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PI74FCT191T Datasheet(PDF) 2 Page - Pericom Semiconductor Corporation

Part # PI74FCT191T
Description  High Speed CMOS Presettable Synchronous 4-Bit Binary Counters
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Manufacturer  PERICOM [Pericom Semiconductor Corporation]
Direct Link  http://www.pericom.com
Logo PERICOM - Pericom Semiconductor Corporation

PI74FCT191T Datasheet(HTML) 2 Page - Pericom Semiconductor Corporation

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background image
2
PS2084B
01/13/97
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PI74FCT191T
(25
Ω SERIES) PI74FCT2191T
4-BIT BINARY COUNTERS
Product Pin Description
Truth Table(1)
Product Pin Configurations
(All Pins Top View)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16-Pin
Q16
S16
Notes:
1. H = High Voltage Level
L= Low Voltage Level
X = Don’t Care
Z= High Impedance
D1
Q1
Q0
CE
U/D
Q2
Q3
GND
VCC
D0
CP
RC
TC
PL
D2
D3
e
m
a
N
n
i
PO
/
In
o
it
p
i
r
c
s
e
D
0
D
-
3
DI
st
u
p
n
I
a
t
a
D
0
Q
-
3
QO
st
u
p
t
u
O
a
t
a
D
L
PI
d
a
o
l
e
r
P
D
/
UI
t
c
el
e
S
n
w
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D
/
p
U
E
CI
el
b
a
n
E
t
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C
P
CI
k
c
o
l
C
t
n
u
o
C
C
TO
t
n
u
o
C
l
a
n
i
m
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e
T
C
RO
k
c
o
l
C
el
p
p
i
R
s
t
u
p
n
Is
t
u
p
t
u
O
L
PD
/
UP
CE
CI
D0
Q
-
3
QC
TC
Rn
o
it
c
n
u
F
L
XXX
0
D
-
3
D0
D
-
3
DX
X
a
t
a
D
d
a
o
L
HL
LX
1
+
QL
H
p
U
t
n
u
o
C
HH
LX
1
-
QL
H
n
w
o
D
t
n
u
o
C
H
XXH
X
Q
XX
ti
b
i
h
n
I
t
n
u
o
C
HL
Η
LX
F
H
H
1
1
1
1
=
p
U
t
n
u
o
C
HL
LX
FH
1
1
1
1
=
p
U
t
n
u
o
C
H
L
XXX
E
-
0L
H
p
U
t
n
u
o
C
1
1
1
1
HHH
L
X
0
H
H
0
0
0
0
=
n
w
o
D
t
n
u
o
C
HH
L
X
0
H
0
0
0
0
=
n
w
o
D
t
n
u
o
C
H
H
XXX
F
-
1L
H
n
w
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D
t
n
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C
0
0
0
0


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