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DM74LS161A Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part No. DM74LS161A
Description  Synchronous 4-Bit Binary Counters
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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DM74LS161A Datasheet(HTML) 5 Page - Fairchild Semiconductor

 
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Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
DM74LS161A Recommended Operating Conditions
Note 2: CL = 15 pF, RL = 2 kΩ, TA = 25°C and VCC = 5.5V.
Note 3: CL = 50 pF, RL = 2 kΩ, TA = 25°C and VCC = 5.5V.
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
0
°C to +70°C
Storage Temperature Range
−65°C to +150°C
Symbol
Parameter
Min
Nom
Max
Units
VCC
Supply Voltage
4.75
5
5.25
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−0.4
mA
IOL
LOW Level Output Current
8
mA
fCLK
Clock Frequency (Note 2)
0
25
MHz
Clock Frequency (Note 3)
0
20
MHz
tW
Pulse Width
Clock
20
6
ns
(Note 2)
Clear
20
9
Pulse Width
Clock
25
ns
(Note 3)
Clear
25
tSU
Setup Time
Data
20
8
(Note 2)
Enable P
25
17
ns
Load
25
15
Setup Time
Data
20
(Note 3)
Enable P
30
ns
Load
30
tH
Hold Time
Data
0
−3
ns
(Note 2)
Others
0
−3
Hold Time
Data
5
ns
(Note 3)
Others
5
tREL
Clear Release Time (Note 2)
20
ns
Clear Release Time (Note 3)
25
ns
TA
Free Air Operating Temperature
0
70
°C


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