Philips Semiconductors
Product specification
8-bit parallel-in/serial-out shift register
74HC/HCT165
FUNCTION TABLE
Note
1. H = HIGH voltage level
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
LOW-to-HIGH clock transition
X = don’t care
↑
= LOW-to-HIGH clock transition
OPERATING MODES
INPUTS
Q
n
REGISTERS
OUTPUTS
PL
CE
CP
D
S
D
0
-D
7
Q
0
Q
1
-Q
6
Q
7
Q
7
parallel load
L
L
X
X
X
X
X
X
L
H
L
H
L - L
H - H
L
H
H
L
serial shift
H
H
L
L
↑
↑
l
h
X
X
L
H
q
0
-q
5
q
0
-q
5
q
6
q
6
q
6
q
6
hold “do nothing”
H
H
X
X
X
q
0
q
1
-q
6
q
7
q
7
Fig.4 Functional diagram.
Fig.5 Logic diagram.
PS212W
subwoofer
33
Summary of Contents for PS212W
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