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Product details

Parameters

Integrated isolated power No Number of channels (#) 2 Forward/reverse channels 2/0 Isolation rating (Vrms) 5000, 3000 Data rate (Max) (Mbps) 100 Rating Catalog Surge voltage capability (Vpk) 12800, 8000 Current consumption per channel (DC) (Typ) (mA) 0.95 Current consumption per channel (1 Mbps) (Typ) (mA) 1.5 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 (D) 8 19 mm² 4.9 x 3.9 SOIC (DW) 16 77 mm² 10.3 x 7.5 SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Digital isolators

Features

  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-Year projected lifetime at 1.5 kVRMS 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 (ISO772x) and Low (ISO772xF) Options
  • 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
  • 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, DWV-8) and Narrow-SOIC (D-8) package options
  • Automotive Version Available: ISO772x-Q1
  • Safety-related certifications:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • CSA, CQC and TUV certifications

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Description

The ISO772x devices are high-performance, dual-channel digital isolators with 5000 VRMS (DW and DWV packages) and 3000 VRMS (D package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO7721B device is designed for applications that require basic insulation ratings only.

The ISO772x 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. The ISO7720 device has both channels in the same direction while the ISO7721 device has both channels in the opposite direction. In the event of input power or signal loss, 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, these devices help prevent noise currents on data buses, such as RS-485, RS-232, and CAN, from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO772x devices has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO772x family of devices is available in 16-pin SOIC wide-body (DW), 8-pin SOIC wide-body (DWV), and 8-pin SOIC narrow-body (D) packages.

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Technical documentation

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Type Title Date
* Datasheet ISO772x High-Speed, Robust EMC, Reinforced and Basic Dual-Channel Digital Isolators datasheet (Rev. E) Feb. 25, 2020
Technical articles How to select the right digital isolator for your design Oct. 21, 2020
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators Oct. 12, 2020
Functional safety information ISO7720-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Jun. 18, 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 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
User guide ISO77xxD Single- and Dual-Digital Isolator Evaluation Module (Rev. A) Feb. 25, 2019
Application note Considerations for Selecting Digital Isolators Jul. 24, 2018
User guide ISO77xxDWV Dual-Digital Isolator Evaluation Module Jun. 21, 2018
Application note How to reduce radiated emissions of digital isolators for systems with RF module Mar. 26, 2018
Application note How to Design Isolated Comparators for ±48V, 110V and 240V DC and AC Detection (Rev. A) Mar. 14, 2018
Application note How To Simplify Isolated 24-V PLC Digital Input Module Designs (Rev. B) Mar. 14, 2018
Application note How to Improve Speed and Reliability of Isolated Digital Inputs in Motor Drives Dec. 16, 2017
Application note Isolation Glossary (Rev. A) Sep. 19, 2017
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
The ISO7721DEVM is an evaluaiton module (EVM) used to evaluate the ISO7721 high-performance, reinforced dual-channel digital isolator in an 8-pin narrow SOIC package (package code, D). The EVM features enough test points and jumper options for you to evaluate the device with minimal (...)
Features
  • High-speed, robust EMC dual-channel digital isolator
  • Wide supply and level translation range from 2.25 V to 5.5 V
  • High signaling rate up to 100 Mbps
  • Low propagation delay of11 ns typical (5-V supplies)
  • Isolation barrier life > 25 years
EVALUATION BOARD Download
49
Description
The ISO7721DWVEVM is an evaluaiton module (EVM) used to evaluate the ISO7721 high-performance, reinforced two-channel digital isolator in an 8-pin wide-body (WB) SOIC package (package code, DWV). The EVM features enough test points and jumper options for you to evaluate the device with (...)
Features
  • High-speed, robust EMC two-channel digital isolator
  • Wide supply and level translation range from 2.25 V to 5.5 V
  • High signaling rate up to 100 Mbps
  • Low propagation delay of 11 ns typical (5-V supplies)
  • Isolation barrier life > 25 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

Design tools & simulation

SIMULATION MODEL Download
SLLM333C.ZIP (52 KB) - IBIS Model

Reference designs

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
REFERENCE DESIGNS Download
High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design
TIDA-010065 — This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for (...)
document-generic Schematic
REFERENCE DESIGNS Download
High accuracy analog input module reference design with 16-bit 1-MSPS dual simultaneous-sampling ADC
TIDA-01576 — This reference design accurately measures 16-channel AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range. This range covers protection and measurement requirements (including sampling requirements as per IEC 61850-9-2), which simplifies system design and improves (...)
document-generic Schematic
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
REFERENCE DESIGNS Download
Isolated Shunt Current Measurement with Standalone Digital Filters Reference Design
TIDA-01639 — This reference design implements a class 0.5 three phase energy measurement system with isolated shunt sensors by using isolated modulators and independent digital filters, enabling a wider choice of host microcontrollers (MCU) as integrated sync filters are no longer required. In this design (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOIC (DW) 16 View options
SOIC (DWV) 8 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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