ZHCSQZ0A August   2022  – November 2022 TMUXHS221

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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  Electrical Characteristics
    6. 6.6  High-Speed Performance Parameters
    7. 6.7  Switching Characteristics
    8. 6.8  Typical Characteristics – S-Parameters
    9. 6.9  Typical Characteristics – Eye Diagrams
    10.     16
    11. 6.10 Typical Characteristics – RON
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Output Enable and Power Savings
      2. 7.3.2 Data Line Biasing
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Routing Debug Signals to USB Port
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Systems Examples
      1. 8.3.1 PCIe Clock Muxing
      2. 8.3.2 USB-C SBU Muxing
      3. 8.3.3 Switching USB Port
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Documentation
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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8.2.1.3 Application Curves

Figure 8-2 and Figure 8-3 show eye diagrams for USB 2.0 signals through calibration traces (without device) and TMUXHS221 channel. A combination of very low channel ON resistance, high bandwidth, very low reflection (retun loss), and low added jitter from the device allows 480 MBps USB 2.0 HS signals to stay almost unattenuated. Many system platforms struggle to pass USB 2.0 compliance due to high loss. TMUXHS221 allows insertion of an analog mux device in the signal path without creating any additional signal integrity challenge.

GUID-20220215-SS0I-W28H-T8NX-T34KXWVX8H35-low.pngFigure 8-2 USB 2.0 HS Compliance Eye in TI Evaluation Board – Through Calibration Traces
GUID-20220215-SS0I-RLKX-DQCQ-23VXWFNGVVBL-low.pngFigure 8-3 USB 2.0 HS Compliance Eye in TI Evaluation Board – Through TMUXHS221 Channel