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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(yè)數(shù)： | 4/7頁(yè) |
| 文件大小： | 74K |
| 代理商： | 74193 |
www.fairchildsemi.com
4
D
Absolute Maximum Ratings
(Note 1)
Note 1:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Note 2:
C
L
=
15 pF, R
L
=
2 k
, I
A
=
25
°
C and V
CC
=
5V.
Note 3:
C
L
=
50 pF, R
L
=
2 k
, I
A
=
25
°
C and V
CC
=
5V.
Note 4:
T
A
=
25
°
C and V
CC
=
5V.
DC Electrical Characteristics
Note 5:
All typicals are at V
CC
=
5V, T
A
=
25
°
C.
Note 6:
Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 7:
I
CC
is measured with all outputs open, CLEAR and LOAD inputs grounded, and all other inputs at 4.5V.
Operating Free Air Temperature Range
Supply Voltage
Input Voltage
Storage Temperature Range
0
°
C to
+
70
°
C
7V
7V
65
°
C to
+
125
°
C
Symbol
Parameter
Min
4.75
2
Nom
5
Max
5.25
Units
V
V
V
mA
mA
V
CC
V
IH
V
IL
I
OH
I
OL
f
CLK
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Clock Frequency (Note 2)
Clock Frequency (Note 3)
Pulse Width of any Input (Note 4)
Data Setup Time (Note 4)
Data Hold Time (Note 4)
Enable Time to Clock (Note 4)
Free Air Operating Temperature
0.8
0.4
8
25
0
MHz
t
W
t
SU
t
H
t
EN
T
A
20
20
0
40
0
ns
ns
ns
ns
°
C
70
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 5)
V
I
V
OH
Input Clamp Voltage
V
CC
=
Min, I
I
=
18 mA
V
CC
=
Min, I
OH
=
Max
V
IL
=
Max, V
IH
=
Min
V
CC
=
Min, I
OL
=
Max
V
IL
=
Max, V
IH
=
Min
I
OL
=
4 mA, V
CC
=
Min
V
CC
=
Max, V
I
=
7V
V
CC
=
Max, V
I
=
2.7V
V
CC
=
Max, V
I
=
0.4V
V
CC
=
Max
(Note 6)
V
CC
=
Max (Note 7)
1.5
V
HIGH Level Output
Voltage
LOW Level Output
2.5
2.7
3.4
3.4
0.25
V
V
OL
0.4
Voltage
0.35
0.25
0.5
0.4
0.1
V
I
I
I
IH
I
IL
I
OS
Input Current @ Max Input Voltage
mA
μ
A
mA
HIGH Level Input Current
LOW Level Input Current
Short Circuit
20
0.4
100
100
34
20
20
mA
Output Current
Supply Current
I
CC
19
mA
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