±15kV ESD-Protected, +5V RS-232 Transceivers
MAX202E–MAX213E, MAX232E/MAX241E
________________________________________________Pin Descriptions (continued)
MAX211E/MAX213E/MAX241E
PIN
1, 2, 3, 28
4, 9, 18, 23, 27
5, 8, 19, 22, 26
6, 7, 20, 21
10
11
12, 14
13
15, 16
17
24
NAME
T_OUT
R_IN
R_OUT
T_IN
GND
V
CC
C1+, C1-
V+
C2+, C2-
V-
EN
EN
SHDN
SHDN
FUNCTION
RS-232 Driver Outputs
RS-232 Receiver Inputs
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.
TTL/CMOS Driver Inputs. Only the MAX211E, MAX213E, and MAX241E have internal pullups to V
CC.
Ground
+4.5V to +5.5V Supply Voltage
Terminals for Positive Charge-Pump Capacitor
+2V
CC
Voltage Generated by the Charge Pump
Terminals for Negative Charge-Pump Capacitor
-2V
CC
Voltage Generated by the Charge Pump
Receiver Enable—Active Low (MAX211E, MAX241E)
Receiver Enable—Active High (MAX213E)
Shutdown Control—Active High (MAX211E, MAX241E)
Shutdown Control—Active Low (MAX213E)
25
I
SHDN
+5.5V
0.1µF
*
C1+
0.1µF
*
C1-
C2+ V
CC
C2-
V
CC
V+
0.1µF
*
0.1µF
*
EN
INPUT
+3V
0V
OUTPUT ENABLE TIME
+3.5V
RECEIVER
OUTPUT
C
L
= 150pF
+0.8V
0.1µF
*
MAX206E
MAX211E
MAX213E
MAX241E
V-
400kΩ
+5.5V
T_IN
R1 TO R5
R_OUT
0V OR +5.5V
DRIVE
+5.5V (0V)
( ) ARE FOR MAX213E
*
1µF FOR MAX241E
EN (EN)
SHDN (SHDN)
T1 TO T5
T_OUT
3kΩ
R_IN
5kΩ
+5.5V
NOTE:
POLARITY OF EN
IS REVERSED
FOR THE
MAX213E
EN
INPUT
0V
+3V
OUTPUT DISABLE TIME
V
OH
V
OL
V
OH
- 0.1V
R
L
= 1kΩ
V
OL
+ 0.1V
+2.5V
RECEIVER
OUTPUTS
GND
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED
Figure 1. Shutdown-Current Test Circuit (MAX206E,
MAX211E/MAX213E/MAX241E)
Figure 2. Receiver Output Enable and Disable Timing
(MAX205E/MAX206E/MAX211E/MAX213E/MAX241E)
8
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
