AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
Selector Guide
General Description
The MAX200–MAX209/MAX211/MAX213 transceivers
are designed for RS-232 and V.28 communication inter-
faces where Q12V supplies are not available. On-board
charge pumps convert the +5V input to the Q10V needed
for RS-232 output levels. The MAX201 and MAX209
operate from +5V and +12V, respectively, and contain a
+12V to -12V charge-pump voltage converter.
The MAX200–MAX209/MAX211/MAX213 drivers and
receivers meet all EIA/TIA-232E and CCITT V.28 speci-
fications at a 20kbps data rate. The drivers maintain the
Q5V EIA/TIA-232E output signal levels at data rates in
excess of 120kbps when loaded in accordance with the
EIA/TIA-232E specification.
The 5FW shutdown mode of the MAX200, MAX205,
MAX206, and MAX211 conserves energy in battery-pow-
ered systems. The MAX213 has an active-low shutdown
and an active-high receiver enable control. Two receiv-
ers of the MAX213 are active, allowing the ring indicator
(RI) to be monitored easily using only 75FW power.
The MAX211 and MAX213 are available in a 28-pin, wide
small-outline (SO) package and a 28-pin shrink small-
outline (SSOP) package, which occupies only 40% of the
area of the SO. The MAX207 is now available in a 24-pin
SO package and a 24-pin SSOP. The MAX203 and
MAX205 use no external components and are recom-
mended for applications with limited circuit board space.
Next-Generation Device Features
S For Low-Cost Applications:
MAX221E: ±15kV ESD-Protected, +5V, 1µA,
Single RS-232 Transceiver with AutoShutdown™
S For Low-Voltage and Space-Constrained Applications:
MAX3222E/MAX3232E/MAX3237E/MAX3241E/
MAX3246E: ±15kV ESD-Protected, Down
to 10nA, +3.0V to +5.5V, Up to 1Mbps, True
RS-232 Transceivers (MAX3246E Available in
UCSP™ Package)
S For Space-Constrained Applications:
MAX3228E/MAX3229E: ±15kV ESD-Protected,
+2.5V to +5.5V, RS-232 Transceivers in UCSP
S For Low-Voltage or Data Cable Applications:
MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA,
2Tx/2Rx RS-232 Transceivers with ±15kV ESD-
Protected I/O and Logic Pins
S For Low-Power Applications:
MAX3224E–MAX3227E/MAX3244E/MAX3245E:
±15kV ESD-Protected, 1µA, 1Mbps,
+3.0V to +5.5V, RS-232 Transceivers with
AutoShutdown Plus™
Applications
Computers: Laptops, Palmtops, Notebooks
Battery-Powered Equipment
Handheld Equipment
AutoShutdown, AutoShutdown Plus, and UCSP are trademarks of Maxim Integrated Products, Inc.
Ordering Information appears at end of data sheet.
PART POWER-SUPPLY
VOLTAGE (V)
NUMBER
OF RS-232
DRIVERS
NUMBER
OF RS-232
RECEIVERS
NUMBER OF
RECEIVERS
ACTIVE IN
SHUTDOWN
NUMBER OF
EXTERNAL
CAPACITORS
(0.1µF)
LOW-POWER
SHUTDOWN/TTL
THREE-STATE
MAX200 +5 5 0 0 4 Yes/No
MAX201 +5 and +9.0 to +13.2 2 2 0 2 No/No
MAX202 +5 2 2 0 4 No/No
MAX203 +5 2 2 0 None No/No
MAX204 +5 4 0 0 4 No/No
MAX205 +5 5 5 0 None Yes/Yes
MAX206 +5 4 3 0 4 Yes/Yes
MAX207 +5 5 3 0 4 No/No
MAX208 +5 4 4 0 4 No/No
MAX209 +5 and +9.0 to +13.2 3 5 0 2 No/Yes
MAX211 +5 4 5 0 4 Yes/Yes
MAX213 +5 4 5 2 4 Yes/Yes
19-0065; Rev 7; 12/05
MAX200–MAX209/
MAX211/MAX213
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
VCC ..........................................................................-0.3V to +6V
V+ .............................................................. (VCC - 0.3V) to +14V
V- ...........................................................................+0.3V to -14V
Input Voltages
TIN ......................................................... -0.3V to (VCC + 0.3V)
RIN ................................................................................... Q30V
Output Voltages
TOUT .................................................(V+ + 0.3V) to (V- - 0.3V)
ROUT ..................................................... -0.3V to (VCC + 0.3V)
Short-Circuit Duration
TOUT .......................................................................Continuous
Continuous Power Dissipation (TA = +70NC)
14-Pin Plastic DIP (derate 10.00mW/NC above +70NC) ...800mW
16-Pin Plastic DIP (derate 10.53mW/NC above +70NC) ...842mW
16-Pin SO (derate 8.70mW/NC above +70NC) .............696mW
16-Pin Wide SO (derate 9.52mW/NC above +70NC) ....762mW
16-Pin CERDIP (derate 10.00mW/NC above +70NC) ...800mW
20-Pin Plastic DIP (derate 11.11mW/NC above +70NC) ...889mW
20-Pin Wide SO (derate 10.00mW/NC above +70NC) ..800mW
20-Pin CERDIP (derate 11.11mW/NC above +70NC) ...889mW
24-Pin Narrow Plastic DIP
(derate 13.33mW/NC above +70NC) .......................1067mW
24-Pin Wide Plastic DIP
(derate 9.09mW/NC above +70NC) ...........................727mW
24-Pin Wide SO (derate 11.76mW/NC above +70NC) ..941mW
24-Pin SSOP (derate 8.00mW/NC above +70NC) .........640mW
24-Pin CERDIP (derate 12.50mW/NC above +70NC) .1000mW
28-Pin Wide SO (derate 12.50mW/NC above +70NC) 1000mW
28-Pin SSOP (derate 9.52mW/NC above +70NC) .........762mW
Operating Temperature Ranges
MAX2_ _C_ _ ...................................................... 0NC to +70NC
MAX2_ _E_ _ ................................................... -40NC to +85NC
MAX2_ _ M_ _ ............................................... -55NC to +125NC
Storage Temperature Range ............................ -65NC to +160NC
Lead Temperature (soldering, 10s) (Note 1) ..................+300NC
Note 1: Maximum reflow temperature for the MAX203 and MAX205 is +225°C.
ELECTRICAL CHARACTERISTICS
(MAX202/MAX204/MAX206/MAX208/MAX211/MAX213: VCC = +5V Q10%; MAX200/MAX203/MAX205/MAX207: VCC = +5V Q5%,
C1–C4 = 0.1FF; MAX201/MAX209: VCC = +5V Q10%, V+ = +9.0V to +13.2V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output-Voltage Swing All transmitter outputs loaded with 3kI to ground Q5Q8V
VCC Power-Supply
Current No load, TA = +25NC
MAX202, MAX203 8 15
mA
MAX200, MAX204–MAX208, MAX211,
MAX213 11 20
MAX201, MAX209 0.4 1
V+ Power-Supply Current No load MAX201 5 10 mA
MAX209 7 15
Shutdown Supply Current Figure 1, TA = +25NCMAX200, MAX205, MAX206, MAX211 1 10 FA
MAX213 15 50
Input Logic Threshold
Low TIN, EN, SHDN, EN, SHDN 0.8 V
Input Logic Threshold
High
TIN 2.0 V
EN, SHDN, EN, SHDN 2.4
Logic Pullup Current TIN = 0V 15 200 FA
RS-232 Input-Voltage
Operating Range -30 +30 V
MAX200–MAX209/MAX211/MAX213
2
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
ELECTRICAL CHARACTERISTICS (continued)
(MAX202/MAX204/MAX206/MAX208/MAX211/MAX213: VCC = +5V Q10%; MAX200/MAX203/MAX205/MAX207: VCC = +5V Q5%,
C1–C4 = 0.1FF; MAX201/MAX209: VCC = +5V Q10%, V+ = +9.0V to +13.2V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Receiver Input Threshold
Low
VCC = +5V,
TA = +25NC
Active mode 0.8 1.2 V
Shutdown mode, MAX213, R4, R5 0.6 1.5
Receiver Input Threshold
High
VCC = +5V,
TA = +25NC
Active mode 1.7 2.4 V
Shutdown mode, MAX213, R4, R5 1.5 2.4
RS-232 Input Hysteresis VCC = +5V, no hysteresis in shutdown 0.2 0.5 1.0 V
RS-232 Input Resistance VCC = +5V, TA = +25NC3 5 7 kI
TTL/CMOS Output-
Voltage Low
IOUT = 3.2mA MAX201, MAX202, MAX203 0.4 V
IOUT = 1.6mA All others
TTL/CMOS Output-
Voltage High IOUT = 1.0mA 3.5 V
TTL/CMOS Output
Leakage Current EN = VCC, EN = 0V, 0 P ROUT P VCC 0.05 ±10 FA
Output Enable Time Figure 2 MAX205, MAX206, MAX209, MAX211,
MAX213 600 ns
Output Disable Time Figure 2 MAX205, MAX206, MAX209, MAX211,
MAX213 200 ns
Receiver Propagation
Delay
SHDN = 0V, R4, R5 MAX213 4 40
Fs
SHDN = VCC 0.5 10
MAX200–MAX211 0.5 10
Transmitter Output
Resistance VCC = V+ = V- = 0V, VOUT = Q2V 300 I
Transition Region Slew
Rate
CL = 50pF to 2500pF,
RL = 3kI to 7kI,
VCC = 5V, TA = +25NC
measured from +3V to
-3V or -3V to +3V
MAX200, MAX202–MAX211, MAX213 3 5.5 30
V/Fs
MAX201 4 30
RS-232 Output Short-
Circuit Current Q10 Q60 mA
Maximum Data Rate RL = 3kI to 7kI, CL = 50pF to 1000pF, one transmitter 120 kbps
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
3
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
Typical Operating Characteristics
SUPPLY CURRENT (mA)
15
20
25
30
35
10
MAX202/203
SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX200-MAX213 toc08
LOAD CAPACITANCE (pF)
400030001000 20000 5000
VCC = +4.5V, TA = +25NC,
BOTH Tx OUTPUTS, LOADED 3kIICL
ONE TRANSMITTER AT FULL DATA RATE
ONE TRANSMITTER AT 1/8 DATA RATE
240kbps
20kbps
120kbps
Tx SLEW RATE (V/Fs)
2
4
6
8
10
12
14
0
MAX202/203
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc07
LOAD CAPACITANCE (pF)
400030001000 20000 5000
VCC = +4.5V, TA = +25NC
BOTH Tx OUTPUTS, LOADED 3kIICL
ONE TRANSMITTER AT FULL DATA RATE
ONE TRANSMITTER AT 1/8 DATA RATE
-SLEW RATE
+SLEW RATE
240kbps
20kbps
120kbps
240kbps
20kbps
120kbps
MAX202/203
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc06
LOAD CAPACITANCE (pF)
400030001000 20000 5000
Tx OUTPUT VOLTAGE (V)
-5.0
-2.5
0
2.5
5.0
7.5
-7.0
20kbps
120kbps
120kbps
VCC = +4.5V, TA = +25NC
BOTH Tx OUTPUTS, LOADED 3kIICL
ONE TRANSMITTER AT FULL DATA RATE
ONE TRANSMITTER AT 1/8 DATA RATE
20kbps
240kbps
240kbps
Tx SLEW RATE (V/Fs)
5
10
15
20
25
0
LOAD CAPACITANCE (pF)
400030001000 20000 5000
MAX201/MAX209
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc05
-SLEW RATE
+SLEW RATE
MAX209
MAX201
VCC = +5V
ALL Tx OUTPUTS
LOADED 3kIIICL
TA = +25NC
V+ = 12V
MAX201
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc04
LOAD CAPACITANCE (pF)
400030001000 20000 5000
Tx OUTPUT VOLTAGE (IVI)
7.5
8.0
8.5
9.0
9.5
10.0
7.0
VCC = +5V
ALL Tx OUTPUTS
LOADED 3kIIICL
TA = +25NC
V+ = 12V
20kbps
60kbps
112kbps
LOAD CAPACITANCE (pF)
400030001000 20000 5000
MAX209
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc03
Tx OUTPUT VOLTAGE (IVI)
8.6
8.8
9.0
9.2
9.4
9.6
9.8
10.0
8.4
VCC = +5V
ALL Tx OUTPUTS
LOADED 3kIIICL
TA = +25NC
V+ = 12V
20kbps
60kbps
116kbps
MAX200/204/205/206/207/208/211/213
TRANSMITTER SKEW RATE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc02
LOAD CAPACITANCE (pF)
Tx SLEW RATE (V/Fs)
400030001000 2000
4
6
8
10
12
14
16
18
20
22
2
0 5000
-SLEW RATE
+SLEW RATE
VCC = +5V
ALL Tx OUTPUTS
LOADED 3kIIICL
TA = +25NC
MAX200/204/205/206/207/208/211/213
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX200-MAX213 toc01
LOAD CAPACITANCE (pF)
Tx OUTPUT VOLTAGE (IVI)
400030001000 2000
5.2
5.4
5.6
5.8
6.0
6.2
6.4
6.6
6.8
7.0
5.0
0 5000
20kbps
116kbps
60kbps
VCC = +5V
ALL Tx OUTPUTS
LOADED 3kIIICL
TA = +25NC
MAX200–MAX209/MAX211/MAX213
4
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
Detailed Description
The MAX200–MAX209/MAX211/MAX213 consist of
three sections: charge-pump voltage converters, drivers
(transmitters), and receivers. Each section is described
in detail.
+5V to
±
10V Dual Charge-Pump
Voltage Converter
The +5V to Q10V conversion is performed by two
charge-pump voltage converters (Figure 4). The first
uses capacitor C1 to double +5V to +10V, storing +10V
on the V+ output filter capacitor, C3. The second charge-
pump voltage converter uses capacitor C2 to invert +10V
to -10V, storing -10V on the V- output filter capacitor, C4.
The MAX201 and MAX209 include only the V+ to V-
charge pump, and are intended for applications that
have a VCC = +5V supply and a V+ supply in the +9V to
+13.2V range.
In shutdown mode, V+ is internally connected to VCC by
a 1kI pulldown resistor and V- is internally connected to
ground by a 1kI pullup resistor.
RS-232 Drivers
When VCC = +5V, the typical driver output-voltage swing
is Q8V when loaded with a nominal 5kI RS-232 receiver.
The output swing is guaranteed to meet the EIA/TIA-232E
and V.28 specifications, which call for Q5V minimum out-
put levels under worst-case conditions. These include
a minimum 3kI load, VCC = +4.5V, and the maximum
operating temperature. The open-circuit output-voltage
swing ranges from (V+ - 0.6V) to V-.
Input thresholds are both CMOS and TTL compatible.
The inputs of unused drivers can be left unconnected
since 400kI pullup resistors to VCC are included on-
chip. Since all drivers invert, the pullup resistors force
the outputs of unused drivers low. The input pullup resis-
tors typically source 15µA; therefore, the driver inputs
should be driven high or open circuited to minimize
power-supply current in shutdown mode.
When in low-power shutdown mode, the driver outputs
are turned off and their leakage current is less than 1mA,
even if the transmitter output is backdriven between 0V
and (VCC + 6V). Below -0.5V, the transmitter output is
diode clamped to ground with a 1kI series impedance.
The transmitter output is also zener clamped to approxi-
mately (VCC + 6V), with a 1kI series impedance.
Figure 1. Shutdown Current Test Circuit
Figure 2. Receiver Output Enable and Disable Timing
ISHDN
+5.5V
+5.5V
+5.5V (0)
+5.5V
0V OR +5.5V
DRIVE
0.1FF
0.1FF
0.1FF
0.1FF
C1+
C1-
C2+
C2-
400kI
3kI
5kI
GND
VCC V+
V-
TIN
+5.5V
T1 T0 T5
R1 T0 R5
TOUT
RIN
0.1FF
SHDN
ROUT
(SHDN)
EN (EN)
MAX200
MAX205
MAX206
MAX211
MAX213
NOTE 1: ( ) ARE FOR MAX213.
NOTE 2: CAPACITORS CAN BE POLARIZED OR UNPOLARIZED.
+3.5V
RECEIVER
OUTPUT
CL = 150pF
+0.8V
VOH - 0.1V
+ 2.5V
VOH
VOL RL = 1kI
VOL + 0.1V
OUTPUT ENABLE TIME
RECEIVER
OUTPUTS
+3V
0V
EN
INPUT
OUTPUT ENABLE TIME
+3V
0V
EN
INPUT
NOTE: POLARITY OF EN IS REVERSED FOR THE MAX213.
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
5
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
RS-232 Receivers
The receivers convert RS-232 signals to CMOS logic
output levels. Receiver outputs are inverting, maintain-
ing compatibility with driver outputs. The guaranteed
receiver input thresholds of +0.8V and +2.4V are signifi-
cantly tighter than the Q3.0V threshold required by the
EIA/TIA-232E specification. This allows receiver inputs
to respond to TTL/CMOS logic levels and improves noise
margin for RS-232 levels.
The MAX200–MAX209/MAX211/MAX213 guaranteed
+0.8V threshold (+0.6V in shutdown for the MAX213)
ensures that receivers shorted to ground have a logic 1
output. Also, the 5kI input resistance to ground ensures
that a receiver with its input left open also has a logic 1
output.
Receiver inputs have approximately +0.5V hysteresis.
This provides clean output transitions, even with slow
rise and fall time input signals with moderate amounts of
noise and ringing. In shutdown, the MAX213 receivers
R4 and R5 have no hysteresis.
Figure 3. Transition Slew-Rate Test Circuit
Figure 4. Dual Charge-Pump Diagram
+5V
0V (+5V)
0V (+5V)
0.1FF
0.1FF
0.1FF
C1+
C1-
C2+
C2-
400kI
3kI
2500pF
5kI
VCC V+
V-
TIN
+5V
T1 T0 T5
R1 T0 R5
TOUT
RIN
0.1FF
ROUT
SHDN (SHDN)
EN (EN)
MAX200-MAX209
MAX211
MAX213
+5V
0V (+5V)
MAXIMUM SLEW-RATE
TEST CIRCUIT
MINIMUM SLEW-RATE
TEST CIRCUIT
NOTE: ( ) ARE FOR MAX213.
0V (+5V)
0.1FF
0.1FF
0.1FF
C1+
C1-
C2+
C2-
400kI
7kI
50pF
5kI
VCC V+
V-
TIN
+5V
T1 T0 T5
R1 T0 R5
TOUT
RIN
0.1FF
ROUT
SHDN (SHDN)
EN (EN)
MAX200-MAX209
MAX211
MAX213
0.1FF 0.1FF
V+ V+ S5S1 S2C1+ S6C2+
IL+
C3 C2
C4
GND
RL-
V-
S7 S8
GND
VCC
IL-
RL+
C2-
C1
VCC
200kHz
S3 S4
C1-
GND
MAX200–MAX209/MAX211/MAX213
6
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
Shutdown and Enable Control
In shutdown mode, the MAX200/MAX205/MAX206/
MAX211/MAX213 charge pumps are turned off, V+ is
pulled down to VCC, V- is pulled to ground, and the
transmitter outputs are disabled. This reduces supply
current typically to 1µA (15µA for the MAX213). The time
required to exit shutdown is 1ms, as shown in Figure 5.
All receivers except R4 and R5 on the MAX213 are put
into a high-impedance state in shutdown mode. The
MAX213’s R4 and R5 receivers still function in shutdown
mode. These two receivers are useful for monitoring
external activity while maintaining minimal power con-
sumption.
The enable control is used to put the receiver outputs
into a high-impedance state, so that the receivers can be
connected directly to a three-state bus. It has no effect
on the RS-232 drivers or on the charge pumps.
MAX213 Receiver Operation in Shutdown
During normal operation, the MAX213’s receiver propa-
gation delay is typically 1Fs. When entering shutdown
with receivers active, R4 and R5 are not valid until 80Fs
after SHDN is driven low. In shutdown mode, propaga-
tion delays increase to 4Fs for a high-to-low or a low-to-
high transition.
When exiting shutdown, all receiver outputs are invalid
until the charge pumps reach nominal values (< 2ms
when using 0.1FF capacitors).
Figure 5. Transmitter Outputs When Exiting Shutdown
Table 1a. MAX200 Control Pin Configurations
Table 1b. MAX205/MAX206/MAX211 Control Pin Configurations
Table 1c. MAX213 Control Pin Configurations
*Active = active with reduced performance.
TWO TRANSMITTER
OUTPUTS:
ONE HIGH, ONE LOW
SHDN*
THREE TRANSMITTERS LOADED WITH 3kI||2500pF.
*SHUTDOWN POLARITY REVERSED FOR MAX213.
SHUTDOWN TRANSMITTERS ON
SHDN OPERATION STATUS TRANSMITTERS T1–T5
0 Normal Operation All Active
1 Shutdown All High-Z
SHDN EN OPERATION STATUS TRANSMITTERS T1–T5 RECEIVERS R1–R5
0 0 Normal Operation All Active All Active
0 1 Normal Operation All Active All High-Z
1 0 Shutdown All High-Z All High-Z
SHDN EN OPERATION STATUS TRANSMITTERS T1–T4 RECEIVERS
R1, R2, R3 R4, R5
0 0 Shutdown All High-Z High-Z High-Z
0 1 Shutdown All High-Z High-Z Active*
1 0 Normal Operation All Active High-Z High-Z
1 1 Normal Operation All Active Active Active
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
7
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
Applications Information
Capacitor Selection
The type of capacitor used is not critical for proper
operation. Ceramic capacitors are suggested. To ensure
proper RS-232 signal levels over temperature when
using 0.1FF capacitors, make sure the capacitance
value does not degrade excessively as the temperature
varies. If in doubt, use capacitors with a larger nominal
value. Also observe the capacitors’ ESR value over tem-
perature, since it influences the amount of ripple on V+
and V-. To reduce the output impedance at V+ and V-,
use larger capacitors (up to 10FF). If polarized capaci-
tors are used, obey the polarities shown in Figure 1 and
the pin configurations.
Driving Multiple Receivers
Each transmitter is designed to drive a single receiver.
Transmitters can be paralleled to drive multiple receivers.
Driver Outputs When Exiting Shutdown
Figure 5 shows two driver outputs exiting shutdown. As
they become active, the two driver outputs go to oppo-
site RS-232 levels (one driver input is high, the other
is low). Each driver is loaded with 3kI in parallel with
2500pF. The driver outputs display no ringing or undesir-
able transients as they come out of shutdown.
Power-Supply Decoupling
In applications that are sensitive to power-supply noise,
decouple VCC to ground with a capacitor of the same
value as the charge-pump capacitors.
V+ and V- as Power Supplies
A small amount of power can be drawn from V+ and V-,
although this reduces noise margins.
Power Supplies for MAX201/MAX209
If at power-up the V+ supply rises after the VCC supply,
place a diode (e.g., 1N914) in series with the V+ supply.
Table 3. DB9 Cable Connections Commonly Used for EIA/TIA-232E and V.24
Asynchronous Interfaces
Table 2. Summary of EIA/TIA-232E, V.28 Specifications
PARAMETER CONDITION EIA/TIA-232E, V.28 SPECIFICATION
Driver Output Voltage: 0 Level 3kI to 7kI load +5.0V to +15V
Driver Output Voltage: 1 Level 3kI to 7kI load -5.0V to -15V
Output Level, Maximum No load Q25V
Data Rate 3kI P RL P 7kI, CL P 2500pF Up to 20kbps
Receiver Input Voltage: 0 Level +3.0V to +15V
Receiver Input Voltage: 1 Level -3.0V to -15V
Input Level, Maximum Q25V
Instantaneous Slew Rate, Maximum 3kI P RL P 7kI, CL P 2500pF 30V/Fs
Driver Output Short-Circuit Current, Maximum 100mA
Transition Rate on Driver Output V.28 1ms or 3% of the period
EIA/TIA-232E 4% of the period
Driver Output Resistance -2V < VOUT < +2V 300I
PIN NAME CONNECTION
1 Received Line Signal Detector, sometimes called Carrier Detect (DCD) Handshake from DCE
2 Receive Data (RD) Data from DCE
3 Transmit Data (TD) Data from DTE
4 Data Terminal Ready Handshake from DTE
5 Signal Ground Reference point for signals
6 Data Set Ready (DSR) Handshake from DCE
7 Request to Send (RTS) Handshake from DTE
8 Clear to Send (CTS) Handshake from DCE
9 Ring Indicator Handshake from DCE
MAX200–MAX209/MAX211/MAX213
8
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX200 Pin Configuration/Typical Operating Circuit
DIP/SO
20
19
18
17
16
15
14
1
2
3
4
5
6
7
T4OUT
+5V INPUT
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
GND
C1+
C1-
C2+
C2-
0.1FF
7
9
8
0.1FF
+6.3V
0.1FF
+16V 0.1FF
+16V
0.1FF
+6.3V
V+
V-
10
11
12
18
N.C. SHDN
TTL/CMOS
INPUTS
RS-232
OUTPUTS
17
6
13
T5IN
N.C.
SHNDT2IN
T2OUT
T1OUT
T3OUT
MAX200
MAX200
T5OUT
T4IN
T3IN
VCC
GND
138 V-C1+
129 C2-V+
1110 C2+C1-
T1IN
T1OUT
+5V
T1IN
400kI
5 2
T1
T2OUT
+5V
400kI
T2IN4 3
T2
T3OUT
+5V
400kI
T3IN14 1
T3
T4OUT
+5V
400kI
T4IN
15 20
T4
T5OUT
+5V
400kI
T5IN19 16
T5
VCC
TOP VIEW
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
9
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX201 Pin Configurations/Typical Operating Circuit
+5V INPUT +9V TO +12V
+12V TO -12V
VOLTAGE CONVERTER
GND
C+
C-
13 (15)
14 (16)
1
0.1FF
+16V
C2
0.1FF
+16V
V+
V-
T1OUT
R2IN
T2OUT
2
+5V
+5V
5kI
5kI
T1IN
400kI
400kI
T2IN
R2OUT
(10) 8
7
6
R1OUT
(11) 9
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
12 (14)
5
R1IN 10 (12)
4
11 (13)
3
T1
T2
R1
R2
14
13
12
11
10
9
8
1
2
3
4
5
6
7
V+
VCC
GND
T1OUT
T2OUT
V-
C-
C+
MAX201
MAX201
R1IN
R1OUT
T1IN
T2IN
R2OUT
R2IN
DIP
16
15
14
13
12
11
9
1
2
3
4
5
6
8
V+
VCC
GND
T1OUT
T2OUT
V-
C-
C+
MAX201
R1IN
R1OUT
N.C.N.C.
R2OUT
10
7T1IN
T2IN
R2IN
SO
VCC
TOP VIEW
0.1FF
NOTE: PIN NUMBERS IN ( ) ARE FOR SO PACKAGE
MAX200–MAX209/MAX211/MAX213
10
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX202 Pin Configuration/Typical Operating Circuit
TOP VIEW
+5V INPUT
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
GND
C1+
C1-
0.1FF
0.1FF
+6.3V
16
2
1
0.1FF
+6.3V
0.1FF
+16V
+10V
-10V
V+
V-
T1OUT
R2IN
T2OUT
3
+5V
+5V
5kI
5kI
T1IN
400kI
400kI
T2IN
R2OUT
11
10
9
R1OUT12
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
15
8
R1IN 13
7
14
6
C2+
C2-
4
0.1FF
+16V 5
T1
T2
R1
R2
16
15
14
13
12
11
9
1
2
3
4
5
6
8
VCC
GND
T1OUT
C2+ R1IN
C1-
V+
C1+
MAX202
R1OUT
T1IN
R2OUT
R2IN
V-
10
7T2IN
T2OUT
C2-
DIP/SO/WIDE SO
VCC
MAX202
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX203 Pin Configurations/Typical Operating Circuit
TOP VIEW
+5V INPUT
GND GND
T1OUT
R2IN
T2OUT
+5V
+5V
5kI
5kI
T1IN
400kI
400kI
T2IN
R2OUT
C1+ C2+
C2+
C2-
C2-
6 9
7
C1-
V-
V-
V+
2
1
20
8 (13)
DO NOT MAKE
CONNECTION TO
THESE PINS
INTERNAL -10V
POWER SUPPLY
INTERNAL +10V
POWER SUPPLY
13 (14)
12 (10)
14 (8)
17
R1OUT
3
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
19
11 (12)
15
16
10 (11)
R1IN 4
18
5
T1
T2
R1
R2
VCC
DIP
20
19
18
17
16
15
14
1
2
3
4
5
6
7
R2OUT
R2IN
T2OUT
V-R1IN
R1OUT
T1IN
T2IN
MAX203
MAX203
C2-
C2+
V+VCC
GND
138 C1-C1+
129 V-GND
1110 C2+C2-
T1OUT
SO
20
19
18
17
16
15
14
1
2
3
4
5
6
7
R2OUT
R2IN
T2OUT
V-R1IN
R1OUT
T1IN
T2IN
MAX203
C2-
C2+
C1-VCC
GND
138 C1+V+
129 C2+GND
1110 C2-V-
T1OUT
0.1FF
NOTE: PIN NUMBERS IN ( ) ARE FOR SO PACKAGE.
MAX200–MAX209/MAX211/MAX213
12
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX204 Pin Configuration/Typical Operating Circuit
+5V INPUT
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
GND
C1+
C1-
C2+
C2-
6
8
7
0.1FF
+6.3V
0.1FF
+16V 0.1FF
+16V
0.1FF
+6.3V
V+
V-
T1OUT
T3OUT
T4OUT
T2OUT
9
10
+5V
+5V
+5V
+5V
T1IN
400kI
400kI
400kI
400kI
T2IN
T3IN
T4IN
11
4
3
13
14
TTL/CMOS
INPUTS
RS-232
OUTPUTS
5
15
16
2
1
12
0.1FF
T1
T2
T3
T4
VCC
TOP VIEW
16
15
14
13
12
11
9
1
2
3
4
5
6
8
T3OUT
T4OUT
T4IN
T1IN T3IN
T2IN
T2OUT
T1OUT
V-
C2-
C1-
V+
VCC
10
7C2+
C1+
GND
DIP/SO
MAX204
MAX204
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX205 Pin Configuration/Typical Operating Circuit
+5V INPUT
GND
12
T1OUT
T3OUT
T4OUT
T2OUT
+5V
+5V
+5V
+5V
T1IN
400kI
400kI
400kI
400kI
T2IN
T3IN
T4IN
T5IN
8
7
15
16
TTL/CMOS
INPUTS
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
RS-232
INPUTS
11
1
2
4
3
T1
T2
T3
T4
T5OUT
+5V
400kI
R1OUT R1IN
R2IN
R3IN
R4IN
R5IN
SHDN
R2OUT
R3OUT
R4OUT
R5OUT
EN
22
9
6
23
17
14
20 21
10
5
24
18
13
19
T5
R1
R2
R3
R4
R5
VCC
TOP VIEW
24
23
22
21
20
19
17
1
2
3
4
5
6
8
R3IN
R3OUT
T5IN
SHDN
T2OUT
T1OUT
T3OUT
T4OUT
EN
T5OUT
R4OUT
T1IN
R2OUT
18
7R4IN
T2IN
15
10 T3IN
R1IN
16
9T4IN
R1OUT
13
12 R5IN
VCC
14
11 R5OUT
GND
R2IN
DIP
5kI
5kI
5kI
5kI
5kI
MAX205
MAX205
0.1FF
MAX200–MAX209/MAX211/MAX213
14
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX206 Pin Configuration/Typical Operating Circuit
+5V INPUT
+5V
T1IN T1OUT 2
400kI
+5V
T2IN T2OUT 3
400kI
+5V
T3IN T3OUT 1
400kI
+5V
T4IN T4OUT 24
400kI
8
19
18
6
7
14
13
12
10
V-
V+
C2+
C2-
C1-
C1+ 11
9
15
0.1FF
+16V
0.1FF
+6.3V
0.1FF
0.1FF
+16V
RS-232
INPUTS
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
GND
T4
T3
T1
T2
0.1FF
+6.3V
VCC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
TTL/CMOS
INPUTS
24
23
22
21
20
19
18
1
2
3
4
5
6
7
T4OUT
R2IN
R2OUT
SHDNR1IN
R1OUT
T2OUT
T1OUT
T3OUT
TOP VIEW
MAX206
MAX206
EN
T4IN
T3IN
VCC
GND 178 R3OUT
169 R3IN
1510 V-C1+
1411 C2-V+
1312 C2+C1-
T2IN
T1IN
DIP/SO
5kI
R1OUT R1IN 4
R1
5
5kI
R2OUT R2IN 23
R2
22
5kI
R3OUT R3IN
SHDN
16
21
R3
17
20 EN
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX207 Pin Configuration/Typical Operating Circuit
+5V
T1IN T1OUT 2
400kI
+5V
T2IN T2OUT 3
400kI
+5V
T3IN T3OUT 1
400kI
+5V
T4IN T4OUT 24
400kI
+5V
T5IN T5OUT 20
8
400kI
19
18
6
7
14
13
12
10
C2-
V-
V+
C1-
C1+
C2+
11
9
15
0.1FF
+16V
0.1FF
+6.3V
0.1FF
0.1FF
+16V
RS-232
INPUTS
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
GND
T5
T4
T3
T1
T2
0.1FF
+6.3V
+5V INPUT
V
CC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
21
TTL/CMOS
INPUTS
24
23
22
21
20
19
18
1
2
3
4
5
6
7
T4OUT
R2IN
R2OUT
T5IN
R1IN
R1OUT
T2OUT
T1OUT
T3OUT
TOP VIEW
MAX207
MAX207
T5OUT
T4IN
T3IN
VCC
GND 178 R3OUT
169 R3IN
1510 V-C1+
1411 C2-V+
1312 C2+C1-
T2IN
T1IN
DIP/SO/SSOP
5kI
R1OUT R1IN 4
R1
5
5kI
R2OUT R2IN 23
R2
22
5kI
R3OUT R3IN 16
R3
17
MAX200–MAX209/MAX211/MAX213
16
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX208 Pin Configuration/Typical Operating Circuit
+5V
T1IN T1OUT 2
400kI
+5V
T2IN T2OUT 1
400kI
+5V
T3IN T3OUT 24
400kI
8
C2-
C2+
C1-
C1+ V+
V-
11
9
15
0.1FF
+16V
0.1FF
+6.3V
0.1FF
0.1FF
+16V
RS-232
INPUTS
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
GND
T3
+5V
T4IN T4OUT 20
400kI
T4
T1
T2
0.1FF
+6.3V
+5V INPUT
V
CC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
TTL/CMOS
INPUTS
24
23
22
21
20
19
18
1
2
3
4
5
6
7
T3OUT
R3IN
R3OUT
T4IN
R2OUT
T1IN
R2IN
T1OUT
T2OUT
TOP VIEW
MAX208
MAX208
T4OUT
T3IN
T2IN
VCC
GND 178 R4OUT
169 R4IN
1510 V-C1+
1411 C2-V+
1312 C2+C1-
R1OUT
R1IN
DIP/SO
5kI
R2OUT R2IN 3
R2
5kI
R1OUT R1IN 7
R1
5kI
R3OUT R3IN 23
R3
5kI
R4OUT R4IN 16
R4
19
18
5
14
13
12
10
21
6
4
22
17
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX209 Pin Configuration/Typical Operating Circuit
0.1FF
+5V INPUT
+5V
T1IN T1OUT 19
400kI
+5V
T2IN T2OUT 20
400kI
+5V
T3IN T3OUT 13
400kI
3
16
23
24
7
6
C-
C+
4 5
8
0.1FF
+16V 0.1FF
+16V
RS-232
INPUTS
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
GND
T3
T1
T2
9V - 13.2V
INPUT
V
CC
V+
+10V TO +10V
VOLTAGE INVERTER
TTL/CMOS
INPUTS
24
23
22
21
20
19
18
1
2
3
4
5
6
7
T1IN
T2IN
R2OUT
R2IN
VCC
V+
GND
R1IN
R1OUT
TOP VIEW
MAX209
MAX209
T2OUT
T1OUT
R3IN
R5IN
V- 178 R3OUT
169 T3IN
1510 N.C.R5OUT
1411 ENR4OUT
1312 T3OUT
R4IN
C+
C-
DIP/SO
5kI
R2OUT R2IN 21
R2
22
1
5kI
R1OUT R1IN 2
R1
5kI
R3OUT R3IN 18
R3
17
5kI
R4OUT R4IN
N.C.
12
15
R4
11
5kI
R5OUT R5IN 9
R5
10
14 EN
MAX200–MAX209/MAX211/MAX213
18
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX211 Pin Configuration/Typical Operating Circuit
GND
T1OUT
T3OUT
T4OUT
T2OUT
+5V
+5V
+5V
+5V
T1IN
T2IN
T3IN
T4IN
7
6
20
21
TTL/CMOS
INPUTS RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
RS-232
INPUTS
10
28
1
3
2
T1
T2
T3
T4
R1OUT R1IN
R2IN
R3IN
R4IN
R5IN
SHDN
R2OUT
R3OUT
R4OUT
R5OUT
EN
8
5
26
22
19
24 25
9
4
27
23
18
R1
R2
R3
R4
R5
TOP VIEW
5kI
5kI
5kI
5kI
5kI
28
27
26
25
24
23
21
1
2
3
4
5
6
8
T4OUT
R3IN
R3OUT
SHDN
R2IN
T2OUT
T1OUT
T3OUT
R4IN
T4IN
R1OUT
T2IN
22
7R4OUT
T1IN
19
10 R5OUT
GND
20
9T3IN
R1IN
17
12 V-
C1+
18
11 R5IN
VCC
15
14 C2+
C1-
16
13 C2-
V+
R2OUT
SO/SSOP
+5V INPUT
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
C1+
C1-
C2+
C2-
11
13
12
0.1FF
+6.3V
0.1FF
+16V 0.1FF
+16V
0.1FF
+6.3V
V+
V-
14
15
16
17
VCC
EN
400kI
400kI
400kI
400kI
0.1FF
MAX211
MAX211
MAX200–MAX209/MAX211/MAX213
Maxim Integrated
+5V, RS-232 Transceivers
with 0.1µF External Capacitors
MAX213 Pin Configuration/Typical Operating Circuit
TOP VIEW
28
27
26
25
24
23
21
1
2
3
4
5
6
8
T4OUT
R3IN
R3OUT
SHDN
R2IN
T2OUT
T1OUT
T3OUT
MAX213 R4IN*
T4IN
R1OUT
T2IN
22
7R4OUT*
T1IN
19
10 R5OUT*
GND
20
9T3IN
R1IN
17
12 V-
C1+
18
11 R5IN*
VCC
15
14 C2+
C1-
16
13 C2-
V+
R2OUT
SO/SSOP
EN
GND
T1OUT
T3OUT
T4OUT
T2OUT
+5V
+5V
+5V
+5V
T1IN
T2IN
T3IN
T4IN
7
6
20
21
TTL/CMOS
INPUTS
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
RS-232
INPUTS
10
28
1
3
2
T1
T2
T3
T4
R1OUT R1IN
R2IN
R3IN
R4IN*
R5IN*
SHDN
R2OUT
R3OUT
R4OUT*
R5OUT*
EN
8
5
26
22
19
24 25
9
4
27
23
18