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DM74LS273 Arkusz danych(PDF) 3 Page - Fairchild Semiconductor

Numer części DM74LS273
Szczegółowy opis  8-Bit Register with Clear
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS273 Arkusz danych(HTML) 3 Page - Fairchild Semiconductor

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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
Electrical Characteristics
Over recommended operating free air temperature range (unless otherwise noted)
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.
Switching Characteristics
VCC = +5.0V, TA =+25°C
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
−0.4
mA
IOL
LOW Level Output Current
8
mA
TA
Free Air Operating Temperature
0
70
°C
tS(H)
Setup Time HIGH or LOW
15
ns
tS(L)
Dn to CP
15
tH(H)
Hold Time HIGH or LOW
5
ns
tH(L)
Dn to CP
5
tW(H)
CP Pulse Width HIGH or LOW
20
ns
tW(L)
20
tW(L)
MR Pulse Width LOW
20
ns
tREC
Recovery Time
15
ns
MR to CP
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 2)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max,
2.7
3.4
V
Output Voltage
VIL = Max
VOL
LOW Level
VCC = Min, IOL = Max,
0.35
0.5
Output Voltage
VIH = Min
V
IOL = 4 mA, VCC = Min
0.25
0.4
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
−0.4
mA
IOS
Short Circuit Output Current
VCC = Max (Note 3)
−20
−100
mA
ICC
Supply Current
VCC = Max
27
mA
Symbol
Parameter
CL = 15 pF
Units
RL = 2 kΩ
Min
Max
fMAX
Maximum Clock Frequency
30
MHz
tPLH
Propagation Delay
24
ns
tPHL
CP to Qn
24
tPLH
Propagation Delay
27
ns
MR to Qn


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