HCF4512BEY(2002) 查看數據表（PDF） - STMicroelectronics

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HCF4512BEY
(Rev.:2002)

8 CHANNEL DATA SELECTOR

STMicroelectronics 

HCF4512B

IINPUT EQUIVALENT CIRCUIT

FUNCTIONAL DIAGRAM

PIN DESCRIPTION

PIN No

1, 2, 3, 4, 5,

6, 7, 9

11, 12, 13

10

15

14

8

16

SYMBOL NAME AND FUNCTION

D0 to D7 Channel Inputs

A, B, C

INHIBIT

3-STATE

DISABLE

SEL OUT-

PUT

VSS

VDD

Select Control

Inhibit Output

3 State Disable Output

Select Output

Negative Supply Voltage

Positive Supply Voltage

TRUTH TABLE

SELECT CONTROL

A

B

C

L

L

L

H

L

L

L

H

L

H

H

L

L

L

H

H

L

H

L

H

H

H

H

H

X

X

X

X

X

X

X : Don’t Care

Z : High Impedance

INHIBIT

L

L

L

L

L

L

L

L

H

X

3-STATE DISABLE

L

L

L

L

L

L

L

L

L

H

SELECT OUTPUT

D0

D1

D2

D3

D4

D5

D6

D7

0

Z

2/9

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