SP206 / SP207 / SP208 / SP211
+5V RS-232 Serial Transceivers
FEATURES
T3 OUT
1
24
T4 OUT
T1OUT
2
23
R2IN
T2OUT
3
22
R2OUT
R1IN
4
21
SD
R1OUT
5
20
EN
T2IN
6
19
T4IN
T1IN
7
18
T3IN
GND
8
17
R3OUT
VCC
9
16
R3IN
C1+
10
15
V–
V+
11
14
C 2–
C 1–
12
13
C 2+
SP206
• 0.1μF External Charge Pump Capacitors
• 120kbps Data Rate
• Standard SOIC and SSOP Packaging
• Multiple Drivers and Receivers
• Single 5V Supply Operation
• 1.0μA Shutdown Mode
• Tri-State Receiver Outputs
• Meets all RS-232F and V.28 Specifications
• Improved Driver Output Capacity for Mouse
Applications
• +/-10kV ESD Protection*
SP208 (24 pin SSOP version) is available; SP206, SP207,
SP211 and 24 pin WSOIC version of SP208 are obsolete.
Now Available in Lead Free Packaging
Note: See page 4 for other pinouts
DESCRIPTION
The SP206, SP207, SP208 and SP211 are multi-channel RS-232 line transceivers in a variety of
configurations to fit most communication needs. All models in this series feature low-power CMOS
construction and Exar Patented (5,306,954) on-board charge pump circuitry to generate the +/-10V
RS-232 voltage levels, using 0.1µF charge pump capacitors to save board space and reduce circuit
cost. The SP206 and SP211 models feature a low-power shutdown mode which reduces power supply drain to 1 µA.
Model
Number of RS-232
Drivers
Receivers
No. of RX
active in
Shutdown
No. of External
0.1μF Capacitors
Shutdown
WakeUp
TTL Tri-State
SP206
4
3
0
4
Yes
No
Yes
SP207
5
3
0
4
No
No
No
SP208
4
4
0
4
No
No
No
SP211
4
5
0
4
Yes
No
Yes
Table 1. Mode Selection Table
* All Driver Outputs and Receiver Inputs characterized per MIL-STD-883C Method 3015.7
111
s
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 are not implied. Exposure to absolute Package Power Dissipation:
maximum ratings conditions for extended periods of 24-pin SSOP
(derate .2mW/°C above +70°C)..............900mW
time may affect reliability.
Supply Voltage (VCC)....................................................+ 6V
V+........................................................................... (Vcc-0.3V) to +13.2V
V- .............................................................................-13.2V
Input Voltages
Tin.....................................................-0.3V to (Vcc + 0.3V)
Rin............................................................................+/-20V
Output Voltages
Tout.............................................(V+, +0.3V) to (V-, -0.3V)
Rout...................................................-0.3V to (Vcc + 0.3V)
Short Circuit duration on Tout...........................Continuous
24-pin WSOIC
(derate 2.5mW/°C above +70°C)............000mW
28-pin SSOP
(derate .2mW/°C above +70°C)..............900mW
28-pin WSOIC
(derate 2.7mW/°C above +70°C)............000mW
Storage Temperature..................-65°C to +150°C
Lead Temperature (soldering, 10s).......... +300°C
Vcc = 5V, C1 to C4 = 0.1μF, Tmin to Tmax, unless otherwise noted.
PARAMETER
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS
MIN
TYP
MAX
UNIT
TTL INPUT
Logic Threshold LOW, VIL
TIN, EN, SD
Logic Threshold HIGH, VIH
TIN, EN, SD
0.8
2.0
Logic Pull-Up Current
TIN = 0V
Maximum Data Rate
CL = 2500pF, RL = 3kΩ
Volts
Volts
15
200
120
μA
kbps
TTL OUTPUT
Output Voltage LOW, VOL
Iout = 3.2mA: Vcc = +5V
Output Voltage HIGH, VOH
Iout = -1.0mA
Leakage Current
0.4
3.5
EN = Vcc, 0V ≤ Vout ≤ Vcc
Volts
0.05
Ta=25°C
Volts
+/-10
μA
RS-232 OUTPUT
Output Voltage Swing
All Transmitter outputs loaded
with 3k ohms to GND
+/-5.0
Output Resistance
Vcc = 0V, Vout = +/-2V
300
Output Short Circuit Current
Infinite Duration
+/-7
Volts
Ohms
+/-25
mA
RS-232 INPUT
-15
Voltage Range
Voltage Threshold LOW
Vcc = 5V, Ta=25°C
Voltage Threshold HIGH
Vcc = 5V, Ta=25°C
Hysteresis
Vcc = 5V
Resistance
Ta=25°C, -15V ≤ Vin ≤ +15V
+15
Volts
1.7
2.4
Volts
0.2
0.5
1.0
Volts
3
5
7
kΩ
0.8
1.2
Volts
111
ELECTRICAL CHARACTERISTICS
Vcc = 5.0V, C1 to C4 = 0.1μF, Tmin to Tmax , unless otherwise noted.
TEST CONDITIONS
Parameter
MIN
TYP
MAX
Unit
30
V/ μs
DYNAMIC CHARACTERISTICS
Receiver Propagation Delay
RS-232 to TTL,
Instantaneous Slew Rate
CL = 50pF, RL = 3-7kΩ, Ta =25°C
Transition Region Slew Rate
CL = 2500pF, RL = 3kΩ;
Measured from +3V to -3V or
-3V to +3V
μs
1.5
5
V/ μs
Output Enable Time
400
ns
Output Disable Time
250
ns
POWER REQUIREMENTS
Vcc (SP207)
4.75
5.00
5.25
Volts
Vcc (SP206, SP208 and SP211)
4.50
5.00
5.5
Volts
10
mA
Vcc Power Supply Current
No Load, Vcc = +/-0%,TA=25°C
4
Vcc Power Supply Current, Loaded
All Transmitters RL = 3kΩ,
TA=25°C
20
Shutdown Supply Current
TA=25°C
1
mA
10
μA
0
+70
°C
Operating Temperature, Extended, _E
-40
+85
°C
Storage Temperature
-65
+150
°C
ENVIRONMENTAL AND MECHANICAL
Operating Temperature, Commercial, _C
Package _A
Shrink (SSOP) small outline
Package _T
Wide (SOIC) small outline
Transmitter Output
RL = 3kΩ, CL = 5,000pF
Transmitter Output
RL = 3kΩ, CL = 2,500pF
Receiver Output
111
Package PINOUTS
T3 OUT
1
24
T4 OUT
T3 OUT
1
24
T4 OUT
T1OUT
2
23
R2IN
T1OUT
2
23
R2IN
T2OUT
R2OUT
T2OUT
3
22
R2OUT
4
21
SD
R1IN
4
21
T5IN
R1OUT
5
20
EN
R1OUT
5
20
T5OUT
T2IN
6
19
T4IN
T2IN
6
19
T4IN
T1IN
7
18
T3IN
T1IN
7
18
T3IN
GND
8
17
R3OUT
GND
VCC
9
16
R3IN
C 1+
10
15
V–
V+
11
14
C 2–
13
C 2+
C 1–
12
SP207
22
SP206
3
R1IN
8
17
R3OUT
VCC
9
16
R3IN
C 1+
10
15
V–
V+
11
14
C 2–
C 1–
12
13
C 2+
SP208 is available; SP206, SP207 and SP211 are obsolete.
T3 OUT
T3 OUT
1
28
23
R3IN
T1OUT
2
27
R3IN
T2OUT
3
26
R3OUT
T2 OUT
1
24
T1OUT
2
R2IN
3
22
R3OUT
R2OUT
4
21
T4IN
R1OUT
6
R1IN
7
GND
20
T4OUT
19
T3IN
18
T2IN
8
17
R4OUT
VCC
9
16
R4IN
C 1+
10
15
V–
V+
11
14
C 2–
C 1–
12
13
C 2+
R2IN
4
25
SHUTDOWN (SD)
R2OUT
5
24
EN
T2IN
6
23
R4IN
T1IN
7
22
R4OUT
R1OUT
8
21
T4IN
R1IN
9
20
T3IN
GND
10
19
R5OUT
VCC
11
18
R5IN
C 1+
12
17
V–
V+
13
16
C 2–
C 1–
14
15
C 2+
SP211
5
SP208
T1IN
T4 OUT
111
DESCRIPTION
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.
FEATURES
The SP206/207/208/211 multi-channel RS-232
line transceivers provide a variety of configurations to fit most communication needs, especially those applications where +/-12V is not
available. All models in this series feature lowpower CMOS construction and Exar's proprietary on-board charge pump circuitry to generate
the +/-10V RS-232 voltage levels. The ability to
use 0.1µF charge pump capacitors saves board
space and reduces circuit cost. Different models within the series provide different driver/receiver combinations to match any application
requirement.
Phase 3
Vdd charge storage: The third phase of the
clock is identical to the first phase. The charge
transferred in C1 produces -5V in the negative
terminal of C1, which is applied to the negative
side of C2. Since C2+ is at +5V, the voltage potential across C2 is 10V.
The SP206 and SP211 models feature a lowpower shutdown mode that reduces power supply drain to 1µA.
Phase 4
Vdd transfer: The fourth phase of the clock connects the negative terminal of C2 to ground,
and transfers the generated 10V across C2 to
C4, the Vdd storage capacitor. Again, 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.
The models in this series are available in 24-pin
and 28-pin SO (wide) and SSOP (shrink) small
outline packages. Devices can be specified for
commercial (0ºC to +70ºC) or industrial/extended (-40ºC to +85ºC) operating temperatures.
Theory Of Operation
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 magnitude of V- compared to V+ due
to the inherent inefficiencies in the design.
CHARGE PUMP
The charge pump is an Exar patented design
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 +/-0V power supplies. Figure a
shows the waveform found on the positive side
of capacitor C2 and Figure 3b shows the negative side of capacitor C2. There is a free-running oscillator that controls the four phases of
the voltage shifting. A description of each phase
follows:
The clock rate for the charge pump typically operates at greater than 15kHz allowing the pump
to run efficiently with small 0.1uF capacitors
with a 16V breakdown voltage rating.
The SP206/207/208/211 devices are made up
of three basic circuit blocks - 1) transmitter/
driver, 2) receiver and 3) charge pump. Each
model within the series incorporates variations
of these circuit to achieve the desired configuration and performance.
PHASE 1
Vss charge storage - During this phase of the
clock cycle, the positive side of capacitors C
and C2 are initially charged to +5V. C+ is then
switched to ground and the charge in C- is
transferred to C2-. Since C2+ is connected to
+5V, the voltage potential across capacitor C2
is now 0V.
111
DESCRIPTION
RECEIVERS
The receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usually from a transmission line where long cable
length and system interference can degrade
the signal, the inputs have a typical hysteresis
margin of 500mV. This ensures that the receiver is virtually immune to noisy transmission
lines. Should an input be left unconnected, an
internal 5kohm pull-down resistor to ground will
commit the output of the receiver to a HIGH
state.
+10V
a) C2+
GND
GND
b) C2+
-10V
SHUTDOWN MODE
The SP206 and SP2 feature a control input
(SD) which will disable the device and reduce
the power supply current to less than 0µA,
making the parts ideal for battery-powered systems. In the "shutdown" mode the receivers
and transmitters will both be tri-stated. The V+
output of the charge pump will discharge to Vcc
and the V- output will discharge to ground.
Figure 1. Charge Pump Waveforms
Transmitter/Driver
The drivers are inverting transmitters, which accept either TTL or CMOS inputs and output the
RS-232 output signals with an inverted sense
relative to the input logic levels. Typically, the
RS-232 output voltage swing is +/-9V with no
load, and +/-5V minimum with full load. The
transmitter outputs are protected against infinite short-circuits to ground without degradation in reliability. The drivers of the SP206 and
SP211 can be tri-stated by using the SHUTDOWN function.
ENABLE (EN)
The SP206 and SP2 feature an enable input
which allows the receiver outputs to be either
tri-stated or enabled. This can be especially
useful when the receiver is tied directly to a
microprocessor data bus. The enable pin is
active high.
In the "power off" state, the output impedance
will remain greater than 300 Ohms, again satisfying the RS-232 specifications. Should the input
of the driver be left open, an internal 400kOhm
pull-up resistor to Vcc forces the input high, thus
committing the output to a low state. The slew
rate of the transmitter output is internally limited
to a maximum of 30V/µs in order to meet he EIA
standards (EIA RS-232D 2,1,7, Paragraph 5).
The transition of the loaded output from high to
low also meets the monotonicity requirements
of the standard.
VCC = +5V
+5V
C1
+
–
–5V
+
C2
–
–5V
C4
+
–
VDD Storage Capacitor
–
+
VSS Storage Capacitor
C3
Figure 2, Charge pump - Phase 1
111
VCC = +5V
C4
C1
+
+
C2
–
–
+
–
VDD Storage Capacitor
–
+
VSS Storage Capacitor
C3
–10V
Figure 3, Charge pump - Phase 2
VCC = +5V
C4
+5V
C1
+
C2
–
–5V
+
–
+
–
VDD Storage Capacitor
–
+
VSS Storage Capacitor
C3
–5V
Figure 4, Charge pump - Phase 3
VCC = +5V
C4
+10V
C1
+
–
C2
+
+
–
–
–
VDD Storage Capacitor
+
VSS Storage Capacitor
C3
Figure 5, Charge pump - Phase 4
EIA STANDARDS
The Electronic Industry Association (EIA)
developed several standards of data transmission which are revised and updated in order to
meet the requirements of the industry. In data
processing, there are two basic means of communicating between systems and components.
The RS-232 standard was first introduced in
1962 and, since that time, has become an
industry standard.
+/-10kV ESD PROTECTION
The SP206/207/208/211 are equipped with
Exar proprietary ESD protection circuitry on
all RS-232 inputs and outputs. This series
has been characterized using MIL-STD-883C
Method 3015.7 Human Body Model. Each
device in the family can withstand up to +/10kV of static discharge on all RS-232 inputs
and outputs. All other pins of each device will
maintain ≥ +/-2kV of ESD protection.
The RS-232 is a relatively slow data exchange
protocol, with a maximum baud rate of only
20kbaud, which can be transmitted over a
maximum copper wire cable length of 50 feet.
The SP206 through SP211 series of data communications interface products have been designed to meet both the EIA protocol standards
, and the needs of the industry.
111
TYPICAL APPLICATION CIRCUITS
0.1µF
6.3V
0.1µF
16V
+
10
9
C1 +
VCC
V+
12 C –
1
+
13 C +
2
14
V–
11
15
SP206
0.1µF
+ 6.3V
0.1µF
6.3V
0.1µF
6.3V
0.1µF
16V
+
0.1µF
16V
C2 –
+
10
+
18
T3 IN
400kOHM
19
T4 IN
R1 OUT
R2 OUT
R3 OUT
EN
3
T2
1
T3
24
T4
5
4
R1
22
5kOHM
R2
17
5kOHM
R3
20
23
16
5kOHM
21
T2 OUT
T3 OUT
T4 OUT
TTL/CMOS INPUTS
400kOHM
V–
13 C +
2
14
11
15
SP207
0.1µF
+ 6.3V
0.1µF
16V
+
C2 –
7
T1 IN
T1 OUT
R1 IN
R2 IN
R3 IN
400kOHM
6
T2 IN
400kOHM
18
T3 IN
400kOHM
19
T4 IN
SD
2
T1
3
T2
1
T3
24
T4
400kOHM
21
T5 IN
TTL/CMOS OUTPUTS
6
T2 IN
T1
RS-232 OUTPUTS
400kOHM
V+
400kOHM
2
RS-232 INPUTS
TTL/CMOS INPUTS
TTL/CMOS OUTPUTS
T1 IN
VCC
12 C –
1
400kOHM
7
9
C1 +
5
R1 OUT
5kOHM
R2
17
R3 OUT
4
R1
22
R2 OUT
20
T5
23
5kOHM
R3
16
T1 OUT
RS-232 OUTPUTS
0.1µF
6.3V
+5V INPUT
T2 OUT
T3 OUT
T4 OUT
T5 OUT
R1 IN
R2 IN
R3 IN
RS-232 INPUTS
+5V INPUT
5kOHM
8
8
GND
GND
SP208 is available; SP206, SP207 and SP211 are obsolete.
+5V INPUT
+5V INPUT
0.1µF
16V
+
C1 +
VCC
V+
12 C –
1
+
13 C +
2
14
V–
11
15
SP208
0.1µF
6.3V
0.1µF
16V
+
0.1µF
16V
R1 OUT
R2 OUT
R3 OUT
R4 OUT
400kOHM
19
400kOHM
21
6
4
22
17
T2
T3
T4
2
1
24
20
7
R1
5kOHM
R2
R3
R4
3
5kOHM
23
5kOHM
16
T1 OUT
T2 OUT
T3 OUT
T4 OUT
R1 IN
R2 IN
R3 IN
TTL/CMOS INPUTS
400kOHM
18
T1
T1 IN
T2 IN
T3 IN
T4 IN
R1 OUT
TTL/CMOS OUTPUTS
T4 IN
5
RS-232 OUTPUTS
T3 IN
12
11
C1 +
VCC
V+
14 C –
1
+
15 C +
2
16
V–
13
17
SP211
0.1µF
+ 6.3V
0.1µF
16V
+
C2 –
400kOHM
RS-232 INPUTS
TTL/CMOS INPUTS
TTL/CMOS OUTPUTS
T2 IN
+
C2 –
400kOHM
T1 IN
0.1µF
6.3V
R2 OUT
R3 OUT
R4 OUT
R5 OUT
R4 IN
EN
7
400kOHM
6
400kOHM
20
400kOHM
21
8
5
26
22
19
24
T2
T3
T4
2
3
1
28
9
R1
5kOHM
R2
5kOHM
R3
5kOHM
R4
5kOHM
R5
5kOHM
5kOHM
8
T1
4
27
23
18
25
T1 OUT
T2 OUT
T3 OUT
T4 OUT
RS-232 OUTPUTS
0.1µF
6.3V
10
0.1µF
+ 6.3V
R1 IN
R2 IN
R3 IN
R4IN
RS-232 INPUTS
0.1µF
6.3V
9
R5 IN
SD
10
GND
GND
111
111
SP211, 28 pin SSOP versions are obsolete.
111
10
All SOICW versions are obsolete.
111
11
All SOICW versions are obsolete.
111
12
ORDERING INFORMATION(1), (2)
Drivers /
Receivers
SP208CA-L/TR
4/4
Part number
Temperature
range
Package
Package
Method
LeadFree(3)
0 to +700C
24 pin SSOP
Tape and Reel
Yes
Notes:
1. SP206, SP207, SP211 and the WSOIC24 version of SP208 are obsolete.
2. Refer to www.maxlinear.com/SP208 for most up-to-date Ordering Information.
3. Visit www.maxlinear.com for additional information on Environmental Rating.
111
13
REVISION HISTORY
Date
Revision Description
5-26-05
Rev B
Original SP200/204/206/207/208/211/213 Sipex Data sheet
7-16-10
1.0.0
Change revision to 1.0.0 and convert to Exar format. Remove
EOL part numbers and associated verbiage. Update ordering
information.
June 2011
1.0.1
August 2020
.0.2
SP207CA-L and SP207EA-L options removed per PDN
110510-01
Update to MaxLinear logo. Update Ordering Information.
MaxLinear, Inc.
5966 La Place Court, Suite 100
Carlsbad, CA 92008
760.692.0711 p.
760.444.8598 f.
www.maxlinear.com
The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a
commitment by MaxLinear, Inc. MaxLinear, Inc. assumes no responsibility or liability for any errors or inaccuracies that may appear in the
informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights
under copyright, no part of this document may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by
any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of
MaxLinear, Inc.
Maxlinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized
for use in such applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been
minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances.
MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this
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any license to these patents, trademarks, copyrights, or other intellectual property.
MaxLinear, the MaxLinear logo, and any MaxLinear trademarks, MxL, Full-Spectrum Capture, FSC, G.now, AirPHY and the MaxLinear logo are all
on the products sold, are all trademarks of MaxLinear, Inc. or one of MaxLinear’s subsidiaries in the U.S.A. and other countries. All rights reserved.
Other company trademarks and product names appearing herein are the property of their respective owners.
© 2005 - 2020 MaxLinear, Inc. All rights reserved.
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14
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