FSTU3384 Просмотр технического описания (PDF) - Fairchild Semiconductor
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FSTU3384 Datasheet PDF : 5 Pages
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AC Electrical Characteristics
Symbol
Parameter
TA = −40°C to +85°C
CL = 50 pF, RU = RD = 500Ω
VCC = 4.5 − 5.5V
VCC = 4.0V
Units
Conditions
Figure
No.
Min
Max
Min
Max
tPHL, tPLH Prop Delay Bus to Bus (Note 6)
0.25
0.25
ns
VI = OPEN
Figures
1, 2
tPZH, tPZL
Output Enable Time
OE1, OE2 to An, Bn
1.0
5.7
6.2
ns
VI = 7V for tPZL
VI = OPEN for tPZH
Figures
1, 2
tPHZ, tPLZ
Output Disable Time
OE1, OE2 to An, Bn
1.5
5.2
5.5
ns
VI = 7V for tPLZ
VI = OPEN for tPHZ
Figures
1, 2
Note 6: This parameter is guaranteed by design but 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 the source (zero output impedance).
Capacitance (Note 7)
Symbol
Parameter
Typ
CIN
Control Input Capacitance
3
CI/O (OFF) Input/Output Capacitance
5
Note 7: Capacitance is characterized but not tested.
AC Loading and Waveforms
Max
Units
pF
pF
Conditions
VCC = 5.0V
VCC, OE = 5.0V
Note: Input driven by 50 Ω source terminated in 50 Ω, RU = RD = 500 Ω
Note: CL includes load and stray capacitance, CL= 50 pF
Note: Input PRR = 1.0 MHz, tW = 500 ns
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
3
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