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FSA3157B Datasheet, PDF (5/10 Pages) Fairchild Semiconductor – Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
AC Electrical Characteristics
Symbol
Parameter
Conditions
VCC (V)
TA=+25°C
Min. Typ. Max.
TA=-40 to
+85°C
Min. Max.
Units
Figure
tPLH, tPLH
Propagation Delay
Bus-to-bus(8)
VI=OPEN
1.65 to
1.95
2.3 to 2.7
3.0 to 3.6
3.5
3.5
1.2
1.2
ns
Figure 10
Figure 11
0.8
0.8
4.5 to 5.5
0.3
0.3
Output Enable
VI=2x VCC for
1.65 to
1.95
7.0
tPZL, tPZH Time Turn on Time tPZL VI=0V for 2.3 to 2.7 3.5
(A to Bn)
tPZH
3.0 to 3.6 2.5
23.0
13.0
6.9
24.0
14.0
ns
Figure 10
Figure 11
7.6
4.5 to 5.5 1.7
5.2
5.7
Output Disable
VI=2x VCC for
1.65 to
1.95
3.0
tPLZ, tPHZ Time Turn off Time tPLZ VI=0V for 2.3 to 2.7 2.0
(A Port to B Port) tPHZ1.
3.0 to 3.6 1.5
12.5
7.0
5.0
13.0
7.5
ns
Figure 10
Figure 11
5.3
4.5 to 5.5 0.8
3.5
3.8
tBBM
Break-before-Make
Time(9)
1.65 to
1.95
0.5
2.3 to 2.7 0.5
3.0 to 3.6 0.5
0.5
0.5
ns Figure 12
0.5
4.5 to 5.5 0.5
0.5
CL=0.1nF,
Q
Charge Injection(9) VGEN=0V
5.0
7.0
RGEN=0Ω
3.3
3.0
pC Figure 13
OIRR Off Isolation(10)
RL=50Ω,
f=10MHz
1.65 to 5.5
-57.0
dB Figure 14
Xtalk Crosstalk
RL=50Ω,
f=10MHz
1.65 to 5.5
-54.0
Figure 15
BW
THD
-3dB Bandwidth
Total Harmonic
Distortion(9)
RL=50Ω
RL=600Ω,
0.5VPP,
f=600Hz to
20KHz
1.65 to 5.5
5.000
250
.011
dB Figure 18
%
Notes:
8. This parameter is guaranteed by design but not tested. The bus switch contributes no propagation delay other
than the RC delay of the on resistance of the switch and the 50pF load capacitance, when driven by an ideal
voltage source (zero output impedance).
9. Guaranteed by design.
10. Off Isolation = 20 log10 [VA / VBn].
Capacitance
TA = +25°C, f=1MHz. Capacitance is characterized, but not tested in production.
Symbol
CIN
CIO-B
CIOA-ON
Parameter
Control Pin Input Capacitance
B Port Off Capacitance
A Port Capacitance when Switch is Enabled
Conditions
VCC=0V
VCC=5.0V
VCC=5.0V
Typ.
2.3
6.5
18.5
Max.
Units
pF
pF
pF
Figure
Figure 16
Figure 17
© 2007 Fairchild Semiconductor Corporation
FSA3157B Rev. 1.0.2
5
www.fairchildsemi.com