JBL ES250PW, Руководство по обслуживанию

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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.
ES250PW
34
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