Fairchild FSA3157P6X, NC7SB3157P6X, FSA3157L6X, NC7SB3157L6X Schematic [ru]
September 2008
NC7SB3157, FSA3157
Low-Voltage SPDT Analog Switch or 2:1Multiplexer /
De-multiplexer Bus Switch
NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
Features
■ Useful in Both Analog and Digital Applications
■ Space-Saving, SC70 6-Lead Surface Mount Package
■ Ultra-Small, MicroPak™ Leadless Package
■ Low On Resistance: <10Ω on Typical at 3.3V V
■ Broad V
■ Rail-to-Rail Signal Handling
■ Power-Down, High-Impedance Control Input
■ Over-Voltage Tolerance of Control Input to 7.0V
■ Break-Before-Make Enable Circuitry
■ 250MHz, 3dB Bandwidth
Operating Range: 1.65V to 5.5V
CC
CC
Description
The NC7SB3157 / FSA3157 is a high-performance, single-pole / double-throw (SPDT) analog switch or 2:1 multiplexer / de-multiplexer bus switch.
The device is fabricated with advanced sub-micron
CMOS technology to achieve high-speed enable and
disable times and low on resistance. The break-beforemake select circuitry prevents disruption of signals on
the B Port due to both switches temporarily being
enabled during select pin switching. The device is specified to operate over the 1.65 to 5.5V V
range. The control input tolerates voltages up to 5.5V,
independent of the VCC operating range.
Ordering Information
Top
Part Number
NC7SB3157P6X B7A RoHS 6-Lead, SC70, EIAJ SC88, 1.25mm Wide Package
NC7SB3157L6X BB RoHS 6-Lead, MicroPak 1.0mm Wide Package
FSA3157P6X B7A RoHS 6-Lead, SC70, EIAJ SC88, 1.25mm Wide Package
FSA3157L6X BB RoHS 6-Lead, MicroPak 1.0mm Wide Package
Mark Eco Status Package Description
operating
CC
Packing
Method
3000 Units on
Tape and Reel
5000 Units on
Tape and Reel
3000 Units on
Tape and Reel
5000 Units on
Tape and Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
NC7SB3157, FSA3157 Rev. 1.0.3
NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
Logic Symbol
B
1
S
B
0
Figure 1. Logic Symbol
Analog Symbol
B
1
GND
B
0
Connection Diagrams
A
2. Pin Assignments SC70
S
V
CC
A
Figure 3. Analog Symbol
Function Table
Input (S) Function
Logic Level Low B0 Connected to A
Logic Level High B
Connected to A
1
Pin Descriptions
Pin Names Description
A, B0, B
1
S Control Input
Data Ports
Figure 4. Pin One Orientation
Note:
Orientation of top mark determines pin one location.
Read the top product code mark left to right and pin one
is the lower left pin (see Figure 4).
1
B
1
2
GND
34
B
0
S
6
5
V
CC
A
Figure 5. Pad Assignments for MicroPak™
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
NC7SB3157, FSA3157 Rev. 1.0.3 2
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only.
Symbol Parameter Min. Max. Unit
V
CC
V
S
V
IN
I
IK
I
OUT
I
CC/IGND
T
STG
T
J
T
L
P
D
ESD Human Body Model, JESD22-A114 4000 V
Note:
1. The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are
observed.
Supply Voltage –0.5 +7.0 V
DC Switch Voltage
DC Input Voltage
(1)
(1)
DC Input Diode Current at VIN < 0V –50 mA
DC Output Current 128 mA
DC VCC or Ground Current ±100 mA
Storage Temperature Range –65 +150 °C
Junction Temperature Under Bias +150 °C
Junction Lead Temperature (Soldering, 10 seconds) +260 °C
Power Dissipation at +85°C 180 mW
–0.5 VCC +0.5 V
–0.5 +7.0 V
NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol Parameter Min. Max. Unit
V
CC
V
IN
V
IN
V
OUT
T
A
tr, t
θ
JA
Note:
2. Control input must be held HIGH or LOW; it must not float.
Supply Voltage Operating 1.65 5.50 V
(2)
(2)
(2)
0 V
0 V
0 V
CC
CC
CC
Control Input Voltage
Switch Input Voltage
Output Voltage
Operating Temperature –40 +85 °C
Input Rise and Fall Time
f
Control Input
= 2.3V–3.6V
V
CC
Control Input
= 4.5V–5.5V
V
CC
0 10 ns/V
0 5 ns/V
Thermal Resistance, SC70 270 °C/W
V
V
V
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
NC7SB3157, FSA3157 Rev. 1.0.3 3
DC Electrical Characteristics
= –40°C to
T
= +25°C
T
Symbol Parameter Conditions V
CC
(V)
A
Min. Typ. Max. Min. Max.
V
V
I
OFF
R
I
R
RANGE
ΔR
R
High Level
IH
Input Voltage
Low Level
IL
Input Voltage
Input Leakage
I
IN
Current
Off State Leakage
Current
Switch On
ON
Resistance
Quiescent Supply
Current;
CC
All Channels On or
Off
Analog Signal
Range
On Resistance Over
Signal Range
On Resistance
Match Between-
ON
Channels
On Resistance
flat
Flatness
(3)
(3, 4, 5)
(3, 4, 6)
0 ≤ V
≤ 5.5V 0 – 5.5 ±0.05 ±0.1 ±1 µA
IN
0 ≤ A, B ≤ V
CC
VIN = 0V, IO = 30mA 4.5 3.0 7.0 7.0
V
= 2.4V, IO = –30mA 5.0 12.0 12.0
IN
= 4.5V, IO = –30mA 7.0 15.0 15.0
V
IN
= 0V, IO = 24mA 3.0 4.0 9.0 9.0
V
IN
= 3V, IO = –24mA 10.0 20.0 20.0
V
IN
= 0V, IO = 8mA 2.3 5.0 12.0 12.0
V
IN
= 2.3V, IO = –8mA 13.0 30.0 30.0
V
IN
= 0V, IO = 4mA 1.65 6.5 20.0 20.0
V
IN
= 1.65V, IO = –4mA 17.0 50.0 50.0
V
IN
V
= VCC or GND I
IN
OUT
IA = –30mA, 0 ≤ VBn ≤ V
(3, 7)
= –8mA, 0 ≤ VBn ≤ V
I
A
= –4mA, 0 ≤ VBn ≤ V
I
A
= –24mA, 0 ≤ VBn ≤ V
I
A
IA = –30mA, VBn = 3.15 4.5 0.15
= –24mA, VBn 2.1 3.0 0.2
I
A
I
= –8mA, VBn = 1.6
A
= –4mA, VBn = 1.15 1.65 0.50
I
A
IA = –30mA, 0 ≤ V
= –24mA, 0 ≤ V
I
A
= –8mA, 0 ≤ V
I
A
I
= –4mA, 0 ≤ V
A
Bn
Bn
Bn
Bn
≤ V
≤ V
1.65 – 1.95 0.75 V
2.3 – 5.5 0.7 V
1.65 – 1.95 0.25 V
2.3 – 5.5 0.3 V
CC
CC
CC
CC
1.65 – 5.5 ±0.05 ±0.1 ±1 µA
= 0 5.5 1 10 µA
≤ V
≤ V
CC
CC
CC
CC
V
CC
4.5 25.0
CC
3.0 50.0
CC
2.3 100
1.65 300
2.3
5.0 6.0
CC
3.3 12.0
CC
2.5 28.0
1.8 125
0VCC0VCCV
0.5
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
= RON max – RON minimum measured at identical VCC, temperature, and voltage levels.
ON
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.
A
0.75 V
0.7 V
+85°C
CC
CC
0.25 V
0.3 V
CC
CC
Units
V
V
Ω
Ω
Ω
Ω
NC7SB3157, FSA3157 — Low-Voltage SPDT Analog Switch or 2:1 Multiplexer / De-multiplexer Bus Switch
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
NC7SB3157, FSA3157 Rev. 1.0.2 4
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