Data Sheet
NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
DC Electrical Characteristics
Notes:
3. Measured by the voltage drop between A and B pins at the indicated current through the switch. On resistance is
determined by the lower of the voltages on the two (A or B Ports).
4. Parameter is characterized, but not tested in production.
5. ΔR
ON
= R
ON
max – R
ON
minimum measured at identical V
CC
, temperature, and voltage levels.
6. Flatness is defined as the difference between the maximum and minimum value of on resistance over the specified
range of conditions.
7. Guaranteed by design.
Symbol Parameter Conditions V
CC
(V)
T
A
= +25°C
T
A
= –40°C to
+85°C
Units
Min. Typ. Max. Min. Max.
V
IH
High Level
Input Voltage
1.65 – 1.95 0.75 V
CC
0.75 V
CC
V
2.3 – 5.5 0.7 V
CC
0.7 V
CC
V
IL
Low Level
Input Voltage
1.65 – 1.95 0.25 V
CC
0.25 V
CC
V
2.3 – 5.5 0.3 V
CC
0.3 V
CC
I
IN
Input Leakage
Current
0 ≤ V
IN
≤ 5.5V 0 – 5.5 ±0.05 ±0.1 ±1 µA
I
OFF
Off State Leakage
Current
0 ≤ A, B ≤ V
CC
1.65 – 5.5 ±0.05 ±0.1 ±1 µA
R
ON
Switch On
Resistance
(3)
V
IN
= 0V, I
O
= 30mA 4.5 3.0 7.0 7.0
Ω
V
IN
= 2.4V, I
O
= –30mA 5.0 12.0 12.0
V
IN
= 4.5V, I
O
= –30mA 7.0 15.0 15.0
V
IN
= 0V, I
O
= 24mA 3.0 4.0 9.0 9.0
V
IN
= 3V, I
O
= –24mA 10.0 20.0 20.0
V
IN
= 0V, I
O
= 8mA 2.3 5.0 12.0 12.0
V
IN
= 2.3V, I
O
= –8mA 13.0 30.0 30.0
V
IN
= 0V, I
O
= 4mA 1.65 6.5 20.0 20.0
V
IN
= 1.65V, I
O
= –4mA 17.0 50.0 50.0
I
CC
Quiescent Supply
Current;
All Channels On or
Off
V
IN
= V
CC
or GND I
OUT
= 0 5.5 1 10 µA
Analog Signal
Range
V
CC
0V
CC
0V
CC
V
R
RANGE
On Resistance Over
Signal Range
(3, 7)
I
A
= –30mA, 0 ≤ V
Bn
≤ V
CC
4.5 25.0
Ω
I
A
= –24mA, 0 ≤ V
Bn
≤ V
CC
3.0 50.0
I
A
= –8mA, 0 ≤ V
Bn
≤ V
CC
2.3 100
I
A
= –4mA, 0 ≤ V
Bn
≤ V
CC
1.65 300
ΔR
ON
On Resistance
Match Between-
Channels
(3, 4, 5)
I
A
= –30mA, V
Bn
= 3.15 4.5 0.15
Ω
I
A
= –24mA, V
Bn
2.1 3.0 0.2
I
A
= –8mA, V
Bn
= 1.6
2.3
0.5
I
A
= –4mA, V
Bn
= 1.15 1.65 0.50
R
flat
On Resistance
Flatness
(3, 4, 6)
I
A
= –30mA, 0 ≤ V
Bn
≤ V
CC
5.0 6.0
Ω
I
A
= –24mA, 0 ≤ V
Bn
≤ V
CC
3.3 12.0
I
A
= –8mA, 0 ≤ V
Bn
≤ V
CC
2.5 28.0
I
A
= –4mA, 0 ≤ V
Bn
≤ V
CC
1.8 125
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