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DM74LS257 Datasheet(PDF) 2 Page - Fairchild Semiconductor

No. de pieza DM74LS257
Descripción Electrónicos  3-STATE Quad 2-Data Selectors/Multiplexers
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Fabricante Electrónico  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS257 Datasheet(HTML) 2 Page - Fairchild Semiconductor

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2
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.
Recommended Operating Conditions
DC Electrical Characteristics
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 and all possible inputs grounded, while achieving the stated output conditions.
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
−2.6
mA
IOL
LOW Level Output Current
24
mA
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 2)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
VOH
HIGH Level Output Voltage
VIL = Max, VIH = Min
2.4
3.1
V
VOL
LOW Level Output
VIL = Max, VIH = Min
0.35
0.5
V
Voltage
IOL = 12 mA, VCC = Min
0.25
0.4
II
Input Current @ Max
VCC = Max,
Select
0.2
mA
Input Voltage
VI = 7V
Other
0.1
IIH
HIGH Level Input
VCC = Max,
Select
40
µA
Current
VI = 2.7V
Other
20
IIL
LOW Level Input
VCC = Max,
Select
−0.8
mA
Current
VI = 0.4V
Other
−0.4
IOZH
OFF-State Output Current with
VCC = Max, VO = 2.7V
20
µA
HIGH Level Output Voltage Applied
VIH = Min, VIL = Max
IOZL
OFF-State Output Current with
VCC = Max, VO = 0.4V
−20
µA
LOW Level Output Voltage Applied
VIH = Min, VIL = Max
IOS
Short Circuit Output Current
VCC = Max (Note 3)
−20
−100
mA
ICCH
Supply Current with Outputs HIGH
VCC = Max (Note 4)
5.9
10
mA
ICCL
Supply Current with Outputs LOW
VCC = Max (Note 4)
9.2
16
mA
ICCZ
Supply Current with Outputs Disabled VCC = Max (Note 4)
12
19
mA


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