SLVSM25 June   2026 ISO7741U , ISO7742U

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Power Ratings
    6. 6.6  Safety-Related Certifications
    7. 6.7  Safety Limiting Values
    8. 6.8  Electrical Characteristics—5-V Supply
    9. 6.9  Supply Current Characteristics—5-V Supply
    10. 6.10 Electrical Characteristics—3.3-V Supply
    11. 6.11 Supply Current Characteristics—3.3-V Supply
    12. 6.12 Electrical Characteristics—2.5-V Supply 
    13. 6.13 Supply Current Characteristics—2.5-V Supply
    14. 6.14 Switching Characteristics—5-V Supply
    15. 6.15 Switching Characteristics—3.3-V Supply
    16. 6.16 Switching Characteristics—2.5-V Supply
    17. 6.17 Insulation Characteristics Curves
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Electromagnetic Compatibility (EMC) Considerations
    4. 8.4 Device Functional Modes
    5. 8.5 Device I/O Schematics
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Mechanical Data

3 Description

The ISO774xU devices are digital isolators in ultra-wide package with >21.2mm creepage and clearance distance. They are designed for applications requiring high working voltages at high altitudes with a single stage digital isolator, removing the need for a second isolator and isolated power island. The devices are certified by VDE, TUV, UL, and CQC.

The ISO774xU devices provide high EMC performance while isolating CMOS or LVCMOS digital I/Os. ISO774xU uses SiO2 as the isolation barrier. Each isolation channel has a logic input and output buffer separated by the insulation barrier. These devices come with enable pins that can be used to put the respective outputs in high impedance.

TheISO7741Uand ISO7741UF devices have one reverse-direction channel.The ISO7742U and ISO7742UF devices have two reverse-direction channels.

In the event of input power or signal loss, the default output is high for devices without the suffix F and low for devices with the suffix F. See the Device Functional Modes section for further details.

Package Information
PART NUMBER(1) PACKAGE(1) PACKAGE SIZE(2)

ISO7741U, ISO7741UF

ISO7742UF

 Ultra-Wide-SSOP (DUW-16)(3) 10.3mm × 26.15mm
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
(3) Please refer to Packaging Information table on the Package Option Addendum page in the Mechanical, Packaging, and Orderable Information section for Production or Preproduction status for specific device and package.
ISO7741U ISO7742U Simplified Schematic
VCCI=Input supply, VCCO=Output supply
GNDI=Input ground, GNDO=Output ground
Simplified Schematic