SLLSEU0G November   2016  – October 2024 ISO7740-Q1 , ISO7741-Q1 , ISO7742-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Power Ratings
    6. 5.6  Insulation Specifications
    7. 5.7  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics—5-V Supply
    10. 5.10 Supply Current Characteristics—5-V Supply
    11. 5.11 Electrical Characteristics—3.3-V Supply
    12. 5.12 Supply Current Characteristics—3.3-V Supply
    13. 5.13 Electrical Characteristics—2.5-V Supply 
    14. 5.14 Supply Current Characteristics—2.5-V Supply
    15. 5.15 Switching Characteristics—5-V Supply
    16. 5.16 Switching Characteristics—3.3-V Supply
    17. 5.17 Switching Characteristics—2.5-V Supply
    18. 5.18 Insulation Characteristics Curves
    19. 5.19 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Electromagnetic Compatibility (EMC) Considerations
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device I/O Schematics
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
        1. 8.2.3.1 Insulation Lifetime
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 PCB Material
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Related Links
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

3 Description

The ISO774x-Q1 automotive devices are high-performance, quad-channel digital isolators with 5700VRMS (DWW package), 5000VRMS (DW package) and 3000VRMS (DBQ package) isolation ratings per UL 1577. This family of devices has reinforced insulation ratings according to VDE, CSA, TUV and CQC.

The ISO774x-Q1 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-controller driving applications and to reduce power consumption. The ISO7740-Q1 device has all four channels in the same direction, the ISO7741-Q1 device has three forward and one reverse-direction channels, and the ISO7742-Q1 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.

Package Information
PART NUMBER(1)PACKAGEPACKAGE SIZE(2)
ISO7741-Q1DWW (SOIC, 16)10.30mm × 14.0mm
ISO7740-Q1
ISO7741-Q1
ISO7742-Q1		DW (SOIC, 16)10.30mm × 7.50mm
DBQ (SSOP, 16)4.90mm × 3.90mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
ISO7740-Q1 ISO7741-Q1 ISO7742-Q1 Simplified Schematic
VCCI=Input supply, VCCO=Output supply
GNDI=Input ground, GNDO=Output ground
Simplified Schematic