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参数资料
| 型号： | 74B305 |
| 文件页数： | 2/6页 |
| 文件大小： | 122K |
| 代理商： | 74B305 |
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 (V
CC
)
Input Voltage (V
I
)
Operating Free Air Temperature
7.0V
7.0V
0
§
C to
a
70
§
C
b
65
§
C to
a
150
§
C
Storage Temperature Range
Typical
i
JA
Airflow (LFM)
Jedec SOIC (M) Package
0
225
96
500
86
§
C/W
§
C/W
118
Recommended Operating
Conditions
Supply Voltage (V
CC
)
Input Rise and Fall Times
(0.8V to 2.0V)
4.5V to 5.5V
2 ns max
Free Air Operating Temperature (T
A
)
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 DC and AC Electrical Char-
acteristics tables are not guaranteed at the absolute maxi-
mum ratings. The Recommended Operating Conditions will
define the conditions for actual device operation.
0
§
C to 70
§
C
DC Electrical Characteristics CGS64/74B304
Over recommended operating conditions unless specified otherwise. All typical values are measured at V
CC
e
5V, T
A
e
25
§
C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IK
Input Clamp Voltage
V
CC
e
4.5V, I
I
e b
18 mA
b
1.2
V
V
IH
Minimum Input
High Level Voltage
2.0
V
V
IL
Maximum Input
Low Level Voltage
0.8
V
V
OH
High Level Output Voltage
I
OH
e b
2 mA, V
CC
e
4.5V
V
CC
b
2
V
I
OH
e
24 mA, V
CC
e
4.5V
2.0
V
OL
Low Level Output Voltage
V
CC
e
4.5V, I
OL
e
48 mA
0.35
0.5
V
I
I
Input Current
@
Max
Input Voltage
V
CC
e
5.5V, V
IH
e
7V
0.1
mA
I
IH
High Level Input Current
V
CC
e
5.5V, V
IH
e
2.7V
20
m
A
I
IL
Low Level Input Current
V
CC
e
5.5V, V
IL
e
0.4V
b
0.1
b
0.50
mA
I
O
Output Drive Current
V
CC
e
5.5V, V
O
e
2.25V
b
50
b
150
mA
I
CC
Supply Current
V
CC
e
5.5V
Outputs High
20
30
mA
Outputs Low
42
55
mA
C
IN
Input Capacitance
V
CC
e
5V
5
pF
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