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54AC191 参数 Datasheet PDF下载

54AC191图片预览
型号: 54AC191
PDF下载: 下载PDF文件 查看货源
内容描述: 加/减计数器预置电压和纹波时钟 [Up/Down Counter with Preset and Ripple Clock]
分类和应用: 计数器时钟
文件页数/大小: 10 页 / 211 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
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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
= −0.5V
V
I
= V
CC
+ 0.5V
DC Input Voltage (V
I
)
DC Output Diode Current (I
OK
)
V
O
= −0.5V
V
O
= V
CC
+ 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
)
−0.5V to +7.0V
−20 mA
+20 mA
−0.5V to V
CC
+ 0.5V
−20 mA
+20 mA
−0.5V to V
CC
+ 0.5V
Junction Temperature (T
J
)
CDIP
175˚C
Recommended Operating
Conditions
Supply Voltage (V
CC
)
Input Voltage (V
I
)
Output Voltage (V
O
)
Operating Temperature (T
A
)
54AC
Minimum Input Edge Rate (∆V/∆t)
’AC Devices
V
IN
from 30% to 70% of V
CC
V
CC
@
3.3V 4.5V, 5.5V
2.0V to 6.0V
0V to V
CC
0V to V
CC
−55˚C to +125˚C
±
50 mA
±
50 mA
−65˚C to +150˚C
125 mV/ns
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, output/input loading variables. National does not recommend
operation of FACT
circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
Symbol
V
IH
Parameter
Minimum High Level Input
Voltage
Maximum Low Level Input
Voltage
Minimum High Level Output
Voltage
V
CC
(V)
3.0
4.5
5.5
V
IL
3.0
4.5
5.5
V
OH
3.0
4.5
5.5
54AC
T
A
= −55˚C to +125˚C
Guaranteed Limits
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
(Note 2) V
IN
= V
IL
or V
IH
3.0
4.5
5.5
V
OL
Maximum Low Level Output
Voltage
3.0
4.5
5.5
2.4
3.7
4.7
0.1
0.1
0.1
(Note 2) V
IN
= V
IL
or V
IH
3.0
4.5
5.5
I
IN
I
OLD
I
OHD
I
CC
Maximum Input
Leakage Current
(Note 3) Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5
5.5
5.5
50
−50
80.0
mA
mA
µA
V
OLD
= 1.65V Max
V
OHD
= 3.85V Min
V
IN
= V
CC
or GND
5.5
0.50
0.50
0.50
V
µA
V
I
= V
CC
, GND
12 mA
I
OL
24 mA
24 mA
V
I
OUT
= 50 µA
V
−12 mA
I
OH
−24 mA
−24 mA
V
I
OUT
= −50 µA
V
V
OUT
= 0.1V
or V
CC
− 0.1V
V
V
OUT
= 0.1V
or V
CC
− 0.1V
Units
Conditions
±
1.0
5
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