19-4323; Rev 17; 1/15
MAX220–MAX249
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
General Description
The MAX220–MAX249 family of line drivers/receivers is
intended for all EIA/TIA-232E and V.28/V.24 communica-
tions interfaces, particularly applications where ±12V is
not available.
The MAX225, MAX233, MAX235, and MAX245/MAX246/
MAX247 use no external components and are
recommended for applications where printed circuit
board space is critical.
The MAX220-MAX249 are offered in 26 different pack-
ages with temperatures from 0 to +70°C up to -55°C to
+125°C. See ordering information table at the end of the
data sheet for all package and temperature options.
Applications
Interface Translation
Multidrop RS-232 Networks
Portable Diagnostics Equipment
Benefits and Features
Saves Board Space
Integrated Charge Pump Circuitry
Eliminates the Need for a Bipolar ±12V Supply
Enables Single Supply Operation from +5V Supply
Integrated Capacitors (MAX223, MAX233, MAX235,
MAX245-MAX247)
Saves Power for Reduced Power Requirements
5µW Shutdown Mode
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
TOP VIEW
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
V
CC
GND
T1OUT
R1IN
C2+
C1-
V+
C1+
+
MAX220
MAX232
MAX232A
R1OUT
T1IN
T2IN
R2OUT
R2IN
T2OUT
V-
C2-
DIP/SO
V+
V-
2
+10V
C1+
C1
C2
1
3
4
5
11
10
12
9
6
14
7
13
8
T1IN
R1OUT
T2IN
R2OUT
T1OUT
R1IN
T2OUT
R2IN
+5V INPUT
C2+
-10V
C4
RS-232
OUTPUTS
RS-232
INPUTS
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
GND
15
5kΩ
5kΩ
400kΩ
400kΩ
+5V
+5V
+10V TO -10V
VOLTAGE INVERTER
+5V TO +10V
VOLTAGE DOUBLER
16
C3
C5
CAPACITANCE (μF)
DEVICE
MAX220
MAX232
MAX232A
C1
0.047
1.0
0.1
C2
0.33
1.0
0.1
C3
0.33
1.0
0.1
C4
0.33
1.0
0.1
C5
0.33
1.0
0.1
C2-
C1-
V
CC
Ordering Information and Selection Table appears at end
of data sheet.
MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit
Maxim Integrated | 2www.maximintegrated.com
MAX220–MAX249
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
Absolute Maximum Ratings—MAX220/222/232A/233A/242/243
Electrical Characteristics—MAX220/222/232A/233A/242/243
(V
CC
= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T
A
= T
MIN
to T
MAX
‚ unless otherwise noted.) (Note 3)
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
SHDN
or V
CC
= 0V.
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.
(Voltages referenced to GND.)
V
CC
...........................................................................-0.3V to +6V
V+ (Note 1) ..................................................(V
CC
- 0.3V) to +14V
V- (Note 1) ..............................................................+0.3V to -14V
Input Voltages
TIN .............................................................-0.3V to (V
CC
- 0.3V)
RIN (Except MAX220)........................................................±30V
RIN (MAX220) ....................................................................±25V
TOUT (Except MAX220) (Note 2) ......................................±15V
TOUT (MAX220)..............................................................±13.2V
Output Voltages
TOUT..................................................................................±15V
ROUT........................................................-0.3V to (V
CC
+ 0.3V)
Driver/Receiver Output Short Circuited to GND.........Continuous
Continuous Power Dissipation (T
A
= +70°C)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW
18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)..889mW
20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW
18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW
20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW
20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW
18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mW
Operating Temperature Ranges
MAX2_ _AC_ _, MAX2_ _C_ _.............................0°C to +70°C
MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40°C to +85°C
MAX2_ _AM_ _, MAX2_ _M_ _.......................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
20 PDIP (P20M+1) .......................................................+225°C
All other lead(Pb)-free packages.................................+260°C
All other packages containing lead(Pb) ......................+240°C
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
MAX220: V
CC
= +5.0V 2.4
V
All except MAX220, normal operation 5 40
Logic Pullup/lnput Current
V
SHDN
= 0V, MAX222/MAX242, shutdown,
MAX220
±0.01 ±1
μA
V
CC
= +5.5V, V
SHDN
= 0V, V
OUT
= ±15V,
MAX222/MAX242
±0.01 ±10
V
OUT
= ±15V ±0.01 ±10
Output Leakage Current
V
CC
= V
SHDN
= 0V
MAX220, V
OUT
= ±12V ±25
μA
Data Rate 200 116 kbps
Transmitter Output Resistance V
CC
= V+ = V- = 0V, V
OUT
= ±2V 300 10M
V
OUT
= 0V ±7 ±22
Output Short-Circuit Current V
OUT
= 0V
MAX220 ±60
mA
RS-232 RECEIVERS
±30
RS-232 Input Voltage Operating Range
MAX220 ±25
V
All except MAX243 R2IN 0.8 1.3
RS-232 Input Threshold Low V
CC
= +5V
MAX243 R2IN (Note 4) -3
V
All except MAX243 R2IN 1.8 2.4
RS-232 Input Threshold High V
CC
= +5V
MAX243 R2IN (Note 4) -0.5 -0.1
V
MAX220–MAX249
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
Maxim Integrated | 3www.maximintegrated.com
Electrical Characteristics—MAX220/222/232A/233A/242/243 (continued)
(V
CC
= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T
A
= T
MIN
to T
MAX
‚ unless otherwise noted.) (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
All except MAX220/MAX243, V
CC
= +5V, no
hysteresis in shutdown
0.2 0.5 1.0
MAX220 0.3
RS-232 Input Hysteresis
MAX243 1
V
3 5 7
RS-232 Input Resistance T
A
= +25°C (MAX220)
3 5 7
k
I
OUT
= 3.2mA 0.2 0.4
TTL/CMOS Output Voltage Low
I
OUT
= 1.6mA (MAX220) 0.4
V
TTL/CMOS Output Voltage High I
OUT
= -1.0mA 3.5 V
CC
- 0.2 V
Sourcing V
OUT
= V
GND
-2 -10
TTL/CMOS Output Short-Circuit Current
Sinking V
OUT
= V
CC
10 30
mA
TTL/CMOS Output Leakage Current
V
SHDN
= V
CC
or V
EN
= V
CC
(V
SHDN
= 0V for
MAX222), 0V V
OUT
V
CC
±0.05 ±10 μA
EN Input Threshold Low MAX242 1.4 0.8 V
EN Input Threshold High MAX242 2.0 1.4 V
Supply Voltage Range 4.5 5.5 V
MAX220 0.5 2
No load
MAX222/MAX232A/MAX233A/
MAX242/MAX243
4 10
MAX220 12
V
CC
Supply Current (V
SHDN
= V
CC
),
Figures 5, 6, 11, 19
3k load
both inputs
MAX222/MAX232A/MAX233A/
MAX242/MAX243
15
mA
T
A
= +25°C 0.1 10
T
A
= 0°C to +70°C 2 50
T
A
= -40°C to +85°C 2 50
Shutdown Supply Current
MAX222/
MAX242
T
A
= -55°C to +125°C 35 100
μA
SHDN Input Leakage Current MAX222/MAX242 ±1 μA
SHDN Threshold Low MAX222/MAX242 1.4 0.8 V
SHDN Threshold High MAX222/MAX242 2.0 1.4 V
MAX222/MAX232A/
MAX233/MAX242/MAX243
6 12 30
Transition Slew Rate
C
L
= 50pF to 2500pF,
R
L
= 3k to 7k,
V
CC
= +5V, T
A
=
+25°C, measured
from +3V to -3V or
-3V to +3V
MAX220 1.5 3 30.0
V/μs
MAX222/MAX232A/
MAX233/MAX242/MAX243
1.3 3.5
t
PHLT
, Figure 1
MAX220 4 10
MAX222/MAX232A/
MAX233/MAX242/MAX243
1.5 3.5
Transmitter Propagation Delay TLL to
RS-232 (Normal Operation)
t
PLHT
, Figure 1
MAX220 5 10
μs

MAX232MJE

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
MULTICHANNEL RS-232 DRIVERS/RECE
Lifecycle:
New from this manufacturer.
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