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74LCX257 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. 74LCX257
Description  Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74LCX257 Datasheet(HTML) 4 Page - Fairchild Semiconductor

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4
DC Electrical Characteristics (Continued)
Note 5: Outputs disabled or 3-STATE only.
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
Conditions
VCC
TA = −40°C to +85°C
Units
(V)
Min
Max
ICC
Quiescent Supply Current
VI = VCC or GND
2.3
− 3.6
10
µA
3.6V
≤ V
I, VO ≤ 5.5V (Note 5)
2.3
− 3.6
±10
∆I
CC
Increase in ICC per Input
VIH = VCC −0.6V
2.3
− 3.6
500
µA
Symbol
Parameter
TA = −40°C to +85°C, RL = 500 Ω
Units
VCC = 3.3V ± 0.3V
VCC = 2.7V
VCC = 2.5V ± 0.2V
CL= 50 pF
CL = 50 pF
CL= 30 pF
Min
Max
Min
Max
Min
Max
tPHL
Propagation Delay
1.5
7.0
1.5
8.5
1.5
9.1
ns
tPLH
S
→Z
n
1.57.0
1.58.5
1.59.1
tPHL
Propagation Delay
1.5
6.0
1.5
6.5
1.5
7.2
ns
tPLH
In→Zn
1.56.0
1.56.5
1.57.2
tPZL
Output Enable Time
1.5
7.0
1.5
8.5
1.5
9.1
ns
tPZH
OE
→Z
n
1.57.0
1.58.5
1.59.1
tPLZ
Output Disable Time
1.5
5.5
1.5
6.0
1.5
6.6
ns
tPHZ
OE
→Z
n
1.55.5
1.56.0
1.56.6
tOSHL
Output to Output Skew (Note 6)
1.0
ns
tOSLH
1.0
Symbol
Parameter
Conditions
VCC
TA = 25°C
Units
(V)
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 Valley 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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