전자부품 반도체 검색엔진( 무료 PDF 다운로드 ) - 데이터시트뱅크
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7490 데이터 시트보기 (PDF) - Fairchild Semiconductor
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7490
Decade and Binary Counters
Fairchild Semiconductor
7490 Datasheet PDF : 5 Pages
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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
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4
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