ZHCSJI7 March   2019 SN74AXCH4T245

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     功能方框图
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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 = 0.7 ± 0.05 V
    7. 6.7  Switching Characteristics, VCCA = 0.8 ± 0.04 V
    8. 6.8  Switching Characteristics, VCCA = 0.9 ± 0.045 V
    9. 6.9  Switching Characteristics, VCCA = 1.2 ± 0.1 V
    10. 6.10 Switching Characteristics, VCCA = 1.5 ± 0.1 V
    11. 6.11 Switching Characteristics, VCCA = 1.8 ± 0.15 V
    12. 6.12 Switching Characteristics, VCCA = 2.5 ± 0.2 V
    13. 6.13 Switching Characteristics, VCCA = 3.3 ± 0.3 V
    14. 6.14 Operating Characteristics: TA = 25°C
    15. 6.15 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  Standard CMOS Inputs
      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
      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
      10. 8.3.10 Bus-Hold Data Inputs
    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
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 相关文档　
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.1 Load Circuit and Voltage Waveforms

Unless otherwise noted, all input pulses are supplied by generators having the following characteristics:

  • f = 1 MHz
  • ZO = 50 Ω
  • dv/dt ≤ 1 ns/V

SN74AXCH4T245 SN74AXC1T45_PMI_DIAGRAM.gif
1. CL includes probe and jig capacitance.
Figure 5. Load Circuit

Table 1. Load Circuit Conditions

Parameter VCCO RL CL S1 VTP
Δt/Δv Input transition rise or fall rate 0.65 V – 3.6 V 1 MΩ 15 pF Open N/A
tpd Propagation (delay) time 1.1 V – 3.6 V 2 kΩ 15 pF Open N/A
0.65 V – 0.95 V 20 kΩ 15 pF Open N/A
ten, tdis Enable time, disable time 3 V – 3.6 V 2 kΩ 15 pF 2 × VCCO 0.3 V
1.65 V – 2.7 V 2 kΩ 15 pF 2 × VCCO 0.15 V
1.1 V – 1.6 V 2 kΩ 15 pF 2 × VCCO 0.1 V
0.65 V – 0.95 V 20 kΩ 15 pF 2 × VCCO 0.1 V
ten, tdis Enable time, disable time 3 V – 3.6 V 2 kΩ 15 pF GND 0.3 V
1.65 V – 2.7 V 2 kΩ 15 pF GND 0.15 V
1.1 V – 1.6 V 2 kΩ 15 pF GND 0.1 V
0.65 V – 0.95 V 20 kΩ 15 pF GND 0.1 V
SN74AXCH4T245 SN74AXC1T45_PMI_DIAGRAM2.gif
  1. VCCI is the supply pin associated with the input port.
  2. VOH and VOL are typical output voltage levels that occur with specified RL, CL, and S1
Figure 6. Propagation Delay
SN74AXCH4T245 InputTransRate_PMI.gif
  1. VCCI is the supply pin associated with the input port.
  2. VOH and VOL are typical output voltage levels that occur with specified RL, CL, and S1
Figure 7. Input Transition Rise or Fall Rate
SN74AXCH4T245 SN74AXC8T245_ENABLE_TIME_AND_DISABLE_TIME.gif
1. Output waveform on the condition that input is driven to a valid Logic Low.
2. Output waveform on the condition that input is driven to a valid Logic High.
3. VCCO is the supply pin associated with the output port.
4. VOH and VOL are typical output voltage levels with specified RL, CL, and S1.
Figure 8. Enable Time and Disable Time
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