SLLSFC6E November   2021  – July 2025 ISOUSB111

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
    10. 5.10 Switching Characteristics
    11. 5.11 Insulation Characteristics Curves
    12. 5.12 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 Test Circuits
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Power Supply Options
      2. 7.3.2 Power Up
      3. 7.3.3 Symmetric Operation, Dual-Role Port, and Role-Reversal
      4. 7.3.4 Connect and Speed Detection
      5. 7.3.5 Disconnect Detection
      6. 7.3.6 Reset
      7. 7.3.7 LS/FS Message Traffic
      8. 7.3.8 L2 Power Management State (Suspend) and Resume
      9. 7.3.9 L1 Power Management State (Sleep) and Resume
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Typical Application
      1. 8.1.1 Isolated Host or Hub
      2. 8.1.2 Isolated Peripheral - Self-Powered
      3. 8.1.3 Isolated Peripheral - Bus-Powered
      4. 8.1.4 Application Curve
        1. 8.1.4.1 Insulation Lifetime
    2. 8.2 Power Supply Recommendations
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
        1. 8.3.1.1 Layout Example
        2. 8.3.1.2 PCB Material
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information

7.2 Functional Block Diagram

A simplified functional block diagram of ISOUSB111 is shown in Figure 7-1. The device comprises the following:
  1. Transmit and receive circuits and pull-up and pull-down resistors according to the USB standard.
  2. Digital logic to handle bi-directional communication, and various state-transitions.
  3. Internal LDOs to generate V3P3Vx supplies from the VBUSx supplies.
  4. Galvanic isolation.
ISOUSB111 ISOUSB111 Simplified Functional Block Diagram Figure 7-1 ISOUSB111 Simplified Functional Block Diagram