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PS212W subwoofer
Philips Semiconductors
8-bit parallel-in/serial-out shift register
FUNCTION TABLE
OPERATING MODES
parallel load
serial shift
hold "do nothing"
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
Fig.4 Functional diagram.
INPUTS
PL
CE
CP
L
X
X
L
X
X
↑
H
L
↑
H
L
H
H
X
Fig.5 Logic diagram.
Q
D
D
-D
Q
S
0
7
0
X
L
L
X
H
H
l
X
L
h
X
H
X
X
q
0
33
Product specification
74HC/HCT165
REGISTERS
OUTPUTS
n
Q
-Q
Q
1
6
7
L - L
L
H - H
H
q
-q
q
0
5
6
q
-q
q
0
5
6
q
-q
q
1
6
7
Q
7
H
L
q
6
q
6
q
7
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