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74LCX02TTR 数据表(PDF) 7 Page - STMicroelectronics

部件名 74LCX02TTR
功能描述  Low voltage CMOS QUAD 2-Input NOR gate with 5V tolerant inputs
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74LCX02TTR 数据表(HTML) 7 Page - STMicroelectronics

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74LCX02
Test circuit
7/15
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)
Table 7. AC electrical characteristics
Symbol
Parameter
Test condition
Value
Unit
VCC
(V)
CL
(pF)
RL
(
Ω)
ts = tr
(ns)
-40 to 85 °C
Min
Max
tPLH tPHL
Propagation delay
time
2.7
50
500
2.5
4.4
ns
3.0 to 3.6
1.0
5.4
tOSLH
tOSHL
Output to output
skew time (1) (2)
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
3.0 to 3.6
50
500
2.5
1.0
ns
Table 8. Capacitive characteristics
Symbol
Parameter
Test condition
Value
Unit
VCC
(V)
TA = 25 °C
Min
Typ
Max
CIN
Input capacitance
3.3
VIN = 0 to VCC
6pF
CPD
Power dissipation
capacitance (1)
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)
3.3
fIN = 10MHz
VIN = 0 or VCC
43
pF


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