SCLS467F FEBRUARY   2003  – June 2016 SN74LV123A-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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  Timing Requirements — VCC = 3.3 V ± 0.3 V
    7. 6.7  Timing Requirements — VCC = 5 V ± 0.5 V
    8. 6.8  Switching Characteristics — VCC = 3.3 V ± 0.3 V
    9. 6.9  Switching Characteristics — VCC = 5 V ± 0.5 V
    10. 6.10 Operating Characteristics
    11. 6.11 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 Power-Down Considerations
    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
        1. 9.2.1.1 Output Pulse Duration
        2. 9.2.1.2 Retriggering Data
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  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 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • PW|16
サーマルパッド・メカニカル・データ
発注情報

11 Layout

11.1 Layout Guidelines

Inputs must never float when using multiple bit logic devices. In many cases, functions or parts of functions of digital logic devices are unused. For example, when only two inputs of a triple-input AND gate are used or only three of the four buffer gates are used. Such input pins must not be left unconnected because the undefined voltages at the outside connections result in undefined operational states. All unused inputs of digital logic devices must be connected to a high or low bias to prevent them from floating. The logic level that must be applied to any particular unused input depends on the function of the device. Generally they will be tied to GND or VCC whichever makes more sense or is more convenient. Floating outputs is generally acceptable, unless the part is a transceiver.

11.2 Layout Example

SN74LV123A-Q1 layoutex1.png Figure 19. Layout Recommendation
SN74LV123A-Q1 layout_scds357.gif Figure 20. Trace Example