74HC165 Philips, 74HC165 Datasheet - Page 4

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74HC165

Manufacturer Part Number
74HC165
Description
8-bit parallel-in/serial-out shift register
Manufacturer
Philips
Datasheet

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Philips Semiconductors
FUNCTION TABLE
Note
1. H = HIGH voltage level
December 1990
parallel load
serial shift
hold “do nothing”
OPERATING MODES
8-bit parallel-in/serial-out shift register
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition
q = lower case letters indicate the state of the referenced output one set-up time prior to the
X = don’t care
= LOW-to-HIGH clock transition
LOW-to-HIGH clock transition
L
L
H
H
H
PL
X
X
L
L
H
CE
X
X
X
INPUTS
Fig.4 Functional diagram.
CP
Fig.5 Logic diagram.
X
X
l
h
X
D
S
4
L
H
X
X
X
D
0
-D
7
L
H
L
H
q
0
Q
Q
0
n
REGISTERS
Q
H - H
q
q
q
L - L
1
0
0
1
-Q
-q
-q
-q
74HC/HCT165
5
5
6
6
Product specification
L
H
q
q
q
6
6
7
Q
OUTPUTS
7
H
L
q
q
q
6
6
7
Q
7

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