SCLS116H December   1982  – December 2015 SN54HC165 , SN74HC165

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, TA = 25°C
    6. 6.6  Electrical Characteristics, SN54HC165
    7. 6.7  Electrical Characteristics, SN74HC165
    8. 6.8  Switching Characteristics, TA = 25°C
    9. 6.9  Switching Characteristics, SN54HC165
    10. 6.10 Switching Characteristics, SN74HC165
    11. 6.11 Timing Requirements, TA = 25°C
    12. 6.12 Timing Requirements, SN54HC165
    13. 6.13 Timing Requirements, SN74HC165
    14. 6.14 Operating Characteristics
    15. 6.15 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 Table
  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 Related Links
    3. 12.3 Community Resources
      1. 12.3.1 Trademarks
      2. 12.3.2 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DB|16
  • PW|16
  • NS|16
  • N|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

The SNx4HC165 is an 8-bit shift register that can be used as a serializer in order to reduce the number of connection needed when transmitting signals between boards or to the device. SNx4HC165 can be used to expand inputs for processors with limited GPIOs for examples basic keyboard interface to the controller. SNx4HC165 allows inputs to be load into the shift registers and clock is used to shift data to the processor. Multiple SNx4HC165 can be cascaded together to allow more digital inputs to be interfaced with single processor by connecting output of the cascaded shift register QH to serial input SER of the SNx4HC165 and so on. Note this application does not allow the communication to be bi-direction in nature as data can only be read by the processor not written back.

9.2 Typical Application

SN54HC165 SN74HC165 appsinfo1.gif Figure 5. Typical Application Diagram for SN74HC165

9.2.1 Design Requirements

Ensure that the incoming clock rising edge meets the criteria in Recommended Operating Conditions.

9.2.2 Detailed Design Procedure

Ensure that input and output voltages do not exceed ratings in Absolute Maximum Ratings.

Input voltage threshold information for each device can be found in the Electrical Characteristics tables in the Specifications section.

Detailed timing requirements for each device can be found in Timing Requirements tables in the Specifications section.

9.2.3 Application Curve

SN54HC165 SN74HC165 D001_scls116.gif Figure 6. Propagation Delay vs Supply Voltage at TA = 25°C