Data Sheet

NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
AC Electrical Characteristics
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 log
10
[V
A
/ V
Bn
].
Capacitance
T
A
= +25°C, f = 1MHz. Capacitance is characterized, but not tested in production.
Symbol Parameter Conditions
V
CC
(V)
T
A
= +25°C
T
A
= –40°C to
+85°C
Units
Figure
Number
Min. Typ. Max. Min. Max.
t
PHL
,
t
PLH
Propagation Delay
Bus-to-Bus
(8)
V
I
= OPEN
1.65 – 1.95 3.5 3.5
ns
Figure 12
Figure 13
2.3 – 2.7 1.2 1.2
3.0 – 3.6 0.8 0.8
4.5 – 5.5 0.3 0.3
t
PZL
,
t
PZH
Output Enable Time
Turn-On Time
(A to B
n
)
V
I
= 2 x V
CC
for t
PZL
V
I
= 0V for t
PZH
1.65 – 1.95 7.0 23.0 7.0 24.0
ns
Figure 12
Figure 13
2.3 – 2.7 3.5 13.0 3.5 14.0
3.0 – 3.6 2.5 6.9 2.5 7.6
4.5 – 5.5 1.7 5.2 1.7 5.7
t
PLZ
,
t
PHZ
Output Disable Time
Turn-Off Time
(A Port to B Port)
V
I
= 2 x V
CC
for t
PLZ
V
I
= 0V for t
PHZ
1.65 – 1.95 3.0 12.5 3.0 13.0
ns
Figure 12
Figure 13
2.3 – 2.7 2.0 7.0 2.0 7.5
3.0 – 3.6 1.5 5.0 1.5 5.3
4.5 – 5.5 0.8 3.5 0.8 3.8
t
B-M
Break-Before-Make
Time
(9)
1.65 –1.95 0.5 0.5
ns Figure 14
2.3 – 2.7 0.5 0.5
3.0 – 3.6 0.5 0.5
4.5 – 5.5 0.5 0.5
Q Charge Injection
(9)
C
L
= 0.1nF, V
GEN
= 0V, 5.0 7.0
pC Figure 15
R
GEN
= 0Ω 3.3 3.0
OIRR Off Isolation
(10)
R
L
= 50Ω, f = 10MHz 1.65 – 5.5 –57.0 dB Figure 16
Xtalk Crosstalk R
L
= 50Ω, f = 10MHz 1.65 – 5.5 –54.0 dB Figure 17
BW –3dB Bandwidth R
L
= 50Ω 1.65 – 5.5 250 MHz Figure 20
THD
Total Harmonic
Distortion
(9)
R
L
= 600Ω, 0.5 V
PP
,
f = 600 Hz to 20 KHz
5.0 .011 %
Symbol Parameter Conditions Typ. Max. Units
Figure
Number
C
IN
Control Pin Input Capacitance V
CC
= 0V 2.3 pF
C
IO-B
B Port Off Capacitance V
CC
= 5.0V 6.5 pF Figure 18
C
IOA-ON
A Port Capacitance When Switch Is Enabled V
CC
= 5.0V 18.5 pF Figure 19
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