ZHCSDW4D February   2011  – September 2022 SN74GTL2003

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
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Provides Bidirectional Voltage Translation With No Direction Control Required
      2. 8.3.2 Flow Through Pinout
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Bidirectional Translation
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Sizing Pullup Resistors
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Unidirectional Down Translation
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Sizing Pullup Resistors
      3. 9.2.3 Unidirectional Up Translation
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
          1. 9.2.3.2.1 Sizing Pullup Resistors
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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
9.2.2.2.1 Sizing Pullup Resistors

The pullup resistor value should limit the current through the pass transistor when it is in the on state to about 15 mA. This ensures a pass voltage of 260 mV to 350 mV. If the current through the pass transistor is higher than 15 mA, the pass voltage also is higher in the on state. To set the current through each pass transistor at 15 mA, the pullup resistor value is calculated as:

Equation 2. GUID-6912D26C-3B10-4600-81DE-F2B2F2DB3ABE-low.gif

Table 9-2 provides resistor values for various reference voltages and currents at 15 mA, 10 mA, and 3 mA. The resistor value shown in the +10% column, or a larger value, should be used to ensure that the pass voltage of the transistor would be 350 mV or less. The external driver must be able to sink the total current from the resistors on both sides of the GTL device at 0.175 V, although the 15 mA only applies to current flowing through the SN74GTL2003.

Table 9-2 Pullup Resistor Values(1)(2)(3)(4)
PULLUP RESISTOR VALUE (Ω)
VOLTAGE15 mA10 mA3 mA
NOMINAL+10%NOMINAL+10%NOMINAL+10%
5.0 V31034146551215501705
3.3 V1972172953259831082
2.5 V143158215237717788
1.8 V97106145160483532
1.5 V7785115127383422
1.2 V57638594283312
(1) H = HIGH voltage level, L = LOW voltage level, X = do not care.
(2) Calculated for VOL = 0.35 V
(3) Assumes output driver VOL = 0.175 V at stated current
(4) +10% to compensate for VDD range and resistor tolerance
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