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DM74LS221SJ Arkusz danych(PDF) 4 Page - Fairchild Semiconductor

Numer części DM74LS221SJ
Szczegółowy opis  Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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Absolute Maximum Ratings(Note 3)
Note 3: 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
Note 4: TA = 25°C and VCC = 5V.
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
VT+
Positive-Going Input Threshold Voltage
12
V
at the A Input (VCC = Min)
VT−
Negative-Going Input Threshold Voltage
0.8
1
V
at the A Input (VCC = Min)
VT+
Positive-Going Input Threshold Voltage
12
V
at the B Input (VCC = Min)
VT−
Negative-Going Input Threshold Voltage
0.8
0.9
V
at the B Input (VCC = Min)
IOH
HIGH Level Output Current
−0.4
mA
IOL
LOW Level Output Current
8
mA
tW
Pulse Width
Data
40
ns
(Note 4)
Clear
40
tREL
Clear Release Time (Note 4)
15
ns
Rate of Rise or Fall of
1
Schmitt Input (B) (Note 4)
Rate of Rise or Fall of
1
Logic Input (A) (Note 4)
REXT
External Timing Resistor (Note 4)
1.4
100
k
CEXT
External Timing Capacitance (Note 4)
0
1000
µF
DC
Duty Cycle
RT = 2 kΩ
50
%
(Note 4)
RT = REXT (Max)
60
TA
Free Air Operating Temperature
0
70
°C


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