DM74LS503N View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
DM74LS503N Datasheet PDF : 4 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
tS (H)
tS (L)
tH (H)
tH (L)
tS (H)
tS (L)
tH (H)
tH (L)
tW (H)
tW (L)
Parameter
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
LOW Level Output Current
Free Air Operating Temperature
Setup Time HIGH or LOW
S to CP
Hold Time HIGH or LOW
S to CP
Setup Time HIGH or LOW
D to CP
Hold Time HIGH or LOW
D to CP
CP Pulse Width HIGH or LOW
Min
Nom
Max
Units
4.75
5
5.25
V
2
V
0.8
V
−0.4
mA
8
mA
0
70
°C
16
ns
16
0
ns
0
8
ns
8
10
ns
10
46
ns
46
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, VIH = Min
Output Voltage
IOL = 4 mA, VCC = Min
II
Input Current @ Max
VCC = Max, VI = 7V
Input Voltage
VI = 10V
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 3)
−20
ICC
Supply Current
VCC = Max
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.
Typ
Max
(Note 2)
−1.5
0.5
0.4
0.1
20
−0.8
−100
65
Units
V
V
V
mA
µA
mA
mA
mA
Switching Characteristics
VCC = +5.0V, TA = +25°C
Symbol
Parameter
fMAX
tPLH
tPHL
tPLH
tPHL
Maximum Count Frequency
Propagation Delay
CP to Qn or CC
Propagation Delay
E to Q7
RL = 2 kΩ, CL = 15 pF
Min
Max
15
35
25
20
24
Units
MHz
ns
ns
3
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