Datasheet

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