Philips Semiconductors

Product specification

74F674

16-bit serial/parallel-in, serial-out shift register (3-State)

1989 Feb 05

2

LOGIC SYMBOL

89

10

GND = Pin 12

1

2

SF01189

CP

CS

D0 D1

D4 D5 D6 D7

D3

D2

11 13

14

7

16 17

18

D8 D9

D12 D13 D14 D15

D11

D10

19

20

21

22

15

23

3

5

M

R/W

SO

6

FUNCTION TABLE

CONTROL INPUTS

SI/O

OPERATING

CS

R/W

M

CP

SI/O

STATUS

OPERATING

MODE

H

X

X

X

High Z

Hold

L

L

X

↓

Data in

Serial load

L

H

L

↓

Data out

Serial output with

recirculation

L

H

H

↓

Active

Parallel load;

no shifting

H = High voltage level

L = Low voltage level

X = Don’t care

↓ = High-to-Low transition of designed input

LOGIC SYMBOL (IEEE/IEC)

SF01190

SRG16

0

1

M

0

3

3, 4D

5

3

1

2

8

9

10

11

13

14

7

16

17

18

19

20

21

22

15

23

3, 4D

3, 4D

3, 4D

&

&

EN

C4(0/1/2)

6

LOGIC DIAGRAM

VCC =

Pin 24

GND =

Pin 12

SF01191

PE

D0–D15

Q15

CP

Q0

D0–D15 (7–11, 13–23)

5

1

2

3

6

SI/O

M

CS

CP

R/W