DM74LS85 查看數據表（PDF） - Fairchild Semiconductor
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DM74LS85 Datasheet PDF : 6 Pages
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Absolute Maximum Ratings(Note 1)
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range
−65°C to +150°C
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.
Recommended Operating Conditions
Symbol
VCC
VIH
VIL
IOH
IOL
TA
Parameter
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Free Air Operating Temperature
Min
Nom
4.75
5
2
0
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
Input Clamp Voltage
VOH
HIGH Level
Output Voltage
VOL
LOW Level
Output Voltage
II
Input Current @ Max
Input Voltage
VCC = Min, II = −18 mA
VCC = Min, IOH = Max
VIL = Max, VIH = Min
VCC = Min, IOL = Max
VIL = Max, VIH = Min
IOL = 4 mA, VCC = Min
VCC = Max
VI = 7V
2.7
A<B
A>B
Others
IIH
HIGH Level
Input Current
VCC = Max
VI = 2.7V
A<B
A>B
Others
IIL
LOW Level
Input Current
VCC = Max
VI = 0.4V
A<B
A>B
Others
IOS
Short Circuit Output Current
VCC = Max (Note 3)
−20
ICC
Supply Current
VCC = Max (Note 4)
Note 2: All typicals are at VCC = 5V, TA = 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4: ICC is measured with all outputs OPEN, A = B grounded and all other inputs at 4.5V.
Max
Units
5.25
V
V
0.8
V
−0.4
mA
8
mA
70
°C
Typ
(Note 2)
3.4
0.35
0.25
10
Max
−1.5
0.5
0.4
0.1
0.1
0.3
20
20
60
−0.4
−0.4
−1.2
−100
20
Units
V
V
V
mA
µA
mA
mA
mA
3
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