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I74F161AD 데이터 시트보기 (PDF) - Philips Electronics

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I74F161AD
Philips
Philips Electronics 
I74F161AD Datasheet PDF : 14 Pages
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Philips Semiconductors
4-bit binary counters
Product specification
74F161A, 74F163A
STATE DIAGRAM
0
1
2
3
4
15
5
14
6
13
7
12
11
10
9
8
SF00664
APPLICATIONS
+VCC
CLOCK
D0 D1 D2 D3
PE
CEP
CET 74F163A TC
CP
SR Q0 Q1 Q2 Q3
SF00665
Figure 1. Maximum count modifying scheme
Terminal count = 6
H H = Enable count
or
L L = Disable count
PE D0 D1 D2 D3
CEP
CET 74F163A TC
CP
SR Q0 Q1 Q2 Q3
PE D0 D1 D2 D3
CEP
CET 74F163A TC
CP
SR Q0 Q1 Q2 Q3
PE D0 D1 D2 D3
CEP
CET 74F163A TC
CP
SR Q0 Q1 Q2 Q3
PE D0 D1 D2 D3
CEP
CET 74F163A TC
CP
SR Q0 Q1 Q2 Q3
PE D0 D1 D2 D3
CEP
CET 74F163A TC
CP
SR Q0 Q1 Q2 Q3
CP
Figure 2. Synchronous multistage counting scheme
SF00666
74F161A MODE SELECT – FUNCTION TABLE
INPUTS
MR
CP
CEP
CET
PE
Dn
L
X
X
X
X
X
H
X
X
l
l
H
X
X
l
h
H
h
h
h
X
H
X
l
X
h
X
H
X
X
l
h
X
OUTPUTS
Qn
TC
L
L
L
L
H
(1)
count
(1)
qn
(1)
qn
L
OPERATING MODE
Reset (clear)
Parallel load
Count
Hold (do nothing)
1996 Jan 29
4

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