Datasheet

+5V-Powered, Multichannel RS-232
Drivers/Receivers
GND
10
27R3OUT
23
R4OUT
R3IN
R4IN
5kΩ
5kΩ
5
4
R2OUT
R2IN
5kΩ
RS-232
INPUTS
LOGIC
OUTPUTS
RS-232
OUTPUTS
TTL/CMOS
INPUTS
R2
8
9
R1OUT
R1IN
5kΩ
R1
R3
R4
19
18
R5OUT R5IN
5kΩ
R5
2
7
T1IN
T1OUT
+5V
400kΩ
+5V
6
3
T2IN
T2OUT
T2
400kΩ
20
T3OUT
1
T3IN
+5V
T3
400kΩ
C1+
C1-
1.0μF
12
V
CC
+5V INPUT
11
17
1.0μF
13
1.0μF
+5V TO +10V
VOLTAGE DOUBLER
26
1.0μF
T1
28
21
T4IN
T4OUT
+5V
400kΩ
T4
14
C2+
C2-
15
1.0μF
16
+10V TO -10V
VOLTAGE INVERTER
V+
22
EN (EN)
24
25
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
T4OUT
R3IN
R3OUT
SHDN (SHDN)
R4IN*
C2+
R4OUT*
T4IN
T3IN
R5OUT*
R5IN*
V-
C2-
C1-
V+
C1+
V
CC
GND
R1IN
R1OUT
T1IN
T2IN
R2OUT
R2IN
T2OUT
T1OUT
T3OUT
Wide SO/
SSOP
MAX223
MAX241
EN (EN)
SHDN
(SHDN)
*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN.
NOTE: PIN LABELS IN ( ) ARE FOR MAX241.
V-
+
TOP VIEW
Figure 8. MAX223/MAX241 Pin Configuration and Typical Operating Circuit
Maxim Integrated
19
MAX220–MAX249
MAX220–MAX249