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參數(shù)資料
| 型號： | 7493 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Decade and Binary Counters |
| 中文描述： | 十年和二進制計數(shù)器 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 133K |
| 代理商： | 7493 |
’90A Switching Characteristics
at V
CC
e
5V and T
A
e
25
§
C (See Section 1 for Test Waveforms and Output Load)
From (Input)
To (Output)
R
L
e
400
X
C
L
e
15 pF
Symbol
Parameter
Units
Min
Max
f
MAX
Maximum Clock
Frequency
A to Q
A
32
MHz
B to Q
B
16
t
PLH
Propagation Delay Time
Low to High Level Output
A to Q
A
16
ns
t
PHL
Propagation Delay Time
High to Low Level Output
A to Q
A
18
ns
t
PLH
Propagation Delay Time
Low to High Level Output
A to Q
D
48
ns
t
PHL
Propagation Delay Time
High to Low Level Output
A to Q
D
50
ns
t
PLH
Propagation Delay Time
Low to High Level Output
B to Q
B
16
ns
t
PHL
Propagation Delay Time
High to Low Level Output
B to Q
B
21
ns
t
PLH
Propagation Delay Time
Low to High Level Output
B to Q
C
32
ns
t
PHL
Propagation Delay Time
High to Low Level Output
B to Q
C
35
ns
t
PLH
Propagation Delay Time
Low to High Level Output
B to Q
D
32
ns
t
PHL
Propagation Delay Time
High to Low Level Output
B to Q
D
35
ns
t
PLH
Propagation Delay Time
Low to High Level Output
SET-9 to
Q
A
, Q
D
30
ns
t
PHL
Propagation Delay Time
High to Low Level Output
SET-9 to
Q
B
, Q
C
40
ns
t
PHL
Propagation Delay Time
High to Low Level Output
SET-0
Any Q
40
ns
3
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