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74LCX257 データシートの表示(PDF) - Fairchild Semiconductor

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74LCX257 Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs Fairchild
Fairchild Semiconductor Fairchild
74LCX257 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
DC Electrical Characteristics (Continued)
Symbol
Parameter
ICC
Quiescent Supply Current
ICC
Increase in ICC per Input
Note 5: Outputs disabled or 3-STATE only.
Conditions
VI = VCC or GND
3.6V VI, VO 5.5V (Note 5)
VIH = VCC 0.6V
VCC
(V)
2.3 3.6
2.3 3.6
2.3 3.6
TA = −40°C to +85°C
Min
Max
10
±10
500
Units
µA
µA
AC Electrical Characteristics
TA = −40°C to +85°C, RL = 500
Symbol
Parameter
VCC = 3.3V ± 0.3V
CL= 50 pF
VCC = 2.7V
CL = 50 pF
VCC = 2.5V ± 0.2V
CL= 30 pF
Units
Min
Max
Min
Max
Min
Max
tPHL
Propagation Delay
tPLH
SZn
1.5
7.0
1.5
8.5
1.5
9.1
ns
1.5
7.0
1.5
8.5
1.5
9.1
tPHL
Propagation Delay
tPLH
InZn
1.5
6.0
1.5
6.5
1.5
7.2
ns
1.5
6.0
1.5
6.5
1.5
7.2
tPZL
Output Enable Time
tPZH
OE Zn
1.5
7.0
1.5
8.5
1.5
9.1
ns
1.5
7.0
1.5
8.5
1.5
9.1
tPLZ
Output Disable Time
tPHZ
OE Zn
1.5
5.5
1.5
6.0
1.5
6.6
ns
1.5
5.5
1.5
6.0
1.5
6.6
tOSHL
Output to Output Skew (Note 6)
1.0
ns
tOSLH
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 Valley 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 = 25°C
Units
(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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