CD74HCT4094 参数 Datasheet PDF下载

CD74HC4094, CD74HCT4094

Functional Diagram

2

DATA

CP

3

8-STAGE

SHIFT

REGISTER

9

QS

1

10

QS

2

1

STROBE

8-BIT

STORAGE

REGISTER

4

5

6

7

15

OE

THREE-

STATE

OUTPUT

14

13

12

11

Q

0

Q

1

Q

2

Q

3

Q

4

Q

5

Q

6

Q

7

GND = 8

V

CC

= 16

TRUTH TABLE

INPUTS

CP

↑

↓

↑

↑

↑

↓

NOTES:

3. H = High Voltage Level, L = Low Voltage Level, X = Don’t Care, NC = No charge, Z = High Impedance Off-state,

↑

= Transition from Low to High Level,

↓

= Transition from High to Low.

4. At the positive clock edge the information in the seventh register stage is transferred to the 8th register stage and QS

1

output.

OE

L

L

H

H

H

H

STR

X

X

L

H

H

H

D

X

X

X

L

H

H

PARALLEL OUTPUTS

Q

0

Z

Z

NC

L

H

NC

Q

n

Z

Z

NC

Q

n

-1

Q

n

-1

NC

SERIAL OUTPUTS

QS

1

(NOTE 4)

Q’6

NC

Q’6

Q’6

Q’6

NC

QS

2

NC

Q

7

NC

NC

NC

Q

7

2