6 _______________________________________________________________________________________
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 Outputs10, 17
RS-232 Driver Outputs9, 18
-2V
CC
voltage generated by the charge pump8
2
1, 3
Terminals for negative charge-pump capacitor5, 7
+2V
CC
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-
V
CC
N.C. No Connect—not internally connected.1, 6, 11, 16
__
FUNCTIONNAME
PIN
DIP/SO/TSSOP
LCC
11, 15 12, 15 Connect pins together.C2+
NAME
14 8 +2V
CC
voltage generated by the charge pumpV+
SO
C1-
T_IN
R_OUT
R_IN
T_OUT
GND
V
CC
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 -2V
CC
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 pull-ups to V
CC
.
GND Ground
V
CC
+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
