ZHCSX74M December   2003  – October 2024 SN74AVC2T45

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. 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  Switching Characteristics: VCCA = 1.2 V
    7. 5.7  Switching Characteristics: VCCA = 1.5 V ±0.1 V
    8. 5.8  Switching Characteristics: VCCA = 1.8 V ±0.15 V
    9. 5.9  Switching Characteristics: VCCA = 2.5 V ±0.2 V
    10. 5.10 Switching Characteristics: VCCA = 3.3 V ±0.3 V
    11. 5.11 Operating Characteristics
    12. 5.12 Typical Characteristics
      1. 5.12.1 Typical Propagation Delay (A to B) vs Load Capacitance, TA = 25°C, VCCA = 1.2 V
      2. 5.12.2 Typical Propagation Delay (A to B) vs Load Capacitance, TA = 25°C, VCCA = 1.5 V
      3. 5.12.3 Typical Propagation Delay (A-to-B) vs Load Capacitance, TA = 25°C, VCCA = 1.8 V
      4. 5.12.4 Typical Propagation Delay (A to B) vs Load Capacitance, TA = 25°C, VCCA = 2.5 V
      5. 5.12.5 Typical Propagation Delay (A to B) vs Load Capacitance, TA = 25°C, VCCA = 3.3 V
  7. Parameter Measurement Information
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 VCC Isolation
      2. 7.3.2 2-Rail Design
      3. 7.3.3 IO Ports are 4.6-V Tolerant
      4. 7.3.4 Partial-Power-Down Mode
    4. 7.4 Device Functional Modes
  9. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Unidirectional Logic Level-Shifting Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Bidirectional Logic Level-Shifting Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Enable Times
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DCU|8
  • DDF|8
  • YZP|8
  • DCT|8
散热焊盘机械数据 (封装 | 引脚)
订购信息

说明

这款 2 位同相总线收发器使用两个独立的可配置电源轨。A 端口用于跟踪 VCCA,可支持 1.2V 至 3.6V 范围内的任何电源电压。B 端口用于跟踪 VCCB,可支持 1.2V 至 3.6V 范围内的任何电源电压。因此可在 1.2V、1.5V、1.8V、2.5V 和 3.3V 电压节点之间进行通用的低压双向转换和电平转换。

SN74AVC2T45 旨在实现两条数据总线间的异步通信。方向控制(DIR 引脚)输入的逻辑电平会激活 B 端口或 A 端口输出。当 B 端口输出被激活时,此器件将数据从 A 总线发送到 B 总线,而当 A 端口输出被激活时,此器件将数据从 B 总线发送到 A 总线。A 端口和 B 端口上的输入电路一直处于活动状态并且必须施加一个逻辑高或低电平,从而防止内部 CMOS 结构上产生过大的漏电流。

封装信息
器件型号 封装(1) 封装尺寸(标称值)
SN74AVC2T45DCT DCT(SSOP,8) 2.95mm × 2.80mm
SN74AVC2T45DCU DCU(VSSOP,8) 2.30mm × 2.00mm
SN74AVC2T45YZP YZP(DSBGA,8) 1.89mm × 0.89mm
SN74AVC2T45DDF

DDF(SOT-23,8)

2.90mm × 1.60mm

有关所有可用封装,请参阅节 11
SN74AVC2T45 逻辑图(正逻辑)
引脚编号仅适用于 DCT 和 DCU 封装。
逻辑图(正逻辑)