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.
General Description
The MAX202E–MAX213E, MAX232E/MAX241E line
drivers/receivers are designed for RS-232 and V.28
communications in harsh environments. Each transmitter
output and receiver input is protected against ±15kV
electrostatic discharge (ESD) shocks, without latchup.
The various combinations of features are outlined in the
Selector Guide.
The drivers and receivers for all ten
devices meet all EIA/TIA-232E and CCITT V.28
specifications at data rates up to 120kbps, when loaded
in accordance with the EIA/TIA-232E specification.
The MAX211E/MAX213E/MAX241E are available in 28-
pin SO packages, as well as a 28-pin SSOP that uses
60% less board space. The MAX202E/MAX232E come
in 16-pin TSSOP, narrow SO, wide SO, and DIP
packages. The MAX203E comes in a 20-pin DIP/SO
package, and needs no external charge-pump
capacitors. The MAX205E comes in a 24-pin wide DIP
package, and also eliminates external charge-pump
capacitors. The MAX206E/MAX207E/MAX208E come in
24-pin SO, SSOP, and narrow DIP packages. The
MAX232E/MAX241E operate with four 1µF capacitors,
while the MAX202E/MAX206E/MAX207E/MAX208E/
MAX211E/MAX213E operate with four 0.1µF capacitors,
further reducing cost and board space.
________________________Applications
Notebook, Subnotebook, and Palmtop Computers
Battery-Powered Equipment
Hand-Held Equipment
Next-Generation Device Features
♦♦For Low-Voltage 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 a UCSP™
Package)
♦♦For Low-Power Applications
MAX3221/MAX3223/MAX3243: 1µA Supply
Current, True +3V to +5.5V RS-232 Transceivers
with Auto-Shutdown™
♦♦For Space-Constrained Applications
MAX3233E/MAX3235E: ±15kV ESD-Protected,
1µA, 250kbps, +3.0V/+5.5V, Dual RS-232
Transceivers with Internal Capacitors
♦♦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
±15kV ESD-Protected, +5V RS-232 Transceivers
Selector Guide
Pin Configurations and Typical Operating Circuits appear at
end of data sheet.
Yes
PART NO. OF RS-232
DRIVERS
NO. OF RS-232
RECEIVERS
RECEIVERS
ACTIVE IN
SHUTDOWN
NO. OF
EXTERNAL
CAPACITORS
(µF)
LOW-POWER
SHUTDOWN
TTL TRI-
STATE
MAX202E 2 2 0 4 (0.1) No No
MAX203E 2 2 0 None No No
MAX205E 5 5 0 None Yes Yes
MAX206E 4 3 0 4 (0.1) Yes Yes
MAX207E 5 3 0 4 (0.1) No No
MAX208E 4 4 0 4 (0.1) No No
MAX211E 4 5 0 4 (0.1) Yes Yes
MAX213E 4 5 2 4 (0.1) Yes Yes
MAX232E 2 2 0 4 (1) No No
MAX241E 4 5 0 4 (1) Yes
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
Ordering Information
16 Narrow SO0°C to +70°CMAX202ECSE
0°C to +70°C
MAX202ECPE
PIN-PACKAGETEMP RANGEPART
16 Plastic DIP
Ordering Information continued at end of data sheet.
Selector Guide
19-0175; Rev 6; 3/05
Pin Configurations and Typical Operating Circuits appear at
end of data sheet.
Yes
MAX202E–MAX213E,
MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
ABSOLUTE MAXIMUM RATINGS
VCC..........................................................................-0.3V to +6V
V+ ................................................................(VCC - 0.3V) to +14V
V- ............................................................................-14V to +0.3V
Input Voltages
T_IN ............................................................-0.3V to (V+ + 0.3V)
R_IN ...................................................................................±30V
Output Voltages
T_OUT.................................................(V- - 0.3V) to (V+ + 0.3V)
R_OUT......................................................-0.3V to (VCC + 0.3V)
Short-Circuit Duration, T_OUT....................................Continuous
Continuous Power Dissipation (TA= +70°C)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) .....696mW
16-Pin Wide SO (derate 9.52mW/°C above +70°C) ......762mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ...........755mW
20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)...889mW
20-Pin SO (derate 10.00mW/°C above +70°C).............800mW
24-Pin Narrow Plastic DIP
(derate 13.33mW/°C above +70°C) ...............................1.07W
24-Pin Wide Plastic DIP
(derate 14.29mW/°C above +70°C)................................1.14W
24-Pin SO (derate 11.76mW/°C above +70°C).............941mW
24-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW
28-Pin SO (derate 12.50mW/°C above +70°C)....................1W
28-Pin SSOP (derate 9.52mW/°C above +70°C) ..........762mW
Operating Temperature Ranges
MAX2_ _EC_ _ .....................................................0°C to +70°C
MAX2_ _EE_ _...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(VCC = +5V ±10% for MAX202E/206E/208E/211E/213E/232E/241E; VCC = +5V ±5% for MAX203E/205E/207E; C1–C4 = 0.1µF for
MAX202E/206E/207E/208E/211E/213E; C1–C4 = 1µF for MAX232E/241E; TA= TMIN to TMAX; unless otherwise noted. Typical values
are at TA= +25°C.)
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.
R_OUT; IOUT = -1.0mA V3.5 VCC - 0.4Output-Voltage High VOH
EN = VCC, EN = 0V, 0V ≤ ROUT ≤ VCC,
MAX205E–208E/211E/213E/241E outputs disabled µA±0.05 ±10Output Leakage Current
R_OUT; IOUT = 3.2mA (MAX202E/203E/232E) or
IOUT = 1.6mA (MAX205E/208E/211E/213E/241E) V0.4Output-Voltage Low VOL
T_IN; EN, SHDN (MAX213E) or
EN, SHDN (MAX205E–208E/211E/241E) V0.8Input Threshold Low VIL
815
T_IN = 0V (MAX205E–208E/211E/213E/241E) µA15 200Input Pullup Current
PARAMETER CONDITIONSSYMBOL UNITSMIN TYP MAX
VCC Supply Current ICC mA
11 20
No load, TA= +25°C 14 20
510
MAX211E/213E
MAX232E
715MAX241E
MAX205E–208E
EN, SHDN (MAX213E) or EN, SHDN
(MAX205E–208E/211E/241E) 2.4
T_IN
V
2.0
Input Threshold High VIH
MAX205E/206E 110
110MAX211E/241E
T_IN = 0V to VCC (MAX202E/203E/232E) µA±10Input Leakage Current
MAX202E/203E
15 50MAX213E
DC CHARACTERISTICS
LOGIC
Shutdown Supply Current TA= +25°C, Figure 1 µA
2
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±10% for MAX202E/206E/208E/211E/213E/232E/241E; VCC = +5V ±5% for MAX203E/205E/207E; C1–C4 = 0.1µF for
MAX202E/206E/207E/208E/211E/213E; C1–C4 = 1µF for MAX232E/241E; TA= TMIN to TMAX; unless otherwise noted. Typical values
are at TA= +25°C.)
Note 1: MAX211EE_ _ and MAX213EE_ _ tested with VCC = +5V ±5%.
MAX205E/206E/211E/213E/241E normal
operation, Figure 2
MAX205E/206E/211E/213E/241E normal
operation, Figure 2
CL= 150pF
RL= 3kΩto 7kΩ, CL= 50pF to 1000pF,
one transmitter switching
All drivers loaded with 3kΩto ground (Note 1)
TA= +25°C, VCC = 5V
VCC = 5V, no hysteresis in shutdown
TA= +25°C,
VCC = 5V
TA= +25°C,
VCC = 5V
VCC = V+ = V- = 0V, VOUT = ±2V
CONDITIONS
ns200Receiver Output Disable Time
ns600Receiver Output Enable Time
µs
440
tPLHR,
tPHLR
Receiver Propagation Delay
0.5 10
kbps120Maximum Data Rate
mA±10 ±60Output Short-Circuit Current
Ω300Output Resistance
V-30 30Input Voltage Range
V±5 ±9Output Voltage Swing
kΩ357Input Resistance
V0.2 0.5 1.0Input Hysteresis
VInput Threshold Low
1.7 2.4
V
1.5 2.4
Input Threshold High
UNITSMIN TYP MAXSYMBOLPARAMETER
All parts, normal operation
All parts, normal operation
MAX213E (R4, R5),
SHDN = 0V, EN = VCC
RL= 3kΩ, CL= 2500pF, all transmitters loaded µs2
tPLHT,
tPHLT
Transmitter Propagation Delay
TA= +25°C, VCC = 5V, RL= 3kΩto 7kΩ,
CL= 50pF to 1000pF, measured from -3V to
+3V or +3V to -3V, Figure 3
V/µs3630Transition-Region Slew Rate
Human Body Model ±15
IEC1000-4-2, Air-Gap Discharge
kV
±15
ESD-Protection Voltage IEC1000-4-2, Contact Discharge ±8
All parts, normal operation
MAX213E (R4, R5),
SHDN = 0V, EN = VCC
0.8 1.2
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
TIMING CHARACTERISTICS
EIA/TIA-232E TRANSMITTER OUTPUTS
EIA/TIA-232E RECEIVER INPUTS
MAX213E, SHDN = 0V,
EN = VCC 0.6 1.5
Note 1: MAX211EE_ _ tested with VCC = +5V ±5%.
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
__________________________________________Typical Operating Characteristics
(Typical Operating Circuits, VCC = +5V, TA= +25°C, unless otherwise noted.)
5.0
0
MAX232E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX202E-TOC1
LOAD CAPACITANCE (pF)
VOH, -VOL (V)
5.5
6.0
6.5
7.0
7.5
8.0
1000 2000 3000 4000 5000
VCC = 5.5V
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
RL = 3kΩ
VCC = 4.5V
VCC = 5.0V
5.0
0
MAX202E/MAX203E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX202E-TOC2
LOAD CAPACITANCE (pF)
VOH, -VOL (V)
5.5
6.0
6.5
7.0
7.5
8.0
1000 2000 3000 4000 5000
VCC = 5.5V
VCC = 4.5V
VCC = 5.0V
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
RL = 3kΩ
5.0
0
MAX241E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX202E-TOC3
LOAD CAPACITANCE (pF)
VOH, -VOL (V)
5.5
6.0
6.5
7.0
7.5
8.0
1000 2000 3000 4000 5000
VCC = 4.5V
VCC = 5.5V
VCC = 5.0V
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
RL = 3kΩ
5.0
0
MAX211E/MAX213E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX202E-TOC4
LOAD CAPACITANCE (pF)
VOH, -VOL (V)
5.5
6.0
6.5
7.0
7.5
8.0
1000 2000 3000 4000 5000
VCC = 4.5V
VCC = 5.5V
VCC = 5.0V
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
RL = 3kΩ
0
0
MAX211E/MAX213E/MAX241E
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
MAX202E-TOC5
LOAD CAPACITANCE (pF)
SLEW RATE ( V/μs)
5
10
15
20
25
30
1000 2000 3000 4000 5000
+SLEW RATE
-SLEW RATE
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
RL = 3kΩ
4
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________________________Typical Operating Characteristics (continued)
(Typical Operating Circuits, VCC = +5V, TA= +25°C, unless otherwise noted.)
2
0
MAX202E/MAX203E/MAX232E
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
MAX202E-TOC6
LOAD CAPACITANCE (pF)
SLEW RATE ( V/μs)
4
6
8
10
12
14
1000 2000 3000 4000 5000
+SLEW RATE
-SLEW RATE
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
RL = 3kΩ5.0
7.5
-7.5
0 3000
MAX205E–MAX208E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
-5.0
2.5
MAX202E TOC-07
LOAD CAPACITANCE (pF)
OUTPUT VOLTAGE (V)
1000 2000 4000 5000
0
-2.5
VCC = +4.5V, RL = 3kΩ
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
240kbps
240kbps
120kbps
120kbps
20kbps
20kbps
45
50
20
0 3000
MAX205E–MAX208E
SUPPLY CURRENT
vs. LOAD CAPACITANCE
25
40
MAX202E TOC-09
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
1000 2000 4000 5000
35
30
VCC = +4.5V, RL = 3kΩ
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
240kbps
120kbps
20kbps
10
12
0
0 3000
MAX205E–MAX208E
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
2
8
MAX202E TOC-08
LOAD CAPACITANCE (pF)
SLEW RATE (V/μs)
1000 2000 4000 5000
6
4
20
18
16
14
VCC = +4.5V, RL = 3kΩ
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
FALL
RISE
2.5
5.0
-10.0
0 180
MAX205E–MAX208E
OUTPUT VOLTAGE vs. DATA RATE
-7.5
0
MAX202E TOC-10
DATA RATE (kbps)
OUTPUT VOLTAGE (V)
60 120 24015030 90 210
-2.5
-5.0
10.0
7.5
VCC = +4.5V, RL = 3kΩ
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
V+
V-
VOUT+
VOUT-
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
MAX203E
MAX205E
_____________________________________________________________Pin Descriptions
MAX202E/MAX232E
15
10, 11
9, 12
8, 13
Ground19
RS-232 Driver Inputs13, 14
7, 14
6
4, 5
RS-232 Receiver Outputs12, 15
RS-232 Receiver Inputs10, 17
RS-232 Driver Outputs9, 18
-2VCC Voltage Generated by the Charge Pump8
2
1, 3
Terminals for Negative Charge-Pump Capacitor5, 7
+2VCC Voltage Generated by the Charge Pump3
+4.5V to +5.5V Supply-Voltage Input
Terminals for Positive Charge-Pump Capacitor2, 4
2016
GND
T_IN
R_OUT
R_IN
T_OUT
V-
C2+, C2-
V+
C1+, C1-
VCC
N.C. No Connection—Not Internally Connected1, 6, 11, 16
__
FUNCTIONNAME
PIN
DIP/SO/TSSOP LCC
11, 15 12, 15 Connect pins together.C2+
NAME
14 8+2VCC Voltage Generated by the Charge PumpV+
SO
C1-
T_IN
R_OUT
R_IN
T_OUT
GND
VCC
C1+
C2-
V-
13
FUNCTION
14
1, 2 RS-232 Driver Inputs
Make no connection to this pin.
3, 20 RS-232 Receiver Outputs
4, 19 RS-232 Receiver Inputs
1, 2
3, 20
5, 18 RS-232 Transmitter Outputs
6, 9 Ground
7+4.5V to +5.5V Supply-Voltage Input
13 Make no connection to this pin.
4,19
5,18
6, 9
11, 16 Connect pins together.
10, 17 -2VCC Voltage Generated by the Charge Pump. Connect pins together.
7
8
10, 16
12, 17
DIP
PIN
NAME FUNCTION
T_OUT RS-232 Driver Outputs
R_IN RS-232 Receiver Inputs
R_OUT TTL/CMOS Receiver Outputs. All receivers are inactive in shutdown.
PIN
1–4, 19
5, 10, 13, 18, 24
T_IN TTL/CMOS Driver Inputs. Internal pullups to VCC.
GND Ground
VCC +4.75V to +5.25V Supply Voltage
EN Receiver Enable—Active Low
6, 9, 14, 17, 23
7, 8, 15, 16, 22
11
12
20
SHDN Shutdown Control—Active High21
6
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
MAX208E
________________________________________________Pin Descriptions (continued)
MAX206E
MAX207E
V+
NAME FUNCTION
+2VCC Generated by the Charge Pump
T_OUT RS-232 Driver Outputs
11
R_IN RS-232 Receiver Inputs
R_OUT TTL/CMOS Receiver Outputs. All receivers are inactive in shutdown.
PIN
1, 2, 3, 24
4, 16, 23
T_IN TTL/CMOS Driver Inputs. Internal pullups to VCC.
GND Ground
VCC +4.5V to +5.5V Supply Voltage
C1+, C1- Terminals for Positive Charge-Pump Capacitor
5, 17, 22
6, 7, 18, 19
8
9
10, 12
EN Receiver Enable—Active Low20
C2+, C2- Terminals for Negative Charge-Pump Capacitor
V- -2VCC Generated by the Charge Pump
13, 14
15
SHDN Shutdown Control—Active High21
V+
NAME FUNCTION
+2VCC Generated by the Charge Pump
T_OUT RS-232 Driver Outputs
11
R_IN RS-232 Receiver Inputs
R_OUT TTL/CMOS Receiver Outputs. All receivers are inactive in shutdown.
PIN
1, 2, 3, 20, 24
4, 16, 23
T_IN TTL/CMOS Driver Inputs. Internal pullups to VCC.
GND Ground
C2+, C2-
VCC +4.75V to +5.25V Supply Voltage
Terminals for Negative Charge-Pump Capacitor
C1+, C1- Terminals for Positive Charge-Pump Capacitor
5, 17, 22
6, 7, 18, 19, 21
8
V- -2VCC Generated by the Charge Pump
13, 14
15
9
10, 12
V+
NAME FUNCTION
+2VCC Generated by the Charge Pump
T_OUT RS-232 Driver Outputs
11
R_IN RS-232 Receiver Inputs
R_OUT TTL/CMOS Receiver Outputs. All receivers are inactive in shutdown.
PIN
1, 2, 20, 24
3, 7, 16, 23
T_IN TTL/CMOS Driver Inputs. Internal pullups to VCC.
GND Ground
C2+, C2-
VCC +4.5V to +5.5V Supply Voltage
Terminals for Negative Charge-Pump Capacitor
C1+, C1- Terminals for Positive Charge-Pump Capacitor
4, 6, 17, 22
5, 18, 19, 21
8
V- -2VCC Generated by the Charge Pump
13, 14
15
9
10, 12
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
V+
GND
MAX206E
MAX211E
MAX213E
MAX241E
0.1μF*
VCC
0.1μF*
R1 TO R5
T1 TO T5
0.1μF*
C1+
C1-
C2+
C2-
VCC
+5.5V T_OUT
R_OUT
400kΩ
5kΩ
ISHDN
0V OR +5.5V
DRIVE
0.1μF*
0.1μF*
3kΩ
+5.5V
R_IN
T_IN
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED
( ) ARE FOR MAX213E
* 1μF FOR MAX241E
EN (EN)
SHDN (SHDN)
+5.5V (0V)
V-
+5.5V
Figure 1. Shutdown-Current Test Circuit (MAX206E,
MAX211E/MAX213E/MAX241E)
+3.5V
EN
INPUT
OUTPUT ENABLE TIME
+2.5V
RECEIVER
OUTPUT
CL = 150pF
RECEIVER
OUTPUTS
OUTPUT DISABLE TIME
VOH - 0.1V
VOH
VOL VOL + 0.1V
RL = 1kΩ
NOTE:
POLARITY OF EN
IS REVERSED
FOR THE
MAX213E
+0.8V
0V
+3V
+3V
EN
INPUT
0V
Figure 2. Receiver Output Enable and Disable Timing
(MAX205E/MAX206E/MAX211E/MAX213E/MAX241E)
17
NAME FUNCTION
V-
T_OUT RS-232 Driver Outputs
-2VCC Voltage Generated by the Charge Pump
R_IN RS-232 Receiver Inputs
24
R_OUT TTL/CMOS Receiver Outputs. For the MAX213E, receivers R4 and R5 are active in shutdown
mode when EN = 1. For the MAX211E and MAX241E, all receivers are inactive in shutdown.
PIN
1, 2, 3, 28
4, 9, 18, 23, 27
EN
T_IN TTL/CMOS Driver Inputs. Only the MAX211E, MAX213E, and MAX241E have internal pullups to VCC.
Receiver Enable—Active High (MAX213E)
GND Ground
25
VCC +4.5V to +5.5V Supply Voltage
SHDN
C1+, C1- Terminals for Positive Charge-Pump Capacitor
5, 8, 19, 22, 26
6, 7, 20, 21
10
Shutdown Control—Active Low (MAX213E)
V+ +2VCC Voltage Generated by the Charge Pump
C2+, C2- Terminals for Negative Charge-Pump Capacitor
11
12, 14
13
15, 16
EN Receiver Enable—Active Low (MAX211E, MAX241E)
SHDN Shutdown Control—Active High (MAX211E, MAX241E)
________________________________________________Pin Descriptions (continued)
MAX211E/MAX213E/MAX241E
8
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
V+
MAX2_ _E
0.1μF*
VCC
0.1μF*
T_
R_
0.1μF*
C1+
C1-
C2+
C2-
VCC
T_OUT
R_OUT
EN (EN)
SHDN (SHDN)
400kΩ
5kΩ
0.1μF*
0.1μF*
3kΩ
+5V
R_IN
T_IN
MINIMUM SLEW-RATE TEST CIRCUIT
0V (+5V)
0V (+5V)
2500pF
V-
V+
0.1μF*
VCC
0.1μF*
R_
T_
0.1μF*
C1+
C1-
C2+
C2-
VCC
T_OUT
R_OUT
EN (EN)
SHDN (SHDN)
400kΩ
5kΩ
0.1μF*
0.1μF*
7kΩ
+5V
R_IN
T_IN
MAXIMUM SLEW-RATE TEST CIRCUIT
0V (+5V)
0V (+5V)
50pF
V-
( ) ARE FOR MAX213E
* 1μF FOR MAX232E/MAX241E
MAX2_ _E
TRANSMITTER INPUT PULL-UP RESISTORS, ENABLE, AND SHUTDOWN ARE NOT PROVIDED ON THE MAX202E, MAX203E, AND MAX232E.
ENABLE AND SHUTDOWN ARE NOT PROVIDED ON THE MAX207E AND MAX208E.
Figure 3. Transition Slew-Rate Circuit
_______________Detailed Description
The MAX202E–MAX213E, MAX232E/MAX241E consist of
three sections: charge-pump voltage converters,
drivers (transmitters), and receivers. These E versions
provide extra protection against ESD. They survive
±15kV discharges to the RS-232 inputs and outputs,
tested using the Human Body Model. When tested
according to IEC1000-4-2, they survive ±8kV contact-
discharges and ±15kV air-gap discharges. The rugged
E versions are intended for use in harsh environments
or applications where the RS-232 connection is
frequently changed (such as notebook computers). The
standard (non-“E”) MAX202, MAX203, MAX205–
MAX208, MAX211, MAX213, MAX232, and MAX241 are
recommended for applications where cost is critical.
+5V to ±10V Dual Charge-Pump
Voltage Converter
The +5V to ±10V conversion is performed by dual
charge-pump voltage converters (Figure 4). The first
charge-pump converter uses capacitor C1 to double
the +5V into +10V, storing the +10V on the output filter
capacitor, C3. The second uses C2 to invert the +10V
into -10V, storing the -10V on the V- output filter
capacitor, C4.
In shutdown mode, V+ is internally connected to VCC by
a 1kΩpull-down resistor, and V- is internally connected
to ground by a 1kΩpull up resistor.
RS-232 Drivers
With VCC = 5V, the typical driver output voltage swing
is ±8V when loaded with a nominal 5kΩRS-232
receiver. The output swing is guaranteed to meet
EIA/TIA-232E and V.28 specifications that call for ±5V
minimum output levels under worst-case conditions.
These include a 3kΩload, minimum VCC, and
maximum operating temperature. The open-circuit
output voltage swings from (V+ - 0.6V) to V-.
Input thresholds are CMOS/TTL compatible. The
unused drivers’ inputs on the MAX205E–MAX208E,
MAX211E, MAX213E, and MAX241E can be left
unconnected because 400kΩpull up resistors to VCC
are included on-chip. Since all drivers invert, the pull up
resistors force the unused drivers’ outputs low. The
MAX202E, MAX203E, and MAX232E do not have pull
up resistors on the transmitter inputs.
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
When in low-power shutdown mode, the MAX205E/
MAX206E/MAX211E/MAX213E/MAX241E driver outputs
are turned off and draw only leakage currents—even if
they are back-driven with voltages between 0V and
12V. Below -0.5V in shutdown, the transmitter output is
diode-clamped to ground with a 1kΩseries
impedance.
RS-232 Receivers
The receivers convert the RS-232 signals to CMOS-logic
output levels. The guaranteed 0.8V and 2.4V receiver
input thresholds are significantly tighter than the ±3V
thresholds required by the EIA/TIA-232E specification.
This allows the receiver inputs to respond to TTL/CMOS-
logic levels, as well as RS-232 levels.
The guaranteed 0.8V input low threshold ensures that
receivers shorted to ground have a logic 1 output. The
5kΩinput resistance to ground ensures that a receiver
with its input left open will also have a logic 1 output.
Receiver inputs have approximately 0.5V hysteresis.
This provides clean output transitions, even with slow
rise/fall-time signals with moderate amounts of noise
and ringing.
In shutdown, the MAX213E’s R4 and R5 receivers have
no hysteresis.
Shutdown and Enable Control
(MAX205E/MAX206E/MAX211E/
MAX213E/MAX241E)
In shutdown mode, the 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 MAX213E).
The time required to exit shutdown is under 1ms, as
shown in Figure 5.
Receivers
All MAX213E receivers, except R4 and R5, are put into
a high-impedance state in shutdown mode (see Tables
1a and 1b). The MAX213E’s R4 and R5 receivers still
function in shutdown mode. These two awake-in-
shutdown receivers can monitor external activity while
maintaining minimal power consumption.
The enable control is used to put the receiver outputs into
a high-impedance state, to allow wire-OR connection of
two EIA/TIA-232E ports (or ports of different types) at the
UART. It has no effect on the RS-232 drivers or the
charge pumps.
Note: The enable control pin is active low for the
MAX211E/MAX241E (EN), but is active high for the
MAX213E (EN). The shutdown control pin is active high
for the MAX205E/MAX206E/MAX211E/MAX241E
(SHDN), but is active low for the MAX213E (SHDN).
C1-
IL- RL-
V+
S1
V -
fCLK
S2 S5 S6
C1 C3 C2
IL + RL +
S3 S4 S7 S8
C4
C1+
GND
GND
VCC
VCC
C2-
C2+
PART fCLK
(kHz)
MAX202E
MAX211E/213E
MAX232E
MAX203E 230
MAX205E–208E 200
200
140
MAX241E 30
230
Figure 4. Charge-Pump Diagram
10
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
V+
V-
200μs/div
3V
0V
10V
5V
0V
-5V
-10V
SHDN
MAX211E
Figure 5. MAX211E V+ and V- when Exiting Shutdown (0.1µF
capacitors)
X = Don't care.
*
Active = active with reduced performance
SHDN EENNOPERATION
STATUS Tx Rx
0 0 Normal
Operation All Active All Active
0 1 Normal
Operation All Active All High-Z
1 X Shutdown All High-Z All High-Z
Table 1a. MAX205E/MAX206E/MAX211E/
MAX241E Control Pin Configurations
Table 1b. MAX213E Control Pin
Configurations
The MAX213E’s receiver propagation delay is typically
0.5µs in normal operation. In shutdown mode,
propagation delay increases to 4µs for both rising and
falling transitions. The MAX213E’s receiver inputs have
approximately 0.5V hysteresis, except in shutdown,
when receivers R4 and R5 have no hysteresis.
When entering shutdown with receivers active, R4 and
R5 are not valid until 80µs after SHDN is driven low.
When coming out of shutdown, all receiver outputs are
invalid until the charge pumps reach nominal voltage
levels (less than 2ms when using 0.1µF capacitors).
±15kV ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against
electrostatic discharges encountered during handling
and assembly. The driver outputs and receiver inputs
have extra protection against static electricity. Maxim’s
engineers developed state-of-the-art structures to
protect these pins against ESD of ±15kV without
damage. The ESD structures withstand high ESD in all
states: normal operation, shutdown, and powered
down. After an ESD event, Maxim’s E versions keep
working without latchup, whereas competing RS-232
products can latch and must be powered down to
remove latchup.
ESD protection can be tested in various ways; the
transmitter outputs and receiver inputs of this product
family are characterized for protection to the following
limits:
1) ±15kV using the Human Body Model
2) ±8kV using the contact-discharge method specified
in IEC1000-4-2
3) ±15kV using IEC1000-4-2’s air-gap method.
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test set-up, test methodology, and test results.
Human Body Model
Figure 6a shows the Human Body Model, and Figure
6b shows the current waveform it generates when
discharged into a low impedance. This model consists
of a 100pF capacitor charged to the ESD voltage of
interest, which is then discharged into the test device
through a 1.5kΩresistor.
SSHHDDNNEN OPERATION
STATUS Tx 1–4
0 0 Shutdown All High-Z
0 1 Shutdown All High-Z
1 0 Normal
Operation
1 1 Normal
Operation All Active
All Active
Active
1–3 4, 5
High-Z
Active
High-Z
High-Z
High-Z
Active*
High-Z
Rx
Maxim Integrated
11
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
IEC1000-4-2
The IEC1000-4-2 standard covers ESD testing and
performance of finished equipment; it does not
specifically refer to integrated circuits. The
MAX202E/MAX203E–MAX213E, MAX232E/MAX241E
help you design equipment that meets level 4 (the
highest level) of IEC1000-4-2, without the need for
additional ESD-protection components.
The major difference between tests done using the
Human Body Model and IEC1000-4-2 is higher peak
current in IEC1000-4-2, because series resistance is
lower in the IEC1000-4-2 model. Hence, the ESD
withstand voltage measured to IEC1000-4-2 is
generally lower than that measured using the Human
Body Model. Figure 7b shows the current waveform for
the 8kV IEC1000-4-2 level-four ESD contact-discharge
test.
The air-gap test involves approaching the device with a
charged probe. The contact-discharge method
connects the probe to the device before the probe is
energized.
Machine Model
The Machine Model for ESD tests all pins using a
200pF storage capacitor and zero discharge
resistance. Its objective is to emulate the stress caused
by contact that occurs with handling and assembly
during manufacturing. Of course, all pins require this
protection during manufacturing, not just RS-232 inputs
and outputs. Therefore, after PC board assembly, the
Machine Model is less relevant to I/O ports.
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC 50MΩ to 100MΩRD 330Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 7a. IEC1000-4-2 ESD Test Model
tr = 0.7ns to 1ns
30ns
60ns
t
100%
90%
10%
IPEAK
I
Figure 7b. IEC1000-4-2 ESD Generator Current Waveform
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC 1MΩRD 1500Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 6a. Human Body ESD Test Model
IP 100%
90%
36.8%
tRL TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPERES
Figure 6b. Human Body Model Current Waveform
12
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
__________Applications Information
Capacitor Selection
The capacitor type used for C1–C4 is not critical for
proper operation. The MAX202E, MAX206–MAX208E,
MAX211E, and MAX213E require 0.1µF capacitors,
and the MAX232E and MAX241E require 1µF
capacitors, although in all cases capacitors up to 10µF
can be used without harm. Ceramic, aluminum-
electrolytic, or tantalum capacitors are suggested for
the 1µF capacitors, and ceramic dielectrics are
suggested for the 0.1µF capacitors. When using the
minimum recommended capacitor values, make sure
the capacitance value does not degrade excessively
as the operating temperature varies. If in doubt, use
capacitors with a larger (e.g., 2x) nominal value. The
capacitors’ effective series resistance (ESR), which
usually rises at low temperatures, influences the
amount of ripple on V+ and V-.
Use larger capacitors (up to 10µF) to reduce the output
impedance at V+ and V-. This can be useful when
“stealing” power from V+ or from V-. The MAX203E and
MAX205E have internal charge-pump capacitors.
Bypass VCC to ground with at least 0.1µF. In
applications sensitive to power-supply noise generated
by the charge pumps, decouple VCC to ground with a
capacitor the same size as (or larger than) the charge-
pump capacitors (C1–C4).
V+ and V- as Power Supplies
A small amount of power can be drawn from V+ and V-,
although this will reduce both driver output swing and
noise margins. Increasing the value of the charge-pump
capacitors (up to 10µF) helps maintain performance
when power is drawn from V+ or V-.
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
The driver outputs display no ringing or undesirable
transients as they come out of shutdown.
High Data Rates
These transceivers maintain the RS-232 ±5.0V
minimum driver output voltages at data rates of over
120kbps. For data rates above 120kbps, refer to the
Transmitter Output Voltage vs. Load Capacitance
graphs in the
Typical Operating Characteristics
.
Communication at these high rates is easier if the
capacitive loads on the transmitters are small; i.e.,
short cables are best.
Table 2. Summary of EIA/TIA-232E, V.28 Specifications
PARAMETER CONDITIONS EIA/TIA-232E, V.28
SPECIFICATIONS
0 Level
3kΩto 7kΩload +5V to +15V
Data Rate 3kΩ≤RL≤7kΩ, CL≤2500pF Up to 20kbps
+3V to +15V
Instantaneous Slew Rate, Max 3kΩ≤RL≤7kΩ, CL≤2500pF 30V/µs
Driver Output Short-Circuit Current, Max 100mA
Transition Rate on Driver Output
V.28 1ms or 3% of the period
Driver Output Resistance -2V < VOUT < +2V 300Ω
EIA/TIA-232E 4% of the period
Driver Output Level, Max No load ±25V
Driver Output Voltage
3kΩto 7kΩload -5V to -15V
0 Level
1 Level
1 Level
Receiver Input Level ±25V
Receiver Input Voltage
-3V to -15V
Maxim Integrated
13
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
TOP VIEW
1
4
5
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
11
10
12
9
3
GND
C1-
C2+
5kΩ
5kΩ
C2-
T1IN
T2IN
R2OUT
R1OUT
VCC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
16
2
6
14
7
13
8
0.1μF
0.1μF*
16V
0.1μF*
6.3V
0.1μF*
16V
0.1μF*
6.3V
C1+
RS-232
OUTPUTS
RS-232
INPUTS
-10V
+10V
V+
+5V INPUT
V-
T1OUT
R1IN
R2IN
T2OUT
T1
15
T2
R1
R2
PIN NUMBERS ON TYPICAL OPERATING CIRCUIT REFER TO DIP/SO/TSSOP PACKAGE, NOT LCC.
* 1.0μF CAPACITORS, MAX232E ONLY.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VCC
GND
T1OUT
R1IN
C2+
C1-
V+
C1+
MAX202E
MAX232E R1OUT
T1IN
T2IN
R2OUT
R2IN
T2OUT
V-
C2-
DIP/SO/TSSOP
Table 3. DB9 Cable Connections
Commonly Used for EIA/TIA-232E and
V.24 Asynchronous Interfaces
PIN CONNECTION
2Receive Data (RD) Data from DCE
3Transmit Data (TD) Data from DTE
4Data Terminal Ready Handshake from DTE
5Signal Ground Reference point for
signals
6Data Set Ready (DSR) Handshake from DCE
7Request to Send (RTS) Handshake from DTE
8Clear to Send (CTS) Handshake from DCE
9Ring Indicator Handshake from DCE
1
Received Line Signal
Detector (sometimes
called Carrier Detect,
DCD)
Handshake from DCE
14
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
R2OUT
R2IN
T2OUT
V-
R1IN
R1OUT
T1IN
T2IN
C2-
C2+
V+ (C1-)
C1- (C1+)
C1+ (V+)
VCC
GND
T1OUT
12
11
9
10
V- (C2+)
C2+ (C2-)
C2- (V-)
GND
DIP/SO
MAX203E
TOP VIEW
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
2
1
3
20
GND GND
400kΩ
5kΩ
5kΩ
T1IN
T2IN
R2OUT
R1OUT
VCC
7
5
18
4
19
0.1μF
RS-232
OUTPUTS
RS-232
INPUTS
+5V
400kΩ
+5V
+5V INPUT
T1OUT
R1IN
R2IN
T2OUT
T1
96
T2
R1
R2
V-
V-
C1-
C1+
8(13)
13(14)
12(10)
17
14(8)
DO NOT MAKE
CONNECTION TO
THESE PINS
INTERNAL -10V
POWER SUPPLY
INTERNAL +10V
POWER SUPPLY V+
C2-
C2-
C2+
C2+ 11
15
16
10 (11)
PIN NUMBERS IN () ARE FOR SO PACKAGE.
(12)
Maxim Integrated
15
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
T4OUT
T3OUT
T1OUT
T2OUT
R2IN
R2OUT
T2IN
T1IN
R1OUT
R1IN
GND
VCC
DIP
TOP VIEW
MAX205E
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
R3IN
R3OUT
T5IN
SHDN
EN
T5OUT
R4IN
R4OUT
T4IN
T3IN
R5OUT
R5IN
VCC
TTL/CMOS
INPUTS
GND
SHDN
+5V INPUT
+5V
T2OUT
400kΩ
T2IN T2 4
+5V
T3OUT
400kΩ
T3IN T3 2
+5V
T4OUT
400kΩ
T4IN T4 1
+5V
T5OUT
400kΩ
T5IN T5 19
5kΩ
R1
R1OUT R1IN
5kΩ
R2
R2OUT R2IN
5kΩ
R3
R3OUT R3IN
8
7
15
16
22
9
6
23
10
5
24
5kΩ
R4OUT R4IN
17 18
5kΩ
R5
R5OUT R5IN
14 13
EN
20 21
11
12
TTL/CMOS
OUTPUTS
+5V
T1OUT
400kΩ
T1IN T1 3
RS-232
OUTPUTS
RS-232
INPUTS
R4
0.1μF
16
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
T3OUT
T1OUT
T2OUT
R1IN
R1OUT
T2IN
T1IN
GND
VCC
C1+
V+
C1-
DIP/SO/SSOP
TOP VIEW
MAX206E
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
T4OUT
R2IN
R2OUT
SHDN
EN
T4IN
T3IN
R3OUT
R3IN
V-
C2-
C2+
VCC
TTL/CMOS
INPUTS
GND
SHDN
+5V INPUT
+5V
T1OUT
400kΩ
T1IN T1 2
+5V
T2OUT
400kΩ
T2IN T2 3
+5V
T3OUT
400kΩ
T3IN T3 1
+5V
T4OUT
400kΩ
T4IN T4 24
5kΩ
R1
R1OUT R1IN
5kΩ
R2
R2OUT R2IN
5kΩ
R3
R3OUT R3IN
7
6
18
19
5
22
17
4
23
16
EN
20 21
8
9
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
0.1μF
V+
0.1μF
6.3V
0.1μF
16V
C1+
C1-
0.1μF
6.3V
0.1μF
16V
V-
10
12
13
14
C2+
C2-
11
15
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
Maxim Integrated
17
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
T3OUT
T1OUT
T2OUT
R1IN
R1OUT
T2IN
T1IN
GND
VCC
C1+
V+
C1-
DIP/SO/SSOP
TOP VIEW
MAX207E
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
T4OUT
R2IN
R2OUT
T5IN
T5OUT
T4IN
T3IN
R3OUT
R3IN
V-
C2-
C2+
VCC
TTL/CMOS
INPUTS
GND
+5V INPUT
+5V
T2OUT
400kΩ
T2IN T2
+5V
T1OUT
400kΩ
T1IN T1
3
+5V
T3OUT
400kΩ
T3IN T3 1
+5V
T4OUT
400kΩ
T4IN T4 24
+5V
T5OUT
400kΩ
T5IN T5 20
5kΩ
R1
R1OUT R1IN
5kΩ
R2
R2OUT R2IN
5kΩ
R3
R3OUT R3IN
7
6
18
19
21
5
22
17
4
23
16
8
9
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
0.1μF
V+
0.1μF
6.3V
0.1μF
16V
C1+
C1-
0.1μF
6.3V
0.1μF
16V
V-
10
12
13
14
C2+
C2-
11
15
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
2
18
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
T2OUT
T1OUT
R2IN
R2OUT
T1IN
R1OUT
R1IN
GND
VCC
C1+
V+
C1-
DIP/SO/SSOP
TOP VIEW
MAX208E
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
T3OUT
R3IN
R3OUT
T4IN
T4OUT
T3IN
T2IN
R4OUT
R4IN
V-
C2-
C2+
VCC
TTL/CMOS
INPUTS
GND
+5V INPUT
+5V
T1OUT
400kΩ
T1IN T1 2
+5V
T2OUT
400kΩ
T2IN T2 1
+5V
T3OUT
400kΩ
T3IN T3 24
+5V
T4OUT
400kΩ
T4IN T4 20
5kΩ
R1
R1OUT R1IN
5kΩ
R2
R2OUT R2IN
5kΩ
5kΩ
R3
R3OUT R3IN
5
18
19
21
6
4
22
7
3
23
8
9
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
R4
R4OUT R4IN
17 16
0.1μF
V+
0.1μF
6.3V
0.1μF
16V
C1+
C1-
0.1μF
6.3V
0.1μF
16V
V-
10
12
13
14
C2+
C2-
11
15
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
Ω
Maxim Integrated
19
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
____________Pin Configurations and Typical Operating Circuits (continued)
T3OUT
T1OUT
T2OUT
R2IN
R2OUT
T2IN
T1IN
R1OUT
R1IN
GND
VCC
C1+
V+
C1-
SO/SSOP
TOP VIEW
MAX211E
MAX213E
MAX241E
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
T4OUT
R3IN
R3OUT
SHDN (SHDN)
EN (EN)
R4IN
R4OUT
T4IN
T3IN
R5OUT
R5IN
V-
C2-
C2+
V+
0.1μF*
6.3V
VCC
0.1μF
0.1μF*
16V
C1+
C1-
0.1μF*
6.3V
0.1μF*
16V
TTL/CMOS
INPUTS
GND
SHDN (SHDN)
V-
12
14
15
16
+5V INPUT
C2+
C2-
13
17
+5V
T1OUT
400kΩ
T1IN T1 2
+5V
T2OUT
400kΩ
T2IN T2 3
+5V
T3OUT
400kΩ
T3IN T3 1
+5V
T4OUT
400kΩ
T4IN T4 28
5kΩ
R1
R1OUT R1IN
5kΩ
R2
R2OUT R2IN
5kΩ
R3
R3OUT R3IN
7
6
20
21
8
5
26
9
4
27
5kΩ
R4OUT R4IN
22 23
5kΩ
R5
R5OUT R5IN
19 18
EN (EN)
24 25
10
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
11
( ) ARE FOR MAX213E ONLY
* 1.0μF CAPACITORS, MAX241E ONLY
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
R4
20
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
Ordering Information (continued)
*
Dice are specified at TA= +25°C.
MAX241EEAI -40°C to +85°C 28 SSOP
28 SO
PART TTEEMMPP RRAANNGGEEPIN-PACKAGE
MAX213ECWI 0°C to +70°C
MAX213ECAI 0°C to +70°C 28 SSOP
MAX241EEWI -40°C to +85°C 28 SO
16 Wide SOMAX232ECWE 0°C to +70°C
MAX232EC/D 0°C to +70°C Dice*
MAX232EESE -40°C to +85°C 16 Narrow SO
MAX241ECAI 0°C to +70°C 28 SSOP
MAX241ECWI 0°C to +70°C 28 SO
MAX232EEWE -40°C to +85°C 16 Wide SO
MAX232EEPE -40°C to +85°C 16 Plastic DIP
MAX213EEAI -40°C to +85°C 28 SSOP
MAX232ECSE 0°C to +70°C 16 Narrow SO
MAX232ECPE 0°C to +70°C 16 Plastic DIP
MAX213EEWI -40°C to +85°C 28 SO
16 Wide SO0°C to +70°CMAX202ECWE
16 Plastic DIP-40°C to +85°CMAX202EEPE
16 Narrow SO-40°C to +85°CMAX202EESE
16 Wide SO-40°C to +85°CMAX202EEWE
Dice*0°C to +70°CMAX202EC/D
20 Plastic DIP-40°C to +85°CMAX203EEPP
24 Wide Plastic DIP0°C to +70°C
MAX205ECPG
24 Wide Plastic DIP-40°C to +85°CMAX205EEPG
24 Narrow Plastic DIP0°C to +70°C
MAX206ECNG
20 SO-40°C to +85°CMAX203EEWP
20 SO0°C to +70°CMAX203ECWP
0°C to +70°C
MAX203ECPP 20 Plastic DIP
24 SO0°C to +70°CMAX206ECWG
PIN-PACKAGETEMP RANGEPART
24 SSOP0°C to +70°CMAX206ECAG
24 Narrow Plastic DIP-40°C to +85°CMAX206EENG
24 SO-40°C to +85°CMAX206EEWG
24 SSOP-40°C to +85°CMAX206EEAG
24 Narrow Plastic DIP0°C to +70°C
MAX207ECNG
MAX207ECWG 0°C to +70°C 24 SO
MAX207ECAG 0°C to +70°C 24 SSOP
MAX207EENG -40°C to +85°C 24 Narrow Plastic DIP
MAX207EEWG -40°C to +85°C 24 SO
MAX207EEAG -40°C to +85°C 24 SSOP
24 Narrow Plastic DIP
MAX208ECNG 0°C to +70°C
28 SO
MAX211ECWI 0°C to +70°C
28 SSOPMAX211ECAI 0°C to +70°C
24 SSOPMAX208EEAG -40°C to +85°C
24 SOMAX208EEWG -40°C to +85°C
24 SOMAX208ECWG 0°C to +70°C
24 SSOPMAX208ECAG 0°C to +70°C
24 Narrow Plastic DIPMAX208EENG -40°C to +85°C
28 SOMAX211EEWI -40°C to +85°C
28 SSOPMAX211EEAI -40°C to +85°C
16 TSSOP0°C to +70°CMAX202ECUE
16 TSSOP-40°C to +85°CMAX202EEUE
Maxim Integrated
21
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
__________________________________________________________Chip Topographies
___________________Chip Information
C1-
V+ C1+ VCC
R2IN
T2OUT R2OUT
0.117"
(2.972mm)
0.080"
(2.032mm)
V-
C2+
C2-
T2IN
T1OUT
R1IN
R1OUT
T1IN
GND
R5IN
V-
C2-
C2+
C1-
V+
C1+VCC
T4OUT
R3IN
T3OUT
T1OUT
0.174"
(4.420mm)
0.188"
(4.775mm)
T4IN
R5OUT
R4OUT
T3IN
R4IN
EN (EN)
SHDN (SHDN)
R3OUT
T2OUT
GND
R1IN
R1OUT
T2IN
R2OUT
R2IN
T1IN
( ) ARE FOR MAX213E ONLY
TRANSISTOR COUNT: 123
SUBSTRATE CONNECTED TO GND
TRANSISTOR COUNT: 542
SUBSTRATE CONNECTED TO GND
MAX202E/MAX232E MAX211E/MAX213E/MAX241E
MAX205E/MAX206E/MAX207E/MAX208E
TRANSISTOR COUNT: 328
SUBSTRATE CONNECTED TO GND
22
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
PDIPN.EPS
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
Maxim Integrated
23
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
SSOP.EPS
PACKAGE OUTLINE, SSOP, 5.3 MM
1
1
21-0056 C
REV.DOCUMENT CONTROL NO.APPROVAL
TITLE:
NOTES:
1. D&E DO NOT INCLUDE MOLD FLASH.
2. MOLD FLASH OR PROTRUSIONS NOT TO EXCEED .15 MM (.006").
3. CONTROLLING DIMENSION: MILLIMETERS.
4. MEETS JEDEC MO150.
5. LEADS TO BE COPLANAR WITHIN 0.10 MM.
7.90
H
L
0∞
0.301
0.025
8∞
0.311
0.037
0∞
7.65
0.63
8∞
0.95
MAX
5.38
MILLIMETERS
B
C
D
E
e
A1
DIM
A
SEE VARIATIONS
0.0256 BSC
0.010
0.004
0.205
0.002
0.015
0.008
0.212
0.008
INCHES
MIN MAX
0.078
0.65 BSC
0.25
0.09
5.20
0.05
0.38
0.20
0.21
MIN
1.73 1.99
MILLIMETERS
6.07
6.07
10.07
8.07
7.07
INCHES
D
D
D
D
D
0.239
0.239
0.397
0.317
0.278
MIN
0.249
0.249
0.407
0.328
0.289
MAX MIN
6.33
6.33
10.33
8.33
7.33
14L
16L
28L
24L
20L
MAX N
A
D
eA1 L
C
HE
N
12
B
0.068
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
24
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
SOICW.EPS
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.
PACKAGE OUTLINE, .300" SOIC
1
1
21-0042 B
REV.DOCUMENT CONTROL NO.APPROVAL
TITLE:
0.5120.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
0.496D
D
MINDIM
D
INCHES
MAX
12.6013.00
MILLIMETERS
MINMAX
2012.6013.00
MILLIMETERS
MINMAX
2012.6013.00
MILLIMETERS
MINMAX
2012.6013.00
MILLIMETERS
MINMAX
2012.6013.00
MILLIMETERS
MINMAX
2012.6013.00
MILLIMETERS
MINMAX
20 AC
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
0.4470.463 AB11.7511.35 18
0.3980.413 AA10.5010.10 16
N MS013
SIDE VIEW
H0.4190.39410.0010.65
e 0.050 1.27
D0.6140.59815.20 2415.60 ADD 0.6140.59815.20 2415.60 ADD 0.6140.59815.20 2415.60 ADD 0.6140.59815.20 2415.60 ADD 0.6140.59815.20 2415.60 ADD 0.6140.59815.20 2415.60 ADD 0.6140.59815.20 2415.60 AD
D0.7130.69717.70 2818.10 AED 0.7130.69717.70 2818.10 AED 0.7130.69717.70 2818.10 AED 0.7130.69717.70 2818.10 AED 0.7130.69717.70 2818.10 AED 0.7130.69717.70 2818.10 AED 0.7130.69717.70 2818.10 AE
0∞-8∞0∞-8∞0∞-8∞
VARIATIONS:
TOP VIEW
FRONT VIEW
MAX
0.012
0.104
0.019
0.299
0.013
INCHES
0.291
0.009
E
C
DIM
0.014
0.004
B
A1
MIN
0.093A
0.23
7.40 7.60
0.32
MILLIMETERS
0.10
0.35
2.35
MIN
0.49
0.30
MAX
2.65
0.050
0.016L0.40 1.27
H 0.4190.394 10.00 10.65
e 0.050 1.27
H
E
N
D
A1
B
e
AC
L
1
TSSOP4.40mm.EPS
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
Maxim Integrated

MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
26 Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical
Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
© 2005 Maxim Integrated The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc.
MAX202E–MAX213E, MAX232E/MAX241E