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74F163A Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. 74F163A
Description  4-bit binary counter
Download  14 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74F163A Datasheet(HTML) 5 Page - NXP Semiconductors

 
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Philips Semiconductors
Product specification
74F161A, 74F163A
4-bit binary counters
1996 Jan 29
5
74F163A MODE SELECT – FUNCTION TABLE
INPUTS
OUTPUTS
OPERATING MODE
SR
CP
CEP
CET
PE
Dn
Qn
TC
OPERATING MODE
l
X
X
X
X
L
L
Reset (clear)
h
X
X
l
l
L
L
Parallel load
h
X
X
l
h
H
(2)
Parallel load
h
h
h
h
X
count
(2)
Count
h
X
l
X
h
X
qn
(2)
Hold (do nothing)
h
X
X
l
h
X
qn
L
Hold (do nothing)
H
=
High voltage level
h
=
High voltage level one setup prior to the Low-to-High clock transition
L
=
Low voltage level
l
=
Low voltage level one setup prior to the Low-to-High clock transition
qn
=
Lower case letters indicate the state of the referenced output prior to the Low-to-High clock transition
X
=
Don’t care
=
Low-to-High clock transition
(1)
=
The TC output is High when CET is High and the counter is at Terminal Count (HHHH for 74F161A)
(2)
=
The TC output is High when CET is High and the counter is at Terminal Count (HHHH for 74F163A)
74F161A LOGIC DIAGRAM
R
D
CP
Q
Q
R
D
CP
Q
Q
R
D
CP
Q
Q
R
D
CP
Q
Q
14
Q0
13
Q1
12
Q2
11
Q3
15
TC
6
D3
5
D2
4
D1
3
D0
7
CEP
10
CET
9
PE
1
MR
2
CP
SF00662
VCC = Pin 16
GND = Pin 8


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