SCLS520E August   2003  – January 2015 SN74LV4051A-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 Switching Characteristics VCC = 3.3 V ± 0.3 V
    7. 6.7 Switching Characteristics VCC = 5 V ± 0.5 V
    8. 6.8 Analog Switch Characteristics
    9. 6.9 Operating 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

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|16
  • DW|16
  • D|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

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 unit (MCU).

9.2 Typical Application

scls520_ex_multiplexer_use.pngFigure 11. Example of Multiplexer Use With Analog Sensors and the ADC of an MCU

9.2.1 Design Requirements

Designing with the SN74LV4051A-Q1 device requires a stable input voltage between 2 V (see Recommended Operating Conditions for details) and 5.5 V. Another important design consideration is the characteristics of the signal being multiplexed, to ensure no important information is lost due to timing or incompatibility with this device.

9.2.2 Detailed Design Procedure

Normally, processing eight different analog signals would require eight separate ADCs, but Figure 11 shows how to achieve this using only one ADC and four GPIOs (general-purpose input/outputs).