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零件编号
产品描述 (功能)
74F269(2000) 查看數據表(PDF) - Fairchild Semiconductor
零件编号
产品描述 (功能)
生产厂家
74F269
(Rev.:2000)
8-Bit Bidirectional Binary Counter
Fairchild Semiconductor
74F269 Datasheet PDF : 6 Pages
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AC Electrical Characteristics
Symbol
Parameter
f
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Maximum Clock Frequency
Propagation Delay
CP to Q
n
(Count-Up)
Propagation Delay
U/D to TC
Propagation Delay
CET to TC
Propagation Delay
CP to TC
Propagation Delay
CP to
Qn
(Count-Down)
Propagation Delay
CP to Q
n
(Load)
AC Operating Requirements
Symbol
Parameter
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
W
(H)
t
W
(L)
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
Setup Time, HIGH or LOW
Data to CP
Hold Time, HIGH or LOW
Data to CP
Setup Time, HIGH or LOW
PE to CP
Hold Time, HIGH or LOW
PE to CP
Setup Time, HIGH or LOW
CET or CEP to CP
Hold Time, HIGH or LOW
CET or CEP to CP
Clock Pulse Width, HIGH or LOW
Setup Time, HIGH or LOW
U/D to CP
Hold Time, HIGH or LOW
U/D to CP
T
A
= +
25
°
C
V
CC
= +
5.0V
C
L
=
50 pF
Min
Typ
Max
100
3.5
8.0
4.5
10.5
3.5
7.5
4.5
7.5
3.5
7.0
3.0
10.5
4.5
10.0
5.0
10.0
3.5
10.5
4.5
10.5
3.5
7.0
4.0
7.0
T
A
=
0
°
C to
+
70
°
C
V
CC
=
5.0V
C
L
=
50 pF
Min
Max
85
3.5
7.0
4.5
11.0
3.5
10.0
4.5
11.0
3.5
10.5
3.0
11.5
4.5
10.5
4.5
10.5
3.5
11.0
4.5
11.0
3.5
10.0
4.0
7.0
Units
MHz
ns
ns
ns
ns
ns
ns
T
A
= +
25
°
C
V
CC
= +
5.0V
Min
Max
3.5
3.0
1.0
1.0
5.5
5.5
0
0
6.0
8.0
0
0
3.5
3.5
8.0
6.0
0.0
0.0
T
A
=
0
°
C to
+
70
°
C
V
CC
=
5.0V
Min
Max
4.0
3.0
2.0
1.0
6.5
6.5
0
0
6.5
9.0
0
0
3.5
4.0
9.5
7.0
0.0
0.0
Units
ns
ns
ns
ns
ns
ns
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