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MC74HCT273A
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MC74HCT273A Datasheet PDF : 7 Pages
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MC74HCT273A
AC ELECTRICAL CHARACTERISTICS (VCC = 5.0 V ± 10%, CL = 50 pF, Input tr = tf = 6.0 ns)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Guaranteed Limit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Symbol
Parameter
– 55 to
Fig.
25_C v 85_C v 125_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ fmax
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPLH,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPHL
Maximum Clock Frequency (50% Duty Cycle)
Maximum Propagation Delay, Clock to Q
2, 5
30
24
20
2, 5
25
28
35
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPHL
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tTLH,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tTHL
Maximum Propagation Delay, Reset to Q
Maximum Output Transition Time, Any Output
25
28
35
2, 5
18
20
22
Unit
MHz
ns
ns
ns
Typical @ 25°C, VCC = 5.0 V
CPD
Power Dissipation Capacitance (Per Gate)*
30
pF
* Used to determine the no−load dynamic power consumption: PD = CPD VCC2f + ICC VCC.
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TIMING REQUIREMENTS (VCC = 5.0 V ± 10%, CL = 50 pF, Input tr = tf = 6.0 ns)
Guaranteed Limit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ – 55 to 25_C
v 85_C
v 125_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Symbol
Parameter
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tsu Minimum Setup Time, Data to Clock
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ th
Minimum Hold Time, Clock to Data
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ trec Minimum Recovery Time, Set or Reset Inactive to Clock
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tw
Minimum Pulse Width, Clock
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tw
Minimum Pulse Width, Set or Reset
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tr,tf MaximumInputRiseandFallTimes
Fig. Min Max Min Max Min Max Unit
10
12
15
ns
3.0
3.0
3.0
ns
5.0
5.0
5.0
ns
2
12
15
18
ns
12
15
18
ns
2
500
500
500 ns
SWITCHING WAVEFORMS
tr
CLOCK
Q
2.7 V
1.3 V
0.3 V
tw
1/fmax
tPLH
90%
1.3 V
10%
tTLH
tf
tPHL
tTHL
3.0 V
RESET
GND
Q
CLOCK
tw
1.3 V
tPHL
1.3 V
trec
1.3 V
3.0 V
GND
3.0 V
GND
Figure 2.
Figure 3.
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