DM74S257N View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
DM74S257N Datasheet PDF : 5 Pages
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Absolute Maximum Ratings(Note 1)
Supply Voltage
7V
Input Voltage
5.5V
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
Max
4.75
5
5.25
2
0.8
−6.5
20
0
70
Electrical Characteristics
over recommended operating free air temperature (unless otherwise noted)
Symbol
Parameter
Conditions
Typ
Min
(Note 2)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level
VCC = Min, IOH = Max
2.4
3.2
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
Output Voltage
VIH = Min, VIL = Max
II
Input Current @ Max Input Voltage
VCC = Max, VI = 5.5V
IIH
HIGH Level
VCC = Max
Select
Input Current
VI = 2.7V
Other
IIL
LOW Level
VCC = Max,
Select
Input Current
VI = 0.5V
Other
IOZH
Off-State Output Current with
VCC = Max, VO = 2.4V
HIGH Level Output Voltage Applied
VIH = Min, VIL = Max
IOZL
Off-State Output Current with
VCC = Max, VO = 0.5V
LOW Level Output Voltage Applied
VIH = Min, VIL = Max
IOS
Short Circuit Output Current
VCC = Max (Note 3)
−40
ICCH
Supply Current with Outputs HIGH
VCC = Max (Note 4)
44
ICCL
Supply Current with Outputs LOW
VCC = Max (Note 4)
60
ICCZ
Supply Current with Outputs Disabled VCC = Max (Note 4)
64
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.
Max
−1.2
0.5
1
100
50
−4
−2
50
−50
−100
68
93
99
Units
V
V
V
mA
mA
°C
Units
V
V
V
mA
µA
mA
µA
µA
mA
mA
mA
mA
3
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