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74LCX02 View Datasheet(PDF) - STMicroelectronics

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74LCX02 Datasheet PDF : 15 Pages
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74LCX02
Test circuit
Table 7. AC electrical characteristics
Test condition
Symbol
Parameter
VCC
CL
RL
(V)
(pF)
()
tPLH tPHL
Propagation delay
time
2.7
3.0 to 3.6
50
500
tOSLH
tOSHL
Output to output
skew time (1) (2)
3.0 to 3.6
50
500
ts = tr
(ns)
2.5
2.5
Value
-40 to 85 °C Unit
Min Max
4.4
ns
1.0 5.4
1.0 ns
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|,
tOSHL = | tPHLm - tPHLn|)
2. Parameter guaranteed by design
Table 8. Capacitive characteristics
Test condition
Symbol
Parameter
VCC
(V)
CIN Input capacitance
CPD
Power dissipation
capacitance (1)
3.3
VIN = 0 to VCC
3.3
fIN = 10MHz
VIN = 0 or VCC
Value
TA = 25 °C
Unit
Min Typ Max
6
pF
43
pF
1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the
operating current consumption without load. (Refer to Test Circuit). Average operating current can be
obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per gate)
5
Test circuit
Figure 4. Test circuit
CL = 50pF or equivalent (includes jig and probe capacitance)
RL = 500or equivalent
RT = ZOUT of pulse generator (typically 50)
7/15
 

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