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參數(shù)資料
| 型號(hào)： | 74AC378DMQR |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Parallel D Register with Enable |
| 中文描述： | 并行D注冊(cè)與啟用 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大小： | 175K |
| 代理商： | 74AC378DMQR |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
CC
)
DC Input Diode Current (I
IK
)
V
I
e b
0.5V
V
I
e
V
CC
a
0.5V
DC Input Voltage (V
I
)
DC Output Diode Current (I
OK
)
V
O
e b
0.5V
V
O
e
V
CC
a
0.5V
DC Output Voltage (V
O
)
DC Output Source
or Sink Current (I
O
)
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
)
Storage Temperature (T
STG
)
Junction Temperature (T
J
)
CDIP
PDIP
b
0.5V to
a
7.0V
b
20 mA
a
20 mA
b
0.5V to V
CC
a
0.5V
b
20 mA
a
20 mA
b
0.5V to V
CC
a
0.5V
g
50 mA
g
50 mA
b
65
§
C to
a
150
§
C
175
§
C
140
§
C
Note 1:
Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recom-
mend operation of FACT
TM
circuits outside databook specifications.
Recommended Operating
Conditions
Supply Voltage (V
CC
)
’AC
2.0V to 6.0V
Input Voltage (V
I
)
Output Voltage (V
O
)
Operating Temperature (T
A
)
74AC
54AC
0V to V
CC
0V to V
CC
b
40
§
C to
a
85
§
C
b
55
§
C to
a
125
§
C
Minimum Input Edge Rate (
D
V/
D
t)
’AC Devices
V
IN
from 30% to 70% of V
CC
V
CC
@
3.3V, 4.5V, 5.5V
125 mV/ns
DC Characteristics for ’AC Family Devices
74AC
54AC
74AC
Symbol
Parameter
V
CC
(V)
T
A
e a
25
§
C
T
A
e
T
A
e
Units
Conditions
b
55
§
C to
a
125
§
C
b
40
§
C to
a
85
§
C
Typ
Guaranteed Limits
V
IH
Minimum High Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
2.1
3.15
3.85
2.1
3.15
3.85
2.1
3.15
3.85
V
OUT
e
0.1V
or V
CC
b
0.1V
V
V
IL
Maximum Low Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
0.9
1.35
1.65
0.9
1.35
1.65
0.9
1.35
1.65
V
OUT
e
0.1V
or V
CC
b
0.1V
V
V
OH
Minimum High Level
Output Voltage
3.0
4.5
5.5
2.99
4.49
5.49
2.9
4.4
5.4
2.9
4.4
5.4
2.9
4.4
5.4
I
OUT
e b
50
m
A
V
*
V
IN
e
V
IL
or V
IH
3.0
4.5
5.5
2.56
3.86
4.86
2.4
3.7
4.7
2.46
3.76
4.76
b
12 mA
b
24 mA
b
24 mA
V
I
OH
V
OL
Maximum Low Level
Output Voltage
3.0
4.5
5.5
0.002
0.001
0.001
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
I
OUT
e
50
m
A
V
*
V
IN
e
V
IL
or V
IH
3.0
4.5
5.5
0.36
0.36
0.36
0.5
0.5
0.5
0.44
0.44
0.44
12 mA
24 mA
24 mA
V
I
OL
I
IN
Maximum Input
Leakage Current
5.5
g
0.1
g
1.0
g
1.0
m
A
V
I
e
V
CC
, GND
*
All outputs loaded; thresholds on input associated with output under test.
3
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