參數(shù)資料
型號: DM74LS393
廠商: Fairchild Semiconductor Corporation
元件分類: 通用總線功能
英文描述: Dual 4-Bit Binary Counter
中文描述: 雙4位二進(jìn)制計數(shù)器
文件頁數(shù): 4/6頁
文件大小: 56K
代理商: DM74LS393
www.fairchildsemi.com
4
D
Switching Characteristics
at V
CC
=
5V and T
A
=
25
°
C
R
L
=
2 k
Symbol
Parameter
From (Input)
C
L
=
15 pF
Min
25
C
L
=
50 pF
Min
20
Units
To (Output)
A to Q
A
Max
Max
f
MAX
t
PLH
Maximum Clock Frequency
Propagation Delay Time
MHz
A to Q
A
20
24
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
t
PHL
A to Q
A
20
30
ns
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
A to Q
D
60
87
ns
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
A to Q
D
60
87
ns
t
PHL
Clear to Any Q
39
45
ns
HIGH-to-LOW Level Output
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