SCLS429K MAY   1999  – November 2016 SN74LV4052A

UNLESS OTHERWISE NOTED, this document contains 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 = 2.5 V ± 0.2 V
    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  Switching Characteristics: Analog
    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
    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. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resource
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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  • PW|16
  • NS|16
  • RGY|16
  • N|16
  • D|16
  • DGV|16
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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

Typical applications for the SN74LV4052A include signal gating, chopping, modulation or demodulation (modem), and signal multiplexing for analog-to-digital and digital-to-analog conversion systems.

9.2 Typical Application

SN74LV4052A typ_application.gif Figure 13. Typical I2C Multiplexing Application

9.2.1 Design Requirements

Designing with the SN74LV4052A device requires a stable input voltage between 2 V and 5.5 V (see Recommended Operating Conditions for details). Another important design consideration are the characteristics of the signal being multiplexed which ensures no important information is lost due to timing or incompatibility with this device.

9.2.2 Detailed Design Procedure

The SN74LV4052A dual 1- to 4-channel multiplexer is ideal for I2C selection. The I2C data and clock lines are selected using A,B select lines from the MCU. The pullup resistors are selected based on the capability of the driver. Low pullup resistor results in faster rise time; however, it generates additional current during the low state into the driver. See to the Recommended Operating Conditions of the datasheet for the input transition rates (VIH and VIL) of the CMOS inputs.

9.2.3 Application Curve

SN74LV4052A D002_scls429.gif Figure 14. Maximum Propagation Delay vs Vcc