NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
AC Electrical Characteristics
Symbol
Parameter
Conditions
V
CC
(V)
1.65 – 1.95
t
PHL
,
t
PLH
Propagation Delay
Bus-to-Bus
(8)
V
I
= OPEN
2.3 – 2.7
3.0 – 3.6
4.5 – 5.5
1.65 – 1.95
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
2.3 – 2.7
3.0 – 3.6
4.5 – 5.5
1.65 – 1.95
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
2.3 – 2.7
3.0 – 3.6
4.5 – 5.5
1.65 –1.95
t
B-M
Break-Before-Make
Time
(9)
2.3 – 2.7
3.0 – 3.6
4.5 – 5.5
Q
OIRR
Xtalk
BW
THD
Charge Injection
(9)
Off Isolation
(10)
Crosstalk
–3dB Bandwidth
Total Harmonic
Distortion
(9)
C
L
= 0.1nF, V
GEN
= 0V,
R
GEN
=
0Ω
R
L
= 50Ω, f = 10MHz
R
L
= 50Ω, f = 10MHz
R
L
= 50Ω
R
L
= 600Ω, 0.5 V
PP
,
f = 600 Hz to 20 KHz
5.0
3.3
1.65 – 5.5
1.65 – 5.5
1.65 – 5.5
5.0
7.0
3.5
2.5
1.7
3.0
2.0
1.5
0.8
0.5
0.5
0.5
0.5
7.0
3.0
–57.0
–54.0
250
.011
T
A
= –40°C to
Figure
+85°C
Units
Number
Min. Typ. Max. Min. Max.
T
A
= +25°C
3.5
1.2
0.8
0.3
23.0
13.0
6.9
5.2
12.5
7.0
5.0
3.5
7.0
3.5
2.5
1.7
3.0
2.0
1.5
0.8
0.5
0.5
0.5
0.5
pC
dB
dB
Figure 15
Figure 16
Figure 17
ns
Figure 14
3.5
1.2
0.8
0.3
24.0
14.0
7.6
5.7
13.0
7.5
5.3
3.8
ns
Figure 12
Figure 13
ns
Figure 12
Figure 13
ns
Figure 12
Figure 13
MHz Figure 20
%
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
C
IN
C
IO-B
C
IOA-ON
Parameter
Control Pin Input Capacitance
B Port Off Capacitance
A Port Capacitance When Switch Is Enabled
Conditions
V
CC
= 0V
V
CC
= 5.0V
V
CC
= 5.0V
Typ.
2.3
6.5
18.5
Max.
Units
pF
pF
pF
Figure
Number
Figure 18
Figure 19
© 2006 Fairchild Semiconductor Corporation
NC7SB3157, FSA3157 Rev. 1.0.2
5
www.fairchildsemi.com
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
