Datasheet

General Description
The MAX220–MAX249 family of line drivers/receivers is
intended for all EIA/TIA-232E and V.28/V.24 communications
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 packages
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
Benets 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
19-4323; Rev 18; 5/19
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
Ordering Information and Selection Table appears at end of
data sheet.
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
MAX220–MAX249 +5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220/MAX232/MAX232A Pin Conguration and Typical Operating Circuit
Click here for production status of specic part numbers.