+5V-Powered, Multichannel
MAX220MAX249
RS-232 Drivers/Receivers
General Description Benefits and Features
The MAX220MAX249 family of line drivers/receivers is
Saves Board Space
intended for all EIA/TIA-232E and V.28/V.24 communica-
Integrated Charge Pump Circuitry
tions interfaces, particularly applications where 12V is
Eliminates the Need for a Bipolar 12V Supply
not available.
Enables Single Supply Operation from +5V Supply
The MAX225, MAX233, MAX235, and MAX245/MAX246/
MAX247 use no external components and are
Integrated Capacitors (MAX223, MAX233, MAX235,
recommended for applications where printed circuit
MAX245-MAX247)
board space is critical.
Saves Power for Reduced Power Requirements
The MAX220-MAX249 are offered in 26 different pack-
ages with temperatures from 0 to +70C up to -55C to
5W Shutdown Mode
+125C. See ordering information table at the end of the
data sheet for all package and temperature options. Ordering Information and Selection Table appears at end
of data sheet.
Applications
Interface Translation
Multidrop RS-232 Networks
Portable Diagnostics Equipment
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit
+5V INPUT
C3
TOP VIEW
C5
16
+
1 V
CC 2
C1+
1 V
16 CC C1+ +10V
V+
+5V TO +10V
C1
3
C1-
V+
2 GND VOLTAGE DOUBLER
15
4
C2+ 6 -10V
+10V TO -10V
C1-
3 T1OUT V-
14
C2
5
VOLTAGE INVERTER
C2- C4
C2+ 4 MAX220 R1IN
13
+5V
MAX232
R1OUT 400k
C2- 5 12
MAX232A
T1IN
11 T1OUT 14
V-
6 11 T1IN
+5V
TTL/CMOS RS-232
T2OUT T2IN
7 10
INPUTS 400k OUTPUTS
9 R2OUT T2IN T2OUT 7
R2IN 8 10
DIP/SO
12 R1OUT R1IN
13
TTL/CMOS RS-232
5k
CAPACITANCE (F)
OUTPUTS INPUTS
DEVICE C1 C2 C3 C4 C5
8
9 R2OUT R2IN
MAX220 0.047 0.33 0.33 0.33 0.33
MAX232 1.0 1.0 1.0 1.0 1.0
5k
MAX232A 0.1 0.1 0.1 0.1 0.1
GND
15
19-4323; Rev 17; 1/15+5V-Powered, Multichannel
MAX220MAX249
RS-232 Drivers/Receivers
Absolute Maximum RatingsMAX220/222/232A/233A/242/243
(Voltages referenced to GND.) 16-Pin Narrow SO (derate 8.70mW/C above +70C) ...696mW
V ...........................................................................-0.3V to +6V 16-Pin Wide SO (derate 9.52mW/C above +70C)......762mW
CC
V+ (Note 1)..................................................(V - 0.3V) to +14V 18-Pin Wide SO (derate 9.52mW/C above +70C)......762mW
CC
V- (Note 1) ..............................................................+0.3V to -14V 20-Pin Wide SO (derate 10.00mW/C above +70C)....800mW
Input Voltages 20-Pin SSOP (derate 8.00mW/C above +70C) ..........640mW
TIN .............................................................-0.3V to (V - 0.3V) 16-Pin CERDIP (derate 10.00mW/C above +70C).....800mW
CC
RIN (Except MAX220)........................................................30V 18-Pin CERDIP (derate 10.53mW/C above +70C).....842mW
RIN (MAX220) ....................................................................25V Operating Temperature Ranges
TOUT (Except MAX220) (Note 2) ......................................15V MAX2_ _AC_ _, MAX2_ _C_ _.............................0C to +70C
MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40C to +85C
TOUT (MAX220)..............................................................13.2V
Output Voltages MAX2_ _AM_ _, MAX2_ _M_ _.......................-55C to +125C
TOUT..................................................................................15V Storage Temperature Range .............................-65C to +160C
ROUT........................................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C
CC
Driver/Receiver Output Short Circuited to GND.........Continuous Soldering Temperature (reflow)
Continuous Power Dissipation (T = +70C) 20 PDIP (P20M+1) .......................................................+225C
A
16-Pin Plastic DIP (derate 10.53mW/C above +70C)..842mW All other lead(Pb)-free packages.................................+260C
18-Pin Plastic DIP (derate 11.11mW/C above +70C)..889mW All other packages containing lead(Pb) ......................+240C
20-Pin Plastic DIP (derate 8.00mW/C above +70C) ..440mW
Note 1: For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V.
Note 2: Input voltage measured with TOUT in high-impedance state, V or V = 0V.
SHDN CC
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.
Electrical CharacteristicsMAX220/222/232A/233A/242/243
(V = +5V 10%, C1C4 = 0.1F MAX220, C1 = 0.047F, C2C4 = 0.33F, T = T to T unless otherwise noted.) (Note 3)
CC A MIN MAX
PARAMETER CONDITIONS MIN TYP MAX UNITS
RS-232 TRANSMITTERS
Output Voltage Swing All transmitter outputs loaded with 3k to GND 5 8 V
Input Logic-Low Voltage 1.4 0.8 V
All devices except MAX220 2 1.4
Input Logic-High Voltage V
MAX220: V = +5.0V 2.4
CC
All except MAX220, normal operation 5 40
Logic Pullup/lnput Current A
V = 0V, MAX222/MAX242, shutdown,
SHDN
0.01 1
MAX220
V = +5.5V, V = 0V, V = 15V,
CC SHDN OUT
0.01 10
MAX222/MAX242
Output Leakage Current A
V = 15V 0.01 10
OUT
V = V = 0V
CC SHDN
MAX220, V = 12V 25
OUT
Data Rate 200 116 kbps
Transmitter Output Resistance V = V+ = V- = 0V, V = 2V 300 10M
CC OUT
V = 0V 7 22
OUT
Output Short-Circuit Current V = 0V mA
OUT
MAX220 60
RS-232 RECEIVERS
30
RS-232 Input Voltage Operating Range V
MAX220 25
All except MAX243 R2IN 0.8 1.3
RS-232 Input Threshold Low V = +5V V
CC
MAX243 R2IN (Note 4) -3
All except MAX243 R2IN 1.8 2.4
RS-232 Input Threshold High V = +5V V
CC
MAX243 R2IN (Note 4) -0.5 -0.1
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