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74LCX74 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. 74LCX74
Description  Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop with 5V Tolerant Inputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74LCX74 Datasheet(HTML) 4 Page - Fairchild Semiconductor

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4
AC Electrical Characteristics
Note 6: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).
Dynamic Switching Characteristics
Capacitance
Symbol
Parameter
TA 40qC to 85qC, RL 500:
Units
VCC 3.3V r 0.3V
VCC 2.7V
VCC 2.5V r 0.2V
CL 50 pF
CL 50 pF
CL 30 pF
Min
Max
Min
Max
Min
Max
fMAX
Maximum Clock Frequency
150
150
150
MHz
tPHL
Propagation Delay
1.5
7.0
1.5
8.0
1.5
8.4
ns
tPLH
CPn to Qn or Qn
1.57.0
1.58.0
1.58.4
tPHL
Propagation Delay
1.5
7.0
1.5
8.0
1.5
8.4
ns
tPLH
CDn or SDn to Qn or Qn
1.57.0
1.58.0
1.58.4
tS
Setup Time
2.5
2.5
4.0
ns
tH
Hold Time
1.5
1.5
2.0
ns
tW
Pulse Width CP
3.3
3.3
4.0
ns
tW
Pulse Width and CD, SD
3.3
3.6
4.0
ns
tREC
Recovery Time
2.5
3.0
4.5
ns
tOSHL
Output to Output Skew
1.0
ns
tOSLH
(Note 6)
1.0
Symbol
Parameter
Conditions
VCC
(V)
TA 25qC
Unit
Typical
VOLP
Quiet Output Dynamic Peak VOL
CL 50 pF, VIH 3.3V, VIL 0V
3.3
0.8
V
CL 30 pF, VIH 2.5V, VIL 0V
2.5
0.6
VOLV
Quiet Output Dynamic Peak VOL
CL 50 pF, VIH 3.3V, VIL 0V
3.3
0.8
V
CL 30 pF, VIH 2.5V, VIL 0V
2.5
0.6
Symbol
Parameter
Conditions
Typical
Units
CIN
Input Capacitance
VCC Open, VI 0V or VCC
7pF
COUT
Output Capacitance
VCC 3.3V, VI 0V or VCC
8pF
CPD
Power Dissipation Capacitance
VCC 3.3V, VI 0V or VCC, f 10 MHz
25
pF


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