MC74VHCT244A 查看數據表（PDF） - ON Semiconductor

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MC74VHCT244A

Octal Bus Buffer/Line Driver with 3−State Outputs

ON Semiconductor 

MC74VHCT244A

A1 2

A2 4

A3 6

DATA

INPUTS

A4 8

B1 11

B2 13

B3 15

B4 17

18 YA1

16 YA2

14 YA3

12 YA4

9 YB1

NONINVERTING

OUTPUTS

7 YB2

5 YB3

3 YB4

OUTPUT

ENABLES

OEA 1

OEB 19

Figure 1. Logic Diagram

OEA 1

A1 2

YB4 3

A2 4

YB3 5

A3 6

YB2 7

A4 8

YB1 9

GND 10

20 VCC

19 OEB

18 YA1

17 B4

16 YA2

15 B3

14 YA3

13 B2

12 YA4

11 B1

Figure 2. Pin Assignment

FUNCTION TABLE

Inputs

Outputs

OEA, OEB

A, B

YA, YB

L

LL

L

HH

H

XZ

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