Page 1
®
SP332
RS-232/RS-485 Multi-Mode Serial Transceiver
■ +5V-Only Single Supply Operation
■ 4 Drivers, 4 Receivers RS-232
■ 2 Drivers, 2 Receivers RS-485
■ Loop Back Function for Self Test
■ 28 Pin SOIC Packaging
DESCRIPTION…
The SP332 is a monolithic device that contains both RS-232 and RS-485 line drivers and
receivers. The configuration of the SP332 can be changed at any time by changing the logic
state of two control input pins. The device also includes a loop back function which internally
connects driver outputs to receiver inputs for a chip self test. A Sipex-patented charge pump
(5,306,954) allows +5V-only operation.
RS-232 Mode Full Duplex RS-485
9
0.1µF
12
11
0.1µF
13
24
0V
2
0V
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
26
27
28
1
19
20
21
22
8
C1+
C1-
C2+
C2SEL A
SEL B
TI1
TI2
TI3
TI4
RX1
RX2
RX3
RX4
GND
400KΩ
400KΩ
400KΩ
400KΩ
+5V
5
VCC
SP332
Vcc
T1
Vcc
T2
Vcc
T3
Vcc
T4
R1
R2
R3
R4
SHUT
DOWN
5KΩ
5KΩ
5KΩ
5KΩ
LOOP
BACK
TX1
TX2
TX3
TX4
RI2
+5V
V+
14
V-
0.1µF
23
TTL/CMOS
6
RS-232
7
RS-232
4
RS-232
3
RS-232
RI1
15
RS-232
16
RS-232
RI3
17
RS-232
RI4
18
RS-232
25
TTL/CMOS
0.1µF
0.1µF
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
0.1µF
10
+5V
+5V
9
12
11
13
24
2
26
27
28
1
19
20
21
22
8
C1+
C1-
C2+
C2-
SEL A
SEL B
TI1
TI2
TI3
TI4
RX1
RX2
RX3
RX4
GND
SP332
Vcc
Vcc
T1
T3
R1
R3
5
VCC
LOOP
BACK
TX2
TX1
TX4
TX3
SHUT
DOWN
0.1µF
10
V+
14
V-
0.1µF
23
TTL/CMOS
7
RS-485/RS-232
6
RS-485/RS-232
3
RS-485/RS-232
4
RS-485/RS-232
16
RI2
RI1
RI3
15
18RI4
17
25
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
TTL/CMOS
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
1
Page 2
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
VCC............................................................................................................+12V
Input Voltages
Driver Outputs......................................................................................±15V
Storage Temperature..................................................-65˚C to +150˚C
Power Dissipation..........................................................................1000mW
Logic........................................................-0.5V to (VCC+0.5V)
Drivers..................................................-0.5V to (VCC+0.5V)
Receivers.................................................±30V@≤100mA
SPECIFICATIONS
T
to T
and VCC = 5V±5% unless otherwise noted.
MIN
MAX
PARAMETER MIN. TYP. MAX. UNITS CONDITIONS
RS-485 DRIVER
DC Characteristics
Differential Output Voltage GND V
Differential Output Voltage 2.0 5.0 Volts With Load; R=50Ω (RS-422);
Differential Output Voltage 1.5 5.0 Volts With Load; R=27Ω (RS-485);
Change in Magnitude of Driver
Differential Output Voltage for
Complementary States 0.2 Volts
Driver Common-Mode Output
Voltage 3 Volts R=27Ω or R=50Ω;
Input High Voltage 2.0 Volts Applies to transmitter inputs,
Input Low Voltage 0.8 Volts Applies to
Input Current ±10 µA Applies to:
Pull-Up Current 1.5 µA transmitter inputs, LB
Pull-Down Current 3.0 µA SEL A, SEL B, SD,
Driver Short-Circuit
Current
V
= HIGH 35 250 mA -7V≤VO≤10V
OUT
V
= LOW 35 250 mA -7V≤VO≤10V
OUT
AC Characteristics
Driver Data Rate 10 Mbps
Driver Input to Output 70 180 ns R
t
PLH
Driver Input to Output 70 180 ns R
t
PHL
Driver Skew 5 10 ns From output to output;
Driver Rise or Fall Time 3 15 40 ns From 10% to 90%; R
Volts Unloaded; R=∞;
CC
see figure 1
see figure 1
see figure 1
R=27Ω or R=50Ω;
see figure 1
see figure 1
SEL A, SEL B, SD, LB
SEL A, SEL B, SD, LB
=54Ω, CL1=CL2=100pF;
DIFF
see figures 3 and 6
=54Ω, CL1=CL2=100pF;
DIFF
see figures 3 and 6
see figures 3 and 6
CL1=CL2=100pF;
see figures 3 and 6
DIFF
=54Ω,
RS-485 RECEIVER
DC Characteristics
Differential Input Threshold -0.2 +0.2 Volts -7V≤VCM≤12V
Input Hysteresis 70 mV VCM=0V
Output Voltage High 3.5 Volts IO=-4mA, VID=+200mV
Output Voltage Low 0.4 Volts IO=+4mA, VID=-200mV
Input Resistance 12 15 kΩ -7V≤VCM≤12V
Input Current (A, B); VIN= 12V +1.5 mA VIN= 12V, A is the non-inverting
receiver input. B is the inverting
receiver input
Input Current (A, B); VIN= -7V -0.8 mA VIN= -7V
Short Circuit Current 85 mA 0V≤VCM≤V
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
CC
2
Page 3
SPECIFICATIONS (CONTINUED)
T
to T
and VCC = 5V±5% unless otherwise noted.
MIN
MAX
PARAMETER MIN. TYP. MAX. UNITS CONDITIONS
AC Characteristics
Receiver Data Rate 10 Mbps
Receiver Input to Output 130 250 ns R
t
PLH
Receiver Input to Output 130 250 ns R
t
PHL
Diff. Receiver Skew |t
|13 nsR
PLH-tPHL
RS-232 DRIVER
DC Characteristics
TTL Input Levels
V
V
IL
IH
2.0 Volts Applies to transmitter inputs,
0.8 Volts Applies to transmitter inputs,
Voltage Outputs
High Level Output +5.0 +15.0 Volts RL=3kΩ to Gnd
Low Level Output -15.0 -5.0 Volts RL=3kΩ to Gnd
Open Circuit Output ±15 Volts RL=∞
Short Circuit Current ±100 mA V
Power Off Impedance 300 Ohms VCC=0V; V
AC Characteristics
Transmission Rate 120 kbps
Transition Time 1.56 µs Rise/fall time, +3V to -3V; -3V to +3V
Propagation Delay
t
t
PHL
PLH
24µsR
36µsR
Slew Rate 10 30 V/µsRL=3kΩ, CL=50pF; From +3V
RS-232 RECEIVER
TTL Output Levels
V
OL
V
OH
Receiver Input
High Threshold
Low Threshold
3.5 I
2.1 3.0 Volts
0.8 1.6 Volts
0.4 Volts I
Input Voltage Range -15 +15 Volts
Input Impedance 3 5 7 kOhms VIN=±15V
Hysteresis 0.2 0.5 1.0 Volts VCC=+5V
=54Ω, CL1=CL2=100pF;
DIFF
Figures 3 and 8
=54Ω, CL1=CL2=100pF;
DIFF
Figures 3 and 7
=54Ω, CL1=CL2=100pF;
DIFF
Figures 3 and 7
SEL A, SEL B, SD, LB
SEL A, SEL B, SD, LB
= 0V
OUT
OUT
= ±2V
RL=3kΩ, CL=2500pF
=3kΩ, CL=2500pF; From 1.5V
L
of T
to 50% of V
IN
=3kΩ, CL=2500pF; From 1.5V
L
of T
to 50% of V
IN
OUT
OUT
to -3V or -3V to +3V
= 4mA
SINK
= -4mA
SOURCE
AC Characteristics
Transmission Rate 120 kbps
Transition Time 50 ns Rise/fall time 10% to 90%
Propagation Delay
t
PHL
t
PLH
100 300 ns From 50% of V
100 200 ns From 50% of V
to 1.5V of R
IN
to 1.5V of R
IN
OUT
OUT
POWER REQUIREMENTS
No Load Supply Current 19 25 mA No load; VCC=5.0V; TA=25˚C
Full Load Supply Current 90 120 mA RS-232 drivers RL=3kΩ to Gnd;
DC Input
RS-485 drivers RL=54Ω from
A to B; DC Input
Shutdown Supply Current 5 50 µAT
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
=25˚C, VCC=5.0V
A
3
Page 4
A
R
V
OD
V
OC
R
Receiver
Output
C
RL
1K
B
1KTest Point
V
S
1
S
2
CC
Figure 1. RS-485 Driver DC Test Load Circuit Figure 2. Receiver Timing Test Load Circuit
DI
L1
R
A
DIFF
B
C
L2
A
B
RO
15pF
Output
Under
Test
C
500
L
S
S
V
1
2
CC
C
Figure 3. RS-485 Driver/Receiver Timing Test Circuit Figure 4. RS-485 Driver Timing Test Load #2 Circuit
+3V
DI
0V
DRIVER
OUTPUT
DIFFERENTIAL
OUTPUT
V
–
V
A
B
A
V
+
O
0V
V
–
O
B
V
1/2V
O
O
Figure 6. RS-485 Driver Propagation Delays
V
+
A – B
R
OD2
V
–
OD2
V
OH
V
OL
t
PHL
0V
1.5V
f = 1MHz; tR ≤ 10ns; tF ≤ 10ns
1.5V
f = 1MHz; t
t
PLH
t
SKEW
t
R
≤ 10ns; tF ≤ 10ns
R
t
PHL
OUTPUT
t
PHL
1.5V
0VINPUT
1.5V
t
PLH
1/2V
t
SKEW
t
F
O
Figure 7. RS-485 Receiver Propagation Delays
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
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Page 5
THEORY OF OPERATION...
The SP332 is a single chip device that can be
configured via software for either RS-232, RS485 or both interface modes at any time. The
SP332 is made up of three basic circuit elements, single-ended drivers and receivers, differential drivers and receivers and charge pump.
DIFFERENTIAL DRIVER/RECEIVER...
RS-485, RS-422 Drivers...
The differential drivers and receivers comply
with the RS-485 and RS-422 standards. The
driver circuits are able to drive a minimum of
1.5V when terminated with a 54Ω resistor
across the two outputs. The typical propagation
delay from the driver input to output is 60ns. The
driver outputs are current limited to less than
250mA, and can tolerate short circuits to ground,
or to any voltage within a +10V to -7V range
with no damage.
RS-485, RS-422 Receivers...
The differential receivers of the SP332 comply
with the RS-485, RS-422 and V.11 standards.
The input to the receiver is equipped with a
common mode range of +12V to -7V. The input
threshold over this range is a minimum of
±200mV. The differential receivers can receive
data up to 10Mbps. The typical propagation
delay from the receiver input to output is 90ns.
RS-232 (V.28) Receivers...
The RS-232 receivers convert RS-232 input
signals to inverted TTL signals. Each of the four
receivers features 500mV of hysteresis margin
to minimize the affects of noisy tranmission
lines. The inputs also have a 5kΩ resistor to
ground, in an open circuit situation the input of
the receiver will be forced low, committing the
output to a logic high state. The input resistance
will maintain 3kΩ-7kΩ over a ±15V range. The
maximum operating voltage range for the receiver is ±30V, under these conditions the input
current to the receiver must be limited to less
than 100mA. Due to the on-chip ESD protection
circuitry, the receiver inputs will be clamped to
±15V levels. The RS-232 receivers can operate
up to 120kbps.
CHARGE PUMP...
The charge pump is a Sipex-patented design
(5,306,954) and uses a unique approach compared to older less-efficient designs. The charge
pump still requires four external capacitors, but
uses a four-phase voltage shifting technique to
attain symmetrical 10V power supplies. Figure
8a shows the waveform found on the positive
side of capacitor C2, and Figure 8b shows the
negative side of capacitor C2. There is a freerunning oscillator that controls the four phases
of the voltage shifting. A description of each
phase follows.
SINGLE ENDED DRIVER/RECEIVER...
Phase 1
-Vss charge storage- During this phase of the
RS-232 (V.28) Drivers...
The single-ended drivers and receivers comply
the with the RS-232E and V.28 standards. The
drivers are inverting transmitters which accept
either TTL or CMOS inputs and output the RS232 signals with an inverted sense relative to the
clock cycle, the positive side of capacitors C1
and C2 are initially charged to +5V. C1+ is then
switched to ground and charge in C1- is transferred to C2-. Since C2+ is connected to +5V,
the voltage potential across capacitor C2 is
now 10V.
input logic levels. Typically, the RS-232 driver
output voltage swing is ±9V with no load and is
guaranteed to be greater than ±5V under full
load. The drivers rely on the V+ and V- voltages
generated by the on-chip charge pump to maintain proper RS-232 output levels. With worst
case load conditions of 3kΩ and 2500pF, the
four RS-232 drivers can still maintain ±5V
output levels. The drivers can operate up to
120kbps; the propagation delay from input to
Phase 2
-Vss transfer- Phase two of the clock connects
the negative terminal of C2 to the Vss storage
capacitor and the positive terminal of C2 to
ground, and transfers the generated -10V to C3.
Simultaneously, the positive side of capacitor
C1 is switched to +5V and the negative side is
connected to ground.
output is typically 2µs.
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
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Page 6
V
CC1
5V
1µF1µF
+10V
+
a) C
2
GND
1µF1µF
GND
–
b) C
2
–10V
OPTIONAL SIGNALS
Figure 8. Charge Pump Waveforms
ISO 2593
34-PIN DTE/DCE
INTERFACE
CONNECTOR
=
T
TXD (103)
P
S
SCTE (113)
U
W
TXC (114)
AA
Y
RXC (115)
X
V
TRTXD (104)
GND (102)
B
CABLE SHIELD
A
DTR (108)
H
RTS (105)
C
DSR (107)
E
CTS (106)
D
DCD (109)
F
TM (142)
NN
RDL (140)
N
LLB (141)
L
50Ω
50Ω
34-PIN DTE/DCE
125Ω
P
S
U
W
AA
Y
X
V
T
R
B
A
H
C
E
D
F
NN
N
L
ISO 2593
INTERFACE
CONNECTOR
1µF
T
T
T
T
T
V
CC2
1µF
1µF1µF
1µF
1µF
V.35 V.35
DX
DX
RX
RX
RX
V
CC1
1µF
1µF
RS-232 RS-232
DX
DX
RX
RX
RX
RX
DX
DX
T
T
T
T
T
1µF
RX
RX
DX
DX
DX
1µF
RX
RX
DX
DX
DX
DX
RX
RX
V
CC2
5V
VCC = +5V
+10V
++
C
1
C
2
––
Figure 9. Charge Pump Phase 1
V
= +5V
CC
++
C
1
C
2
––
–10V
Figure 11. Charge Pump Phase 3
C
4
+
–
Storage Capacitor
V
DD
+
–
V
Storage Capacitor
SS
C
3
C
4
+
–
Storage Capacitor
V
DD
+
–
V
Storage Capacitor
SS
C
3
V
= +5V
CC
+5V
++
C
1
C
2
––
–5V –5V
Figure 10. Charge Pump Phase 2
V
= +5V
CC
+5V
++
C
1
–5V
C
2
––
–5V
Figure 12. Charge Pump Phase 4
C
4
+
–
Storage Capacitor
V
DD
+
–
V
Storage Capacitor
SS
C
3
C
4
+
–
Storage Capacitor
V
DD
+
–
V
Storage Capacitor
SS
C
3
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
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Page 7
Phase 3
-Vdd charge storage- The third phase of the
clock is identical to the first phase- the transferred charge in C1 produces -5V in the negative
terminal of C1, which is applied to the negative
side of capacitor C2. Since C2+ is at +5V, the
Since both V+ and V- are separately generated
from Vcc in a no load condition, V+ and V- will
be symmetrical. Older charge pump approaches
that generate V- from V+ will show a decrease
in the magnitude of V- compared to V+ due to
the inherent inefficiencies in the design.
voltage potential across C2 is 10V.
The clock rate for the charge pump typically
Phase 4
-Vdd transfer- The fourth phase of the clock
operates at 15kHz. The external capacitors must
be 0.1µF with a 16V breakdown rating.
connects the negative terminal of C2 to ground
and transfers the generated 10V across C2 to C4,
the Vdd storage capacitor. Simultaneously with
this, the positive side of capacitor C1 is switched
to +5V and the negative side is connected to
ground, and the cycle begins again.
SP332 TYPICAL OPERATING CIRCUIT
RS-232 Mode RS-485 Mode
0.1µF
0.1µF
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
+5V
C1+
C1-
C2+
C2-
SEL A
SEL B
400KΩ
TI1
400KΩ
400KΩ
400KΩ
TI4
GND
SP332
Vcc
T1
Vcc
T2
Vcc
T3
Vcc
T4
5
VCC
R1
R2
R3
R4
SHUT
DOWN
LOOP
BACK
5KΩ
5KΩ
5KΩ
5KΩ
TX1
TX2
TX3
TX4
RI1
RI2
RI3
RI4
0.1µF
10
V+
14
V-
0.1µF
23
TTL/CMOS
6
RS-232
7
RS-232
4
RS-232
3
RS-232
15
RS-232
16
RS-232
17
RS-232
18
RS-232
25
TTL/CMOS
0.1µF
0.1µF
+5V
+5V
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
9
12
11
13
24
2
26
27
28
1
19
20
21
22
8
9
12
11
13
24
0V
2
0V
26
27
TI2
28
TI3
1
RX1
19
RX2
20
RX3
21
RX4
22
8
C1+
C1-
C2+
C2-
SEL A
SEL B
400KΩ
TI1
TI2
400KΩ
TI3
TI4
RX1
RX2
RX3
RX4
GND
Vcc
Vcc
+5V
5
VCC
SP332
T1
T3
R1
R3
LOOP
BACK
15KΩ
15KΩ
SHUT
DOWN
TX2
TX1
TX4
TX3
15KΩ
15KΩ
RI3
V+
V-
RI2
RI1
10
14
16
15
18RI4
17
23
7
6
3
4
25
0.1µF
0.1µF
TTL/CMOS
RS-485
RS-485
RS-485
RS-485
RS-485
RS-485
RS-485
RS-485
TTL/CMOS
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
7
Page 8
SP332 CONTROL LOGIC CONFIGURATION
SEL A 0 0 1 1
SEL B 0 1 0 1
LOOPBACK 1 1 1 1
SHUTDOWN 0 0 0 0
TX1TI1 626
T1
TI2727
RX21620
RX31721
RX41822
TX2
T2
TX3TI3428
T3
TX4TI41
T4
RI1RX1 1519
R1
RI2
R2
RI3
R3
RI4
R4
27
28
3
21 RX3
TI126
TI2 TX2
TI3
RX11519
RX2 RI2 1620
TX1 6
T1
T2
T3
R1
R2
R3
RI1
RI4
26
TI1
7
4TX3
3TX4
17RI3
18
T1
TI3428
T3
TI41
T4
RX1
19
R1
RX3
21
R3
RX41822
R4
TX3
TX4
RI3
RI4
6TX1
26
7TX2
3
15RI1
16RI2
17
TI1
28
TI3
RX1
19
21 RX3
SEL A 0 0 1 1
SEL B 0 1 0 1
LOOPBACK 0 0 0 0
SHUTDOWN 0 0 0 0
6TI126
TX1
T1
7
TI227
TI328
TI41
TX2
T2
4
TX3
T3
3
TX4
T4
28 TI3
T1
TI227
T2
T3
TX1 6TI126
TX2
TX3
TX4
6TX1
26
TI1
7TX2
3
T1
28
TI3
T3
TI1
26
7
4TX3
3TX4
T1
TI3428
T3
TI41
T4
T1
T3
R1
R3
6TX1
7TX2
4TX3
3TX4
15RI1
16RI2
17RI3
18RI4
6TX1
7TX2
4TX3
3TX4
19
RX1
RX220
RX321
22
RX4
RI1
R1
RI2
R2
RI3
R3
RI4
R4
RX119
15
RX2
20
16
17
21 RX3
18
RI1
RI2 16
15
19
RX1
R1
21
17RI3
18RI4
R3
R4
R1
R2
R3
RI3RX3 17
RI4RX4 1822
15RI1
19
RX1
21 RX3
R1
R3
16RI2
RI4
15RI1
16RI2
17RI3
18
Receiver Inputs are inactive in Loopback Mode (LOOPBACK = 0)
Driver Outputs are Tri-Stated in Loopback Mode (LOOPBACK = 0)
Unused Outputs are Tri-Stated
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
8
Page 9
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
A
A1
B
D
E
e
H
L
Ø
28–PIN
0.090/0.100
(2.29/2.54)
0.004/0.010
(0.102/0.254)
0.015/0.020
(0.38/0.508)
0.720/0.730
(18.24/18.54)
0.395/0.405
(10.03/10.29)
0.050 BSC
(1.270 BSC)
0.531/0.545
(13.49/13.84)
0.021/0.041
(0.53/1.04)
0°/8°
(0°/8°)
-
-
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
TI4
SEL B
TX4
TX3
VCC
TX1
TX2
GND
C1+
V+
C2+
C1
C2
V-
10
11
12
13
14
1
2
3
4
5
6
7
8
9
SP332
28
27
26
25
24
23
22
21
20
19
18
17
16
15
TI3
TI2
TI1
SD
SEL A
LB
RX4
RX3
RX2
RX1
RI4
RI3
RI2
RI1
PACKAGE: PLASTIC
SMALL OUTLINE (SOIC)
0.093/0.104
(2.352/2.649)
0.004/0.012
EH
D
A
Be
A1
9
(0.102/0.300)
0.013/0.020
(0.330/0.508)
0.697/0.713
(17.70/18.09)
0.291/0.299
(7.402/7.600)
0.050 BSC
(1.270 BSC)
0.394/0.419
(10.00/10.64)
0.016/0.050
(0.406/1.270)
0˚/8˚
(0˚/8˚)
Ø
L
Page 10
ORDERING INFORMATION
Model Temperature Range Package Types
SP332CT .............................................................................. 0˚C to +70˚C .........................................................................................28-Pin SOIC
SP332ET ............................................................................. -40˚C to +85˚C ........................................................................................28-Pin SOIC
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.
TGoddard/SP332/9617R0 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver © Copyright 2000 Sipex Corporation
10
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