Datasheet

+5V-Powered, Multichannel RS-232
Drivers/Receivers
2
1
5
18
T2IN
T1IN
T1OUT
T2OUT
+5V INPUT
RS-232
INPUTS
TTL/CMOS
OUTPUTS
GND GND
69
400kΩ
+5V
400kΩ
+5V
5kΩ
5kΩ
7
20
3
4
R1IN
R2IN
R2OUT
R1OUT
19
RS-232
OUTPUTS
TTL/CMOS
INPUTS
V
CC
PIN NAMES IN ( ) ARE FOR SO PACKAGE.
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
R2IN
T2OUT
V-
R1IN
R1OUT
T1IN
C2-
C2+
V+ (C1-)
C1- (C1+)
(V+) C1+
V
CC
GND
T1OUT
12
11
9
10
V- (C2+)
C2+ (C2-)
(V-) CS-
GND
DIP/SO
MAX233
MAX233A
T2IN R2OUT
C1+
C1-
V-
V-
V+
C2+
C2-
CS-
C2+
8 (13)
13 (14)
12 (10)
17
14 (8)
11 (12)
15
16
10 (11)
DO NOT MAKE
CONNECTIONS TO
THESE PINS
INTERNAL -10V
POWER SUPPLY
INTERNAL +10V
POWER SUPPLY
1.0μF
TOP VIEW
+
Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
T3OUT
T4OUT
T4IN
T3IN
T1IN
T2IN
T2OUT
T1OUT
MAX234
V-
C2-
C2+
C1-
V+
C1+
V
CC
GND
DIP/SO
V+
V-
8
C1+
C1-
1.0μF
1.0μF
1.0μF
7
9
10
11
4
3
13
14
12
1
2
16
15
T1IN
T3IN
T2IN
T4IN
T1OUT
T3OUT
T2OUT
T4OUT
+5V INPUT
C2-
C2+
RS-232
OUTPUTS
TTL/CMOS
INPUTS
GND
5
+5V
+5V
+10V TO -10V
VOLTAGE INVERTER
V
CC
+5V TO +10V
VOLTAGE DOUBLER
6
+5V
+5V
400kΩ
400kΩ
400kΩ
400kΩ
1.0μF
1.0μF
T1
T2
T4
T3
+
TOP VIEW
Figure 12. MAX234 Pin Configuration and Typical Operating Circuit
Maxim Integrated
21
MAX220–MAX249
MAX220–MAX249