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Номер в каталоге
Компоненты Описание
DM7490A Просмотр технического описания (PDF) - Fairchild Semiconductor
Номер в каталоге
Компоненты Описание
производитель
DM7490A
Decade and Binary Counters
Fairchild Semiconductor
DM7490A Datasheet PDF : 5 Pages
1
2
3
4
5
AC Switching Characteristics
at V
CC
=
5V and T
A
=
25
°
C
Symbol
Parameter
From (Input)
To (Output)
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
t
PHL
Maximum Clock
Frequency
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
High to Low Level Output
A to Q
A
B to Q
B
A to Q
A
A to Q
A
A to Q
D
A to Q
D
B to Q
B
B to Q
B
B to Q
C
B to Q
C
B to Q
D
B to Q
D
SET-9 to
Q
A
, Q
D
SET-9 to
Q
B
, Q
C
SET-0
Any Q
R
L
=
400
Ω
C
L
=
15 pF
Min
Max
32
16
16
18
48
50
16
21
32
35
32
35
30
40
40
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
www.fairchildsemi.com
4
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