FST16213 Datasheet, PDF (4/6 Pages) Fairchild Semiconductor – 24-Bit Bus Exchange Switch

AC Electrical Characteristics
T_A = −40 °C to +85 °C,
Symbol
Parameter
C_L = 50pF, RU = RD = 500Ω
V_CC = 4.5 − 5.5V
V_CC = 4.0V
Units
Conditions Figure No.
Min
Max
Min
Max
t_PHL,t_PLH
Prop Delay Bus to Bus (Note 6)
0.25
0.25
ns V_I = OPEN
Figure 1
Figure 2
t_PHL,t_PLH
Prop Delay A1 to A2
0.5
0.5
ns V_I = OPEN
Figure 1
Figure 2
t_PZH, t_PZL
Output Enable Time, S to A or B
1.5
7.5
8.0
ns V_I = 7V for t_PZL
Figure 1
V_I = OPEN for t_PZH ^{Figure 2}
t_PHZ, t_PLZ
Output Disable Time S to A or B
1.0
8.5
9.0
ns V_I = 7V for t_PLZ
Figure 1
V_I = OPEN for t_PHZ ^{Figure 2}
t_PZH, t_PZL
Output Enable Time, S0 to A2 and B2 1.5
9.5
10.0
ns
V_I = 7V for t_PZL
Figure 1
V_I = OPEN for t_PZH ^{Figure 2}
t_PHZ, t_PLZ
Output Disable Time, S0 to A2 and B2 1.5
9.0
10.0
ns
V_I = 7V for t_PLZ
Figure 1
V_I = OPEN for t_PHZ ^{Figure 2}
Note 6: 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 7)
Symbol
Parameter
Typ
C_IN
Control pin Input Capacitance
3
C_I/O
Input/Output Capacitance
10
Note 7: T_A = +25°C, f = 1 MHz, Capacitance is characterized but not tested.
Max
Units
pF
pF
Conditions
V_CC = 5.0V
V_CC = 5.0V
S0, S1, or S2 = GND
AC Loading and Waveforms
Note: Input driven by 50 Ω source terminated in 50 Ω
Note: C_L includes load and stray capacitance
Note: Input PRR = 1.0 MHz, t_W = 500 ns
FIGURE 1. AC Test Circuit
www.fairchildsemi.com
FIGURE 2. AC Waveforms
4