SLLSFW6A March   2024  – June 2026 ISOUSB211-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
    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  HS Message Traffic
      9. 7.3.9  Equalization and Pre-Emphasis
      10. 7.3.10 L2 Power Management State (Suspend) and Resume
      11. 7.3.11 L1 Power Management State (Sleep) and Resume
      12. 7.3.12 HS Test Mode Support
      13. 7.3.13 CDP Advertising
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Isolated Host or Hub
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
      2. 8.2.2 Isolated Peripheral - Self-Powered
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
      3. 8.2.3 Isolated Peripheral - Bus-Powered
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
      4. 8.2.4 Application Curve
        1. 8.2.4.1 Insulation Lifetime
    3. 8.3 Meeting USB2.0 HS Eye-Diagram Specifications
    4. 8.4 Thermal Considerations
      1. 8.4.1 VBUS / V3P3V Power
      2. 8.4.2 VCCx / V1P8Vx Power
      3. 8.4.3 Example Configuration 1
      4. 8.4.4 Example Configuration 2
      5. 8.4.5 Example Configuration 3
    5. 8.5 Power Supply Recommendations
    6. 8.6 Layout
      1. 8.6.1 Layout Guidelines
        1. 8.6.1.1 PCB Material
      2. 8.6.2 Layout Example
  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

7.1 Overview

ISOUSB211-Q1 is a galvanically-isolated USB2.0 compliant repeater supporting Low Speed (1.5Mbps), Full Speed (12Mbps) and High Speed (480Mbps) signaling rates. The device supports automatic speed and connection detection, reflection of pullups/pulldowns, and link power management allowing drop-in USB hub, host, peripheral, and cable isolation. Most microcontrollers integrate the USB PHY, and so offer only D+ and D- bus lines as external pins. ISOUSB211-Q1 can isolate these pins from the USB bus without needing any other intervention from the microcontroller. The device also supports automatic role reversal. If, after disconnect, a new connect is detected on the Upstream facing port, then the Upstream and Downstream port definitions are reversed. The ISOUSB211-Q1 has inbuilt programmable equalization to cancel signal loss caused by board traces, which helps in meeting USB2.0 high-speed TX and RX eye-diagram templates. High Speed (HS) Test Mode entry is also automatically detected, as required by the USB2.0 standard, to enable HS compliance tests.

ISOUSB211-Q1 is available in reinforced isolation option with isolation withstand voltage of 5700VRMS respectively, and with surge test voltage of 12.8kVPK respectively. The device can operate completely off a 4.25V to 5.5V supply (USB VBUS power) or from local 3.3V and 1.8- supplies, if available, on both side 1 and side 2. This flexibility in supply voltages allows optimization for thermal performance based on power rails available in the system.