SLRS021D December   1967  – January 2017 SN55451B , SN55452B , SN55453B , SN55454B , SN75451B , SN75452B , SN75453B , SN75454B

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Recommended Operating Conditions
    3. 7.3 Thermal Information
    4. 7.4 Electrical Characteristics
    5. 7.5 Switching Characteristics, VCC = 5 V, TA = 25°C
    6. 7.6 Dissipation Ratings
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagrams
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Community Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

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発注情報

9 Detailed Description

9.1 Overview

The SN7545xB and SN5545xB devices provide dual-output drivers with AND, NAND, NOR, or OR logic inputs. If each logic input is set to the appropriate voltage level, then the output driver will turn on, pulling the driver to ground and allowing current to flow.

9.2 Functional Block Diagrams

SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B Logic_diagram_01_slrs021.gif Figure 6. SNx5451B Logic Diagram (Positive Logic)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B Logic_diagram_02_slrs021.gif Figure 7. SNx5452B Logic Diagram (Positive Logic)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B Logic_diagram_03_slrs021.gif Figure 8. SNx5453B Logic Diagram (Positive Logic)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B Logic_diagram_04_slrs021.gif Figure 9. SNx5454B Logic Diagram (Positive Logic)

9.3 Feature Description

The SNx5451B devices allow for high current driving up to 300 mA. This family of devices have AND, NAND, OR, or NOR input logic gates to allow for a wide variety of applications. The SN7545xB devices are rated for a commercial temperature range of 0°C to 70°C, and the SN5545xB devices are rated for a military temperature range of –65°C to 125°C.

9.4 Device Functional Modes

Table 1, Table 2, Table 3, and Table 4 list the functional modes of the SNx545xB.

SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B logic_symbol_01_slrs021.gif Figure 10. SNx5451B Logic Symbol

Table 1. SNx5451B Function Table

A B Y (1)
L L L (on state)
L H L (on state)
H L L (on state)
H H H (off state)
(1) Positive logic: Y = AB or NOT(A + B)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B logic_symbol_02_slrs021.gif Figure 11. SNx5452B Logic Symbol

Table 2. SNx5452B Function Table

A B Y (1)
L L H (off state)
L H H (off state)
H L H (off state)
H H L (on state)
(1) Positive logic: Y = AB or A + B
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B logic_symbol_03_slrs021.gif Figure 12. SNx5453B Logic Symbol

Table 3. SNx5453B Function Table

A B Y (1)
L L L (on state)
L H H (off state)
H L H (off state)
H H H (off state)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B logic_symbol_04_slrs021.gif Figure 13. SNx5454B Logic Symbol

Table 4. SNx5454B Function Table

A B Y (1)
L L H (off state)
L H L (on state)
H L L (on state)
H H L (on state)
(1) Positive logic: Y = A+B or A B
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B schematic_01_slrs021.gif Figure 14. SNx5451B Schematic (Each Driver)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B schematic_03_slrs021.gif Figure 16. SNx5453B Schematic (Each Driver)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B schematic_02_slrs021.gif Figure 15. SNx5452B Schematic (Each Driver)
SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B schematic_04_slrs021.gif Figure 17. SNx5454B Schematic (Each Driver)