參數(shù)資料
型號(hào): 74193
廠商: Fairchild Semiconductor Corporation
元件分類: 通用總線功能
英文描述: Synchronous 4-Bit Binary Counter with Dual Clock
中文描述: 同步4位二進(jìn)制計(jì)數(shù)器雙時(shí)鐘
文件頁數(shù): 5/7頁
文件大小: 74K
代理商: 74193
5
www.fairchildsemi.com
D
AC Electrical Characteristics
From (Input)
R
L
=
2 k
Symbol
Parameter
To (Output)
C
L
=
15 pF
Min
25
C
L
=
50 pF
Min
20
Units
Max
Max
f
MAX
t
PLH
Maximum Clock Frequency
Propagation Delay Time
MHz
Count Up
26
30
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
to Carry
Count Up
to Carry
t
PHL
24
36
ns
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
Count Down
to Borrow
Count Down
24
29
ns
t
PHL
24
32
ns
HIGH-to-LOW Level Output
Propagation Delay Time
LOW-to-HIGH Level Output
to Borrow
Either Count
to Any Q
t
PLH
38
45
ns
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
Either Count
to Any Q
Load to
47
54
ns
t
PLH
40
41
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Any Q
Load to
Any Q
t
PHL
40
47
ns
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
Clear to
Any Q
35
44
ns
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