SCLS469F March   2003  – December 2014 SN74LV4052A-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 Operating Characteristics
    6. 6.6 Electrical Characteristics
    7. 6.7 Switching Characteristics VCC = 3.3 V ± 0.3 V
    8. 6.8 Switching Characteristics VCC = 5 V ± 0.5 V
    9. 6.9 Analog Switch 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
    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 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

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

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

9.1 Application Information

A multiplexer is used in applications where multiple signals share a resource. In the example below, several different sensors are connected to the analog-to-digital converter (ADC) of a microcontroller (MCU).

9.2 Typical Application

schematic.pngFigure 11. Typical Application Schematic

9.2.1 Design Requirements

Normally processing 8 different analog signals would require 8 separate ADCs, but this figure shows how to achieve this using only 2 ADCs and 3 GPIOs (general purpose input/outputs).

9.2.2 Detailed Design Procedure

To design with the SN74LV4052A-Q1, a stable input voltage between 2V (seeRecommended Operating Conditions for details) and 5.5 V must be available. Another important design consideration would be the characteristics of the signal that is being multiplexed to make sure no important information is lost due to timing or voltage level incompatibility with this device.