DM74LS14SJ Ver la hoja de datos (PDF) - Fairchild Semiconductor
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DM74LS14SJ Datasheet PDF : 5 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
Parameter
VCC
VT+
VT−
HYS
Supply Voltage
Positive-Going Input Threshold Voltage (Note 2)
Negative-Going Input Threshold Voltage (Note 2)
Input Hysteresis (Note 2)
IOH
HIGH Level Output Current
IOL
LOW Level Output Current
TA
Free Air Operating Temperature
Note 2: VCC = 5V.
Min
4.75
1.4
0.5
0.4
0
Nom
5
1.6
0.8
0.8
Max
5.25
1.9
1
−0.4
8
70
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level
Output Voltage
VCC = Min, IOH = Max
2.7
VIL = Max
VOL
LOW Level
VCC = Min, IOL = Max
Output Voltage
VIH = Min
VCC = Min, IOL = 4 mA
IT+
Input Current at
VCC = 5V, VI = VT+
Positive-Going Threshold
IT−
Input Current at
Negative-Going Threshold
VCC = 5V, VI = VT−
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
IOS
Short Circuit Output Current
VCC = Max (Note 4)
−20
ICCH
Supply Current with Outputs HIGH
VCC = Max
ICCL
Supply Current with Outputs LOW
VCC = Max
Note 3: All typicals are at VCC = 5V, TA = 25°C.
Note 4: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Typ
(Note 3)
3.4
0.35
0.25
−0.14
−0.18
8.6
12
Max
−1.5
0.5
0.4
0.1
20
−0.4
−100
16
21
Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol
Parameter
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
RL = 2 kΩ
CL = 15 pF
CL = 50 pF
Min
Max
Min
Max
5
22
8
25
5
22
10
33
Units
V
V
V
V
mA
mA
°C
Units
V
V
V
mA
mA
mA
µA
mA
mA
mA
mA
Units
ns
ns
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