MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
TOP VIEW
1.0μF
11
1.0μF
1.0μF
12
V
C1+
CC
13
17
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0μF
1.0μF
14
15
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
16
C2-
+5V
400kΩ
T1OUT
T2OUT
T1IN
+5V
7
2
3
1
T1
+
T3OUT
1
2
3
4
5
6
7
8
9
28 T4OUT
27 R3IN
400kΩ
T1OUT
T2OUT
R2IN
6
T2IN
+5V
T2
26 R3OUT
25 SHDN (SHDN)
24 EN (EN)
23 R4IN*
22 R4OUT*
21 T4IN
RS-232
OUTPUTS
TTL/CMOS
INPUTS
400kΩ
R2OUT
T2IN
MAX223
MAX241
T3OUT
T3IN
20
T3
+5V
T1IN
400kΩ
R1OUT
R1IN
T4OUT
R1IN
T4IN
21
8
28
9
T4
20 T3IN
GND 10
11
19 R5OUT*
18 R5IN*
17 V-
R1OUT
R1
R2
V
CC
5kΩ
R2IN
C1+ 12
V+ 13
16 C2-
R2OUT
R3OUT
5
4
C1- 14
15 C2+
5kΩ
Wide SO/
SSOP
26
R3IN 27
5kΩ
RS-232
INPUTS
LOGIC
OUTPUTS
R3
R4
R5
22 R4OUT
R4IN
23
5kΩ
R5OUT
R5IN
19
24
18
25
*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN.
5kΩ
SHDN
(SHDN)
NOTE: PIN LABELS IN ( ) ARE FOR MAX241.
EN (EN)
GND
10
ꢁigure 8. MAX223/MAX24± Pin Configuration and Typical Operating Circuit
Maxim Integrated
19
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
