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参数资料
| 型号： | 74B2529 |
| 文件页数： | 2/8页 |
| 文件大小： | 132K |
| 代理商： | 74B2529 |
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 Temperature
64 Grade
74 Grade
7.0V
7.0V
b
40
§
C to
a
85
§
C
0
§
C to
a
70
§
C
b
65
§
C to
a
150
§
C
V
64
52
45
Storage Temperature Range
Typical
i
JA
Airflow
0 LFM
225 LFM
500 LFM
M
89
71
63
§
C/W
§
C/W
§
C/W
Recommended Operating
Conditions
Supply Voltage (V
CC
)
Input Rise and Fall Times
(0.8V to 2.0V)
4.5V to 5.5V
9.6 ns max
Free Air Operating Temperature (T
A
)
64 Grade
74 Grade
b
40
§
C to
a
85
§
C
0
§
C to
a
70
§
C
Note: The Absolule Maximum Ratings are those values be-
yond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits. The para-
metric values defined in the DC and AC Electrical Charac-
teristics tables are not guaranteed at the absolute maximum
ratings. The Recommended Operating Conditions will de-
fine the conditions for actual device operation.
DC Electrical Characteristics
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
3 mA, V
CC
e
4.5V
2.4
V
I
OH
e
48 mA, V
CC
e
4.5V
2.0
V
OL
Low Level Output Voltage
V
CC
e
4.5V, I
OL
e
64 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
0.5
b
0.75
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
’2529
V
CC
e
5.5V
Outputs High
24
35
mA
Outputs Low
45
65
mA
C
IN
Input Capacitance
V
CC
e
5.5V
5
pF
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