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參數資料
| 型號： | 9308 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual 4-Bit Latch(雙通道4位鎖存器) |
| 中文描述： | 雙4位鎖存器（雙通道4位鎖存器） |
| 文件頁數： | 2/6頁 |
| 文件大小： | 121K |
| 代理商： | 9308 |
Absolute Maximum Ratings
(Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
7V
Input Voltage
5.5V
Operating Free Air Temperature Range
MIL
COM
b
55
§
C to
a
125
§
C
0
§
C to
a
70
§
C
b
65
§
C to
a
150
§
C
Storage Temperature Range
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Recommended Operating Conditions
Symbol
Parameter
Military
Commercial
Units
Min
Nom
Max
Min
Nom
Max
V
CC
Supply Voltage
4.5
5
5.5
4.75
5
5.25
V
V
IH
High Level Input
Voltage
2
2
V
V
IL
Low Level Input
Voltage
0.8
0.8
V
I
OH
High Level Output
Current
b
0.8
b
0.8
mA
I
OL
Low Level Output
Current
16
16
mA
T
A
Free Air Operating
Temperature
b
55
125
0
70
§
C
t
s
(H)
Setup Time HIGH, D
n
to E
n
6
10
ns
t
h
(H)
Hold Time HIGH, D
n
to E
n
4
b
2.0
ns
t
s
(L)
Setup Time LOW, D
n
to E
n
10
12
ns
t
h
(L)
Hold Time LOW, D
n
to E
n
4
8
ns
t
w
(L)
E
n
Pulse Width LOW
18
18
ns
t
w
(L)
MR Pulse Width LOW
18
18
ns
t
rec
Recovery Time, MR to E
n
10
8
ns
Electrical Characteristics
over recommended operating free air temperature (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
V
I
Input Clamp Voltage
V
CC
e
Min, I
I
e b
18 mA
V
CC
e
Min, I
OH
e
Max,
V
IL
e
Max, V
IH
e
Min
V
CC
e
Min, I
OL
e
Max
V
IH
e
Min, V
IL
e
Max
V
CC
e
Max, V
I
e
5.5V
b
1.5
V
V
OH
High Level Output
Voltage
2.4
V
V
OL
Low Level Output
Voltage
0.4
V
I
I
Input Current
@
Max
Input Voltage
1
mA
I
IH
High Level Input
Current
V
CC
e
Max, V
I
e
2.4V
40
m
A
I
IL
Low Level Input
Current
V
CC
e
Max, V
I
e
0.4V
b
1.6
mA
I
OS
Short Circuit
Output Current
V
CC
e
Max
(Note 2)
MIL
b
20
b
70
mA
COM
b
20
b
57
I
CC
Note 1:
All typicals are at V
CC
e
5V, T
A
e
25
§
C.
Note 2:
Not more than one output should be shorted at a time, and the duration should not exceed one second.
Supply Current
V
CC
e
Max (Note 3)
100
mA
Note 3:
I
CC
is measured with all outputs open and all inputs grounded.
2
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