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參數(shù)資料
| 型號： | MM54C193 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Synchronous 4-Bit Up/Down Decade Counter |
| 中文描述： | 同步4位向上/向下十年計數(shù)器 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 140K |
| 代理商： | MM54C193 |
AC Electrical Characteristics
*
T
A
e
25
§
C, C
L
e
50 pF, unless otherwise noted
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
pd
Propagation Delay Time to Q
from Count Up or Down
V
CC
e
5V
V
CC
e
10V
250
100
400
160
ns
ns
t
pd
Propagation Delay Time to Q
Borrow from Count Down
V
CC
e
5V
V
CC
e
10V
120
50
200
80
ns
ns
t
pd
Propagation Delay Time to
Carry from Count Up
V
CC
e
5V
V
CC
e
10V
120
50
200
80
ns
ns
t
S
Time Prior to Load that Data
Must be Present
V
CC
e
5V
V
CC
e
10V
100
30
160
50
ns
ns
t
W
Minimum Clear Pulse Width
V
CC
e
5V
V
CC
e
10V
300
120
480
190
ns
ns
t
W
Minimum Load Pulse Width
V
CC
e
5V
V
CC
e
10V
100
40
160
65
ns
ns
t
pd0
, t
pd1
Propagation Delay Time to Q
from Load
V
CC
e
5V
V
CC
e
10V
300
120
480
190
ns
ns
t
W
Minimum Count Pulse Width
V
CC
e
5V
V
CC
e
10V
120
35
200
80
ns
ns
f
MAX
Maximum Count Frequency
V
CC
e
5V
V
CC
e
10V
2.5
6
4
MHz
MHz
10
t
r
, t
f
Count Rise and Fall Time
V
CC
e
5V
V
CC
e
10V
15
5
m
s
m
s
C
IN
Input Capacitance
(Note 2)
5
pF
C
PD
*
AC Parameters are guaranteed by DC correlated testing.
Power Dissipation Capacitance
(Note 3)
100
pF
Note 1:
‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. Except for ‘‘Operating Temperature Range’’
they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device
operation.
Note 2:
Capacitance is guaranteed by periodic testing.
Note 3:
C
PD
determines the no load AC power consumption of any CMOS device. For complete explanation, see 54C/74C Family Characteristics, Application Note
AN-90.
Cascading Packages
TL/F/5901–2
Guaranteed Noise Margin
as a Function of V
CC
TL/F/5901–3
3
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| MM54C193 WAF | 制造商:Texas Instruments 功能描述: |
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| MM54C193W/883 | 制造商:Texas Instruments 功能描述: |
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