2B

2A

1B

1A

4

5

3

GND

2Y

1Y

7

6

2

1

Copyright © 2016 Texas Instruments Incorporated

2B

2A

1B

1A

4

5

3

GND

2Y

1Y

7

6

2

1

Copyright © 2016 Texas Instruments Incorporated

2B

2A

1B

1A

4

5

3

GND

2Y

1Y

7

6

2

1

Copyright © 2016 Texas Instruments Incorporated

9

SN55451B, SN55452B, SN55453B, SN55454B

SN75451B, SN75452B, SN75453B, SN75454B

www.ti.com

SLRS021C – DECEMBER 1967 – REVISED MAY 2016

Product Folder Links: SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B

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Copyright © 1967–2016, Texas Instruments Incorporated

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

Figure 6. SNx5451B Logic Diagram (Positive Logic)

Figure 7. SNx5452B Logic Diagram (Positive Logic)

Figure 8. SNx5453B Logic Diagram (Positive Logic)