PI5A3157B
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Low Voltage SPDT Analog Switch 2:1 Mux/Demux Bus Switch
Features
•
•
•
•
•
•
•
•
•
•
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•
Description
The PI5A3157B is a high-bandwidth, fast single-pole
double-throw (SPDT) CMOS switch. It can be used as
an analog switch or as a low-delay bus switch. Specified
over a wide operating power supply voltage range,
1.65V to 5.5V, the PI5A3157B has a maximum ON
resistance of 12-ohms at 1.65V, 9-ohms at 2.3V & 6-
ohms at 4.5V.
Break-before-make switching prevents both switches
being enabled simultaneously. This eliminates signal
disruption during switching.
The control input, S, is independent of supply voltage.
PI5A3157B is an improved direct replacement for the
NC7SB3157.
CMOS Technology for Bus and Analog
Applications
Low On-Resistance: 8Ω at 3.0V
Wide V
CC
Range: 1.65V to 5.5V
Rail-to-Rail Signal Range
Control Input Overvoltage Tolerance: 5.5V(Min)
Fast Transition Speed: 2ns at 5.0V
High Off Isolation: -63dB @ 10MHz
Break-Before-Make Switching
High Bandwidth: 350MHz
Extended Industrial Temperature Range:
-40°C to 85°C
PI5A3157B Is Improved Direct Replacement for
NC7SB3157
Packaging (Pb-free & Green):
-6-pin UDFN 1mm×1mm
-6-pin SC70
Application
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Cell Phones
PDAs
MP3 Players
Portable Instrumentation
Battery powered Communications
Computer Peripherals
Pin Assignment
B1 1
6 S
V
CC
1
6 S
5 GND
4 B0
GND 2
B0 3
5 VCC
B1 2
A
3
4 A
SC70-6
UDFN-6
Pin Description
Pin No
SC70-6 UDFN-6
1
2
2
5
3
4
4
3
5
1
6
6
Pin Name
B1
GND
B0
A
V
CC
S
Description
Data Port
Ground
Data Port (Normally connected)
Common Output/Data Port
Positive Power Supply
Logic control
Logic Function Table
Logic Inputs(S)
0
1
Function
B
0
connect to A
B
1
connect to A
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PI5A3157B
Low Voltage SPDT Analog Switch
2: 1 Mux/Demux Bus Switch
Maximum Ratings
Storage Temperature…………………………………...-65℃ to +150℃
Ambient Temperature with Power Applied......................-40℃ to +85℃
Supply Voltage V
CC
……………………………………..-0.5V to +7.0V
DC Switch Voltage V
S
……………………………-0.5V to V
CC
+0.5V
DC Input Voltage V
IN
… ……………………………..-0.5V to +7.0V
DC Output Current V
OUT
… …………………………………….128mA
DC V
CC
or Ground Current I
CC
/I
GND
… ………………………±100mA
Junction Temperature under Bias (T
J
) ...........................................150°C
Junction Lead Temperature (T
L
)
(Soldering, 10 seconds) ................................................................ 260°C
Power Dissipation (P
D
) @ +85°C ...............................................180mW
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other
conditions above those indicated in the operational
sections of this specification is not implied.
Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
Recommended Operating Conditions
Conditions
-
-
-
-
-
Control Input V
CC
= 2.3V to 3.6V
Input Rise and Fall Time
t
r
,
t
f
Control Input V
CC
= 4.5V to 5.5V
Note: Control input must be held HIGH or LOW; it must not float.
Symbol
V
CC
V
IN
V
S
V
OUT
T
A
Parameter
Operating Voltage
Control Input Voltage
Switch Input Voltage
Output Voltage
Operating Temperature
Min.
1.65
0
0
0
-40
0
0
Typ.
-
-
-
-
25
-
-
Max.
5.5
V
CC
V
CC
V
CC
85
10
5
Unit
V
V
V
V
°C
ns/V
ns/V
PT0353-3
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PI5A3157B
Low Voltage SPDT Analog Switch
2: 1 Mux/Demux Bus Switch
DC Electrical Characteristics
(T
A
= –40°C to 85°C, unless otherwise noted.)
Parameter
V
IAR
Description
Analog Input Signal Range
Test Conditions
V
CC
V
CC
=4.5V, I
O
= 30mA, V
IN
= 0V
V
CC
=4.5V, I
O
=-30mA, V
IN
=2.4V
V
CC
=4.5V, I
O
=-30mA, V
IN
=4.5V
V
CC
=4.5V, I
O
=30mA, V
IN
= 0V
V
CC
=4.5V, I
O
=-30mA, V
IN
=2.4V
V
CC
=4.5V, I
O
=-30mA, V
IN
=4.5V
V
CC
=3.0V, I
O
=24mA, V
IN
=0V
V
CC
=3.0V, I
O
=-24mA, V
IN
=3.0V
V
CC
=3.0V, I
O
=24mA, V
IN
=0V
V
CC
=3.0V, I
O
=-24mA, V
IN
=3.0V
V
CC
=2.3V, I
O
=8mA, V
IN
=0V
V
CC
=2.3V, I
O
=-8mA, V
IN
=2.3V
V
CC
=2.3V, I
O
=8mA, V
IN
=0V
V
CC
=2.3V, I
O
=-8mA, V
IN
=2.3V
V
CC
=1.65V, I
O
=4mA, V
IN
=0V
V
CC
=1.65V, I
O
=-4mA, V
IN
=1.65V
V
CC
=1.65V, I
O
=4mA, V
IN
= 0V
V
CC
=1.65V, I
O
=-4mA, V
IN
=1.65V
V
CC
=4.5V, I
A
=-30mA, V
Bn
=3.15V
V
CC
=3.0V, I
A
=-24mA, V
Bn
=2.1V
V
CC
=2.3V, I
A
=-8mA, V
Bn
=1.6V
V
CC
=1.65V, I
A
=-4mA, V
Bn
=1.15V
V
CC
=5.0V, I
A
=-30mA,0≤V
Bn
≤V
CC
V
CC
=3.3V, I
A
=-24mA,0≤V
Bn
≤
V
CC
V
CC
=2.5V, I
A
=-8mA, 0
≤
V
Bn
≤
V
CC
V
CC
=1.8V, I
A
=-4mA, 0
≤
V
Bn
≤
V
CC
V
CC
=1.65V
V
CC
= 2.3V
V
CC
= 3V
V
CC
= 4.2V
V
CC
= 5.5V
V
CC
=1.65V
V
CC
= 2.3V
V
CC
= 3V
V
CC
= 4.2V
V
CC
= 5.5V
0≤V
IN
≤5.5V,
V
CC
=0V to 5.5V
0≤V
IN
≤5.5V,
V
CC
=1.65V to 5.5V
All channels ON or OFF, V
IN
= V
CC
or GND, I
OUT
=0, V
CC
= 5.5V
Temperature
(T
A
:ºC)
-40°C to 85°C
25°C
-40°C to 85°C
25°C
-40°C to 85°C
25°C
-40°C to 85°C
25°C
-40°C to 85°C
25°C
Min
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
1.2
1.3
1.5
1.8
-
-
-
-
-
-
-
-
-
-
-
Typ
-
4
5
7
-
-
-
5
10
-
-
6
13
-
-
8
20
-
-
0.15
0.2
0.3
0.5
6
12
22
90
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max
V
CC
6
8
11
6
8
11
8
15
8
15
9
20
9
20
12
30
12
25
-
-
-
-
-
-
-
-
-
-
-
-
-
0.4
0.6
0.8
1
1.2
±0.1
±1.0
±0.1
±10
1
5
Units
V
R
ON
ON Resistance
(1)
Ω
∆R
ON
ON Resistance Match
Between Channels
(1,2,3)
Ω
R
ONF
ON Resistance
Flatness
(1,2,4)
25°C
Ω
V
IH
Input High
Voltage
(Logic High Level)
-40°C to 85°C
V
V
IL
Input Low
Voltage
(Logic
Low Level)
-40°C to 85°C
V
I
LKC
I
OFF
I
CC
Input Leakage Current
OFF State Leakage
Current
Quiescent Supply Current
25°C
-40°C to 85°C
25°C
-40°Cto 85°C
25°C
-40°C to 85°C
µA
µA
µA
Notes:
1. Measured by voltage drop between A and B pins at the indicated current through the device. ON resistance is determined by the lower
of the voltages on two ports (A or B).
2. Parameter is characterized but not tested in production.
3. DRON = RON max – RON min. measured at identical VCC, temperature and voltage levels.
4. Flatness is defined as difference between maximum and minimum value of ON resistance over the specified range of conditions. Guaranteed
by design.
PT0353-3
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PI5A3157B
Low Voltage SPDT Analog Switch
2: 1 Mux/Demux Bus Switch
Capacitance
(1)
(T
A
= 25°C, unless otherwise noted.)
Symbol
Parameter
C
IN
Control Input
C
IO-B
For B Port, Switch OFF
C
IOA-ON
For A Port, Switch ON
Test Conditions
V
CC
= 5.0V, f =1 MHz
(1)
Min.
-
-
-
Typ.
2.5
5.0
15.0
Max.
-
-
-
Units
pF
Notes:
1. Capacitance is characterized but not tested in production
Switch and AC Characteristics
(1)
Parameter
t
PLH
t
PHL
Description
Propagation
Delay: A to Bn
Test Conditions
See test circuit diagrams 1
and 2. V
I
Open
(2)
Supply
Voltage
V
CC
=2.3V to 2.7V
V
CC
=3.0V to 3.6V
V
CC
=4.5V to 5.5V
V
CC
=1.65V to 1.95V
V
CC
=2.3V to 2.7V
V
CC
=3.0V to 3.6V
V
CC
=4.5V to 5.5V
V
CC
=1.65V to 1.95V
V
CC
=2.3V to 2.7V
V
CC
=3.0V to 3.6V
V
CC
=4.5V to 5.5V
V
CC
=1.65V to 1.95V
V
CC
=2.3V to 2.7V
V
CC
=3.0V to 3.6V
V
CC
=4.5V to 5.5V
V
CC
= 5.0V
V
CC
= 3.3V
V
CC
=1.65V to 5.5V
V
CC
=1.65V to 5.5V
V
CC
=1.65V to 5.5V
Temperature
Min Typ Max Units
(T
A
: ºC)
-
–40 to 85°C
-
-
-
-40 to 85°C
-
-
-
-
-40 to 85°C
-
-
-
0.5
-40 to 85°C
0.5
0.5
0.5
25°C
-
-
-
-
-
0.7
0.6
0.4
9
5
3
2
9
6
5
3
-
-
-
-
5
4
-63
-64
350
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
dB
25°C
25°C
-
-
MHz
pC
ns
t
PZL
t
PZH
Output Enable Turn
ON Time:
A to Bn
See test circuit diagrams
1&2.
V
I
= 2VCC for t
PZL
,
V
I
= 0V for t
PZH
t
PLZ
t
PHZ
See test circuit diagrams 1
and 2.
Output Disable Turn
V
I
= 2VCC for t
PLZ
,
OFF Time:A to Bn
V
I
= 0V for t
PHZ
t
BM
Break Before
Make Time
See test circuit diagram 3.
Q
Charge
Injection
Off Isolation
OIRR
X
TALK
f3dB
C
L
= 0.1nF, V
GEN
= 0V,
R
GEN
=0
Ω
.
See test circuit 4.
R
L
=50Ω, V
GEN
=0V, R
GEN
=0Ω, f =10MHz.
See test circuit 5
(3)
(4)
25°C
Crosstalk Isolation
–3dB Bandwidth
See test circuit 6
See test circuit 9
Notes:
1. Guaranteed by design.
2. The device contributes no other propagation delay other than the RC delay of the switch ON resistance and the 50pF load capacitance,
when driven by an ideal voltage source with zero output impedance.
3. Off Isolation = 20 Log10 [ VBn/VA ] and is measured in dB.
4. Crosstalk Isolation = 20 Log10 [ VB1/VB0 ] and is measured in dB.
PT0353-3
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PI5A3157B
Low Voltage SPDT Analog Switch
2: 1 Mux/Demux Bus Switch
Test Circuits and Timing Diagrams
Note: Input driven by 50ohm source terminated in 500ohm
Note: C
L
Includes load and stray capacitance
Note: Input PRR=1.0MHz, t
W
=500nS
S
PT0353-3
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09/28/10
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