FST16244 Ver la hoja de datos (PDF) - Fairchild Semiconductor
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FST16244 Datasheet PDF : 4 Pages
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Preliminary
AC Electrical Characteristics
TA = −40 °C to +85 °C,
Symbol
Parameter
CL = 50pF, RU = RD = 500Ω
VCC = 4.5 – 5.5V
VCC = 4.0V
Units
Conditions
Figure
Number
Min
Max
Min
Max
tPHL, tPLH Propagation Delay Bus-to-Bus
(Note 7)
0.25
0.25
ns
VI = OPEN
Figures
1, 2
tPZH, tPZL Output Enable Time
1.0
5.1
5.5
ns
VI = 7V for tPZL
Figures
VI = OPEN for tPZH
1, 2
tPHZ, tPLZ Output Disable Time
1.0
5.4
5.2
ns
VI = 7V for tPLZ
Figures
VI = OPEN for tPHZ
1, 2
Note 7: 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 8)
Symbol
Parameter
Typ
CIN
Control Pin Input Capacitance
3
CI/O
Input/Output Capacitance “OFF State”
6
Note 8: TA = +25°C, f = 1 MHz, Capacitance is characterized but not tested.
Max
Units
pF
pF
Conditions
VCC = 5.0V, VIN = 0V
VCC, OE = 5.0V, VIN = 0V
AC Loading and Waveforms
Note: Input driven by 50Ω source terminated in 50Ω
Note: CL includes load and stray capacitance
Note: Input PRR = 1.0 MHz, tW = 500 ns
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
3
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