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DM74LS161AM 数据表(PDF) 7 Page - Fairchild Semiconductor

部件名 DM74LS161AM
功能描述  Synchronous 4-Bit Binary Counters
Download  10 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

DM74LS161AM 数据表(HTML) 7 Page - Fairchild Semiconductor

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DM74LS163A Recommended Operating Conditions
Note 8: CL = 15 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V.
Note 9: CL = 50 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V.
DM74LS163A Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 10: All typicals are at VCC = 5V, TA = 25°C.
Note 11: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 12: ICCH is measured with the load HIGH, then again with the load LOW, with all other inputs HIGH and all outputs OPEN.
Note 13: ICCL is measured with the clock input HIGH, then again with the clock input LOW, with all other inputs LOW and all outputs OPEN.
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 8)
0
25
MHz
Clock Frequency (Note 9)
0
20
MHz
tW
Pulse Width
Clock
20
6
ns
(Note 8)
Clear
20
9
Pulse Width
Clock
25
ns
(Note 9)
Clear
25
tSU
Setup Time
Data
20
8
(Note 8)
Enable P
25
17
ns
Load
25
15
Setup Time
Data
20
(Note 9)
Enable P
30
ns
Load
30
tH
Hold Time
Data
0
−3
ns
(Note 8)
Others
0
−3
Hold Time
Data
5
ns
(Note 9)
Others
5
tREL
Clear Release Time (Note 8)
20
ns
Clear Release Time (Note 9)
25
ns
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
(Note 10)
Max
Units
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max
2.7
3.4
V
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
0.35
0.5
Output Voltage
VIL = Max, VIH = Min
V
IOL = 4 mA, VCC = Min
0.25
0.4
II
Input Current @ Max
VCC = Max
Enable T
0.2
Input Voltage
VI = 7V
Clock, Clear
0.2
mA
Load
0.2
Others
0.1
IIH
HIGH Level
VCC = Max
Enable T
40
Input Current
VI = 2.7V
Load
40
µA
Clock, Clear
40
Others
20
IIL
LOW Level
VCC = Max
Enable T
−0.8
Input Current
VI = 0.4V
Clock, Clear
−0.8
mA
Load
−0.8
Others
−0.4
IOS
Short Circuit Output Current
VCC = Max (Note 11)
−20
−100
mA
ICCH
Supply Current with Outputs HIGH VCC = Max (Note 12)
18
31
mA
ICCL
Supply Current with Outputs LOW
VCC = Max (Note 13)
18
32
mA


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