ZHCSMS5 November   2020 SN74LXC8T245

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  Switching Characteristics, VCCA = 1.2 ± 0.1 V
    7. 6.7  Switching Characteristics, VCCA = 1.5 ± 0.1 V
    8. 6.8  Switching Characteristics, VCCA = 1.8 ± 0.15 V
    9. 6.9  Switching Characteristics, VCCA = 2.5 ± 0.2 V
    10. 6.10 Switching Characteristics, VCCA = 3.3 ± 0.3 V
    11. 6.11 Switching Characteristics, VCCA = 5.0 ± 0.5 V
    12. 6.12 Switching Characteristics: Tsk, TMAX
    13. 6.13 Operating Characteristics
    14. 6.14 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Load Circuit and Voltage Waveforms
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 CMOS Schmitt-Trigger Inputs with Integrated Pulldowns
        1. 8.3.1.1 I/O's with Integrated Dynamic Pull-Down Resistors
        2. 8.3.1.2 Control Inputs with Integrated Static Pull-Down Resistors
      2. 8.3.2 Balanced High-Drive CMOS Push-Pull Outputs
      3. 8.3.3 Partial Power Down (Ioff)
      4. 8.3.4 VCC Isolation and VCC Disconnect (Ioff-float)
      5. 8.3.5 Over-voltage Tolerant Inputs
      6. 8.3.6 Glitch-free Power Supply Sequencing
      7. 8.3.7 Negative Clamping Diodes
      8. 8.3.8 Fully Configurable Dual-Rail Design
      9. 8.3.9 Supports High-Speed Translation
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Regulatory Requirements
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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1 特性

  • 完全可配置的双电源轨设计可允许各个端口在 1.1V 至 5.5V 范围内运行
  • 稳健、无干扰电源定序
  • 在 3.3V 至 5.0V 范围内，支持高达 420Mbps 的速率
  • 施密特触发输入可实现慢速或高噪声输入
  • 带有集成动态下拉电阻器的 I/O 有助于减少外部组件数量。
  • 带集成静态下拉电阻器的控制输入允许浮动控制输入
  • 高驱动强度（在 5V 时最高达 32mA）
  • 低功耗
    • 最大值 4µA (25°C)
    • 最大值 12µA（–40°C 至 125°C）
  • VCC 隔离和 Vcc 断开 (Ioff-float) 特性
    • 如果任何一个 VCC 电源电压 < 100mV 或已断开，则所有 I/O 会下拉，然后成为高阻抗状态
  • Ioff 支持局部断电模式运行
  • 兼容 LVC 系列电平转换器
  • 控制逻辑（DIR 和OE）以 VCCA 为基准
  • 工作温度范围为 –40°C 至 +125°C
  • 闩锁性能超出 100mA，符合 JESD 78 II 类规范的要求
  • ESD 保护性能超过 JESD 22 规范要求
    • 4000V 人体放电模型
    • 1000V 充电器件模型