FST34170 查看數據表（PDF） - Fairchild Semiconductor
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FST34170 Datasheet PDF : 5 Pages
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AC Electrical Characteristics
Symbol
Parameter
TA 40 qC to 85 qC,
CL 50 pF, RU RD 500:
VCC 4.5 5.5V
VCC 4.0V
Units
Conditions
Figure No.
Min
Max
Min
Max
tPHL, tPLH
tPZH
A or B, to B or A (Note 9)
Output Enable Time,
SEL to A, B
0.25
7.0
30.0
0.25
35.0
ns VI OPEN
ns
VI OPEN for tPZH
Figures 1, 2
Figures 1, 2
tPZL
Output Enable Time,
SEL to A, B
7.0
30.0
35.0
ns
VI 7V for tPZL
Figures 1, 2
tPHZ
Output Disable Time,
SEL to A, B
1.0
6.9
7.3
ns
VI OPEN for tPHZ
Figures 1, 2
tPLZ
Output Disable Time,
SEL to A, B
1.0
7.7
7.7
ns
VI 7V for tPLZ
Figures 1, 2
Note 9: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On
resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance).
Capacitance (Note 10)
Symbol
Parameter
Typ
CIN
CI/O OFF
Note 10: TA
Control Pin Input Capacitance
4
Input/Output Capacitance “OFF State”
8
q25 C, f 1 MHz, Capacitance is characterized but not tested.
Max
Units
pF
pF
Conditions
VCC 5.0V
VCC 5.0V, Switch OFF
AC Loading and Waveforms
: : Note: Input driven by 50 source terminated in 50
Note: CL includes load and stray capacitance, CL 50 pF
Note: Input PRR 1.0 MHz, tW 500 ns
FIGURE 1. AC Test Circuit
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FIGURE 2. AC Waveforms
4
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