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74LCX74 Datasheet, PDF (4/11 Pages) Fairchild Semiconductor – Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop with 5V Tolerant Inputs
AC Electrical Characteristics
Symbol
Parameter
TA
VCC 3.3V r 0.3V
CL 50 pF
40qC to 85qC, RL
VCC 2.7V
CL 50 pF
500:
VCC 2.5V r 0.2V
CL 30 pF
Units
Min
Max
Min
Max
Min
Max
fMAX
tPHL
tPLH
tPHL
tPLH
tS
tH
tW
Maximum Clock Frequency
Propagation Delay
CPn to Qn or Qn
Propagation Delay
CDn or SDn to Qn or Qn
Setup Time
Hold Time
Pulse Width CP
150
150
150
MHz
1.5
7.0
1.5
8.0
1.5
8.4
ns
1.5
7.0
1.5
8.0
1.5
8.4
1.5
7.0
1.5
8.0
1.5
8.4
ns
1.5
7.0
1.5
8.0
1.5
8.4
2.5
2.5
4.0
ns
1.5
1.5
2.0
ns
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
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
Symbol
Parameter
VOLP
Quiet Output Dynamic Peak VOL
VOLV
Quiet Output Dynamic Peak VOL
Capacitance
Conditions
CL 50 pF, VIH 3.3V, VIL 0V
CL 30 pF, VIH 2.5V, VIL 0V
CL 50 pF, VIH 3.3V, VIL 0V
CL 30 pF, VIH 2.5V, VIL 0V
VCC
TA 25qC
Unit
(V)
Typical
3.3
0.8
V
2.5
0.6
3.3
0.8
V
2.5
0.6
Symbol
CIN
COUT
CPD
Parameter
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Conditions
VCC Open, VI 0V or VCC
VCC 3.3V, VI 0V or VCC
VCC 3.3V, VI 0V or VCC, f 10 MHz
Typical
7
8
25
Units
pF
pF
pF
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