel, 4-mA to 20-mA analog input module that supports the highway addressable remote transducer (HART) communication protocol, enabling bidirectional digital communication between field transmitters and programmable logic controllers (PLCs). The loop current (...)
document-generic Schematic
REFERENCE DESIGNS Download
Isolated, Transformerless, Bipolar Supply for 24-Bit ADCs Reference Design
TIDA-01434 — This isolated, 3.65-mm thin reference design enables highly-integrated, bipolar input and high-performance solutions with a 24-bit delta-sigma analog-to-digital converter (ADC). Modern analog input modules need high performance in different aspects such as higher channel density at the same room (...)
document-generic Schematic
REFERENCE DESIGNS Download
Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator
TIDA-01214 — This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time performance (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options
SSOP (DBQ) 16 View options

Ordering & quality

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  • Ongoing reliability monitoring

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