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Product details

Parameters

Type Digital isolator Data rate (Max) (Mbps) 100 Isolation rating (Vrms) 5000 Surge voltage capability (Vpk) 10000 Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Signal isolators with integrated power

Package | Pins | Size

SO-MOD (DWE) 16 106 mm² 10.3 x 10.3 open-in-new Find other Signal isolators with integrated power

Features

  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-Year projected lifetime at 1 kVRMS working voltage
    • Up to 5000 VRMS isolation rating
    • Up to 10 kVPK surge capability
    • ±100 kV/µs minimum CMTI
  • Integrated high-efficiency DC-DC converter with on-chip transformer
  • 3-V to 5.5-V Wide input supply range
  • Regulated 5-V or 3.3-V output
  • Up to 0.65-W output power
  • 5 V to 5 V; 5 V to 3.3 V: Available load current ≥ 130 mA
  • 3.3 V to 3.3 V: Available load current ≥ 75 mA
  • Soft-start to limit inrush current
  • Overload and short-circuit protection
  • Thermal shutdown
  • Default output: High and Low options
  • Low propagation delay: 13 ns Typ (5-V supply)
  • 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
  • 16-pin Wide SOIC package
  • Extended temperature range: –40°C to +125°C
  • Safety-related certifications:
    • 7071-VPK reinforced isolation per DIN V VDE V 0884-11:2017-01
    • 5000-VRMS isolation for 1 minute per UL 1577
    • CSA Certification per IEC 60950-1, IEC 62368-1 and IEC 60601-1 end equipment standards
    • CQC Approval per GB4943.1-2011
    • TUV Certification according to EN 60950-1 and EN 61010-1

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Description

The ISOW784x is a family of high-performance, quad-channel reinforced digital isolators with an integrated high-efficiency power converter. The integrated DC-DC converter provides up to 650 mW of isolated power at high efficiency and can be configured for various input and output voltage configurations. Therefore these devices eliminate the need for a separate isolated power supply in space-constrained isolated designs.

The ISOW784x family of devices provides high electromagnetic immunity and low emissions while isolating CMOS or LVCMOS digital I/Os. The signal-isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier, whereas, power isolation uses on-chip transformers separated by thin film polymer as insulating material. Various configurations of forward and reverse channels are available. If the input signal is lost, the default output is high for the ISOW784x devices without the F suffix and low for the devices with the F suffix (see VSI and VSO can be either VCC or VISO depending on the channel direction).

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 device has been significantly enhanced to ease system-level ESD, EFT, surge and emissions compliance. The high-efficiency of the power converter allows operation at a higher ambient temperature. The device is available in a 16-pin SOIC wide-body (SOIC-WB) DWE package.

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Technical documentation

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Type Title Date
* Datasheet ISOW784x High-performance, 5000-VRMS reinforced quad-channel digital isolators with integrated high-efficiency, low-emissions DC-DC converter datasheet (Rev. F) Mar. 04, 2019
User guide Universal Digital Isolator Evaluation Module Mar. 04, 2021
More literature UL Certification (Rev. O) Feb. 03, 2021
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. A) Dec. 07, 2020
Application note How to Isolate Signal and Power in Isolated CAN Systems (Rev. B) Oct. 08, 2020
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
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 Overvoltage Protection for Isolated DC/DC Converter (Rev. A) Sep. 19, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
Technical article Top 6 design questions about I2C isolators Mar. 13, 2019
Application note Low-Emission Designs With ISOW7841 Integrated Signal and Power Isolator (Rev. C) Feb. 26, 2019
Application note How to isolate signal and power for an RS-485 system (Rev. B) Oct. 16, 2018
Application note How to isolate signal and power for I2C (Rev. A) Oct. 02, 2018
Technical article A modular view of an LED lighting control design Jul. 10, 2018
White paper Enabling high voltage quality and reliability Mar. 13, 2017
User guide ISOW784x Quad-Channel Digital Isolator With Integrated DC-DC Converter EVM Mar. 05, 2017

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description

The ISOW7841EVM is an evaluation module (EVM) used to evaluate the ISOW7841. The ISOW7841 is a high-performance, reinforced quad-channel digital isolator with integrated DC/DC converter in a wide-body SOIC package (package code, DWE). The EVM features enough test points and jumper (...)

Features
  • High-speed, robust EMC quad-channel digital isolator with integrated power of 50% efficiency
  • Wide supply & level translation range: 3 V to 5.5 V
  • High signaling rate: Up to 100 Mbps
  • Low propagation delay: 11 ns typical (5-V supplies)
  • Isolation barrier life > 25 years

Design tools & simulation

SIMULATION MODEL Download
SLLM339.ZIP (31 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 document-generic User guide
REFERENCE DESIGNS Download
Isolated RS-485 With Integrated Signal and Power Reference Design
TIDA-00892 — The TIDA-00892 reference design provides a compact solution capable of generating isolated DC power while supporting isolated RS-485 communication. The design consists of a reinforced digital isolator with integrated power combined with an RS-485 communication transceiver.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated RS-232 With Integrated Signal and Power Reference Design
TIDA-01230 — The TIDA-01230 reference design provides a compact solution capable of generating isolated DC power while supporting isolated RS-232 communication. The design consists of a reinforced digital isolator with integrated power combined with an RS-232 communication transceiver.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
LED-Lighting Control Reference Design for Machine Vision
TIDA-01081 — This LED lighting control reference design demonstrates a unique approach to drive and control a string of multiple high-power light-emitting diodes (LEDs). This reference design is targeted for industrial machine vision systems and is also suitable for other industrial or automotive lighting (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design for Converting RS-232 Signaling to RS-485 Signaling
TIDA-060008 — This reference design provides a circuit of converting RS-232 signaling to RS-485 signaling. This allows for long-distance communication, since the range supported by RS-232 is normally less than 50 feet while the range for RS-485's can exceed 1000 feet. The design implements bidirectional (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Phase-Isolated DAQ Reference Design for Simultaneous Capture of Voltage and Current
TIDA-01472 — This reference design showcases a data acquisition architecture that uses a dual channel SAR ADC paired with a digital isolator with integrated power converter to achieve phase isolated, simultaneous   measurement of voltage and current. Accuracy of <0.3% is achieved using 12-bit (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated Current Sense with Integrated Shunt Resistor and I2C Interface Reference Design
TIDA-01608 — This verified design can accurately measure current on a bus that carries hundreds of volts. This design is targeted for solar and server applications due to their wide high-voltage input range requirements. This design uses the INA260 current shunt monitor with integrated shunt resistor for current (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (DWE) 16 View options

Ordering & quality

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  • Ongoing reliability monitoring

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