JAJSGL8E December   2014  – October 2024 TCA9617B

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  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 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7.   Parameter Measurement Information
  8. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Bidirectional Level Translation
      2. 6.3.2 Low to High Transition Characteristics
      3. 6.3.3 High-to-Low Transition Characteristics
    4. 6.4 Device Functional Modes
  9. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Standard Application
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Pullup Resistor Sizing
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Star Application
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
      3. 7.2.3 Series Application
        1. 7.2.3.1 Design Requirements
        2. 7.2.3.2 Detailed Design Procedure
        3. 7.2.3.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  10. 8 Device and Documentation Support
    1. 8.1 ドキュメントの更新通知を受け取る方法
    2. 8.2 サポート・リソース
    3. 8.3 商標
    4. 8.4 静電気放電に関する注意事項
    5. 8.5 用語集
  11. 9 Revision History
  12. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

6.3.2 Low to High Transition Characteristics

Figure 6-2 depicts the offset voltage on the B side of the device. As shown in Figure 6-2 the target releases and the B-side rises, and rises to 0.5V and stays there until the A-side rises above 30% of VCCA. This effect can cause the low level signal to have a pedestal. Once the voltage on the A-side crosses 30% of VCCA, the B-side begins to rise to VCCB.

Due to nature of the B-side pedestal and the static offset voltage, there is a slight overshoot as the B-side rises from being externally driven low to the 0.5V offset. The TCA9617B is designed to control this behavior provided the system is designed with rise times greater than 20ns. Therefore; care must be taken to limit the pull-up strength when devices with rise time accelerators are present on the B side. Excessive overshoot on the B-side pedestal can cause devices with rise time accelerators to trip prematurely if the overshoot is more than accelerator thresholds.