Top

Product details

Parameters

Integrated isolated power No Number of channels (#) 3 Forward/reverse channels 2/1 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) 0.97 Current consumption per channel (1 Mbps) (Typ) (mA) 1.53 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 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 (ISO773x) and low (ISO773xF) options
  • Wide temperature range: –55°C to +125°C
  • 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
  • Automotive version available: ISO773x-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.

open-in-new Find other Digital isolators

Description

The ISO773x devices are high-performance, triple-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 ISO7731B device is designed for applications that require basic insulation ratings only.

The ISO773x 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 (SiO2) 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 device has all three channels in the same direction and the ISO7731 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 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 ISO773x device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO773x family of devices is available in 16-pin wide-SOIC and QSOP packages.

open-in-new Find other Digital isolators
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 18
Type Title Date
* Datasheet ISO773x High-Speed, Robust-EMC Reinforced and Basic Triple-Channel Digital Isolators datasheet (Rev. G) Feb. 25, 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
More literature VDE certificate for basic isolation for DIN VDE V 0884-11:2017-01 (Rev. Q) Sep. 20, 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 Top 6 design questions about I2C isolators Mar. 13, 2019
Application notes How to isolate signal and power for I2C (Rev. A) Oct. 02, 2018
Application notes Considerations for Selecting Digital Isolators Jul. 24, 2018
Application notes How to reduce radiated emissions of digital isolators for systems with RF module Mar. 26, 2018
Application notes Designing an Isolated I2C Bus interface by using digital isolators (Rev. A) Mar. 13, 2018
Application notes Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A) Jun. 15, 2017
User guides ISO77xxDBQ Triple- and Quad-Digital Isolator Evaluation Module Jun. 02, 2016
User guides 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 BOARDS Download
document-generic User guide
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 BOARDS Download
document-generic User guide
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 CARDS Download
document-generic User guide
299
Description
The TPS23881EVM-083 daughter card features an 8 channel, IEEE 802.3bt ready PSE controller. When paired with motherboard PSEMTHR24EVM-081  and MCU daughter card PSEMCUDAUEVM-082 (sold separately), users can evaluate a full multiple-port PSE system.

The full PoE Evaluation ecosystem includes the (...)
Features
  • 24 port PoE PSE system and expandable to 48 ports
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE 802.3bt compliance
  • Mutiple power supplies
  • Supporting Legacy PD
DAUGHTER CARDS Download
Description
The TPS23882EVM-084 daughter card features an 8 channel, IEEE 802.3bt ready (Type-3, 30W) 2-Pair PSE controller. When paired with the PSEMTHR24EVM-081 motherboard and PSEMCUDAUEVM-082 MCU daughter card (sold separately), users can evaluate a multiple-port PSE system.

The full PoE Evaluation (...)
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 MODELS Download
SLLM326A.ZIP (62 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
24-port (PoE 2, 4-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23881 — This reference design showcases a Type-4 (PoE 2, 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 90W per port for for IEEE 802.3bt (PoE 2) applications and up to 120W per port for non-standard applications. Based on the MSP430F523x family, our (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23882 — This reference design showcases a Type-3, 30W, 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family, TI's TPS2388x FirmPSE (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Polyphase Shunt Metrology with Isolated AFE Reference Design
TIDA-01550 — This reference design implements a class 0.5% three-phase energy measurement system with isolated shunt sensors by using metrology analog frontends( AFEs). The metrology AFEs sense the voltage and current for each phase, calculate the metrology parameters for the phase, and then send out the (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
One-phase shunt electricity meter reference design using standalone ADCs
TIDA-010036 — This reference design implements Class 0.5 single-phase energy measurement using standalone multi-channel analog-to-digital converters (ADC) to sample a shunt current sensor. With the combination of the shunt sensor and a compact magnetically immune power supply, the design provides protection (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High accuracy split-phase CT electricity meter reference design using standalone ADCs
TIDA-010037 — This reference design implements Class 0.1 split-phase energy measurement using high-performance, multi-channel analog-to-digital converters (ADC). The independent ADC samples the output of current transformers (CT) at 8 kHz to measure the current and voltage of each leg of the AC mains. The (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos