SCLS403I April   1998  – March 2015 SN74LV164A

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  Timing Requirements: VCC = 2.5 V ± 0.2 V
    7. 6.7  Timing Requirements: VCC = 3.3 V ± 0.3 V
    8. 6.8  Timing Requirements: VCC = 5 V ± 0.5 V
    9. 6.9  Switching Characteristics: VCC = 2.5 V ± 0.2 V
    10. 6.10 Switching Characteristics: VCC = 3.3 V ± 0.3 V
    11. 6.11 Switching Characteristics: VCC = 5 V ± 0.5 V
    12. 6.12 Noise Characteristics
    13. 6.13 Operating Characteristics
    14. 6.14 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 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 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • D|14
  • RGY|14
  • DB|14
  • PW|14
  • DGV|14
  • NS|14
散热焊盘机械数据 (封装 | 引脚)
订购信息

8 Detailed Description

8.1 Overview

The SNx4LV164A devices are 8-bit parallel-out serial shift registers designed for 2-V to 5.5-V VCC operation.

These devices feature NAND-gated serial (A and B) inputs and an asynchronous clear (CLR) input. The gated serial inputs permit complete control over incoming data, as a low at either input inhibits entry of the new data and resets the first flip-flop to the low level at the next clock pulse. A high-level input enables the other input, which then determines the state of the first flip-flop. Data at the serial inputs can be changed while the clock is high or low, provided the minimum setup time requirements are met. Clocking occurs on the low-to-high-level transition of the clock (CLK) input.

8.2 Functional Block Diagram

SN54LV164A SN74LV164A logic_cls403.gifFigure 5. Logic Diagram (Positive Logic)

8.3 Feature Description

The wide operating range allows the device to be used in a variety of systems that use different logic levels. The low propagation delay allows fast switching and higher speeds of operation. In addition, the low ground bounce stabilizes the performance of non-switching outputs while another output is switching.

8.4 Device Functional Modes

Table 1. Function Table(1)(2)

INPUTS OUTPUTS
CLR CLK A B QA QB ... QH
L X X X L L L
H L X X QA0 QB0 QH0
H ↑ H H H QAn QGn
H ↑ L X L QAn QGn
H ↑ X L L QAn QGn
(1) QA0, QB0, QH0 = the level of QA, QB, or QH, respectively, before the indicated steady-state input conditions were established.
(2) QAn, QGn = the level of QA or QG before the most recent ↑ transition of the clock: indicates a 1-bit shift.