2

Functional Diagram

TRUTH TABLE

OPERATING MODE

INPUTS

OUTPUTS

MR

CP

DS1

DS2

RESET (CLEAR)

L

X

X

X

L

L - L

Shift

H

↑

ll

L

H

↑

lh

L

H

↑

hlL

H

↑

hh

H

H= High Voltage Level.

h= High Voltage Level One Set-up Time Prior To The Low-to-high Clock Transition.

l= Low Voltage Level One Set-up Time Prior To The Low-to-high Clock Transition.

L= Low Voltage Level.

X= Don’t Care.

↑= Transition from Low to High Level.

3

4

5

6

11

13

12

10

1

DS1

CP

MR

98

2

DS2

GND = 7

CD54HC164, CD74HC164, CD54HCT164, CD74HCT164