+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
TOP VIEW
1.0µF
12
V
CC
+5V
400kΩ
T1
T1
8
3
OUT
IN
T1
+5V
+5V
+5V
+5V
400kΩ
400kΩ
400kΩ
400kΩ
T2
T2
T3
T4
OUT
7
15
16
4
IN
IN
IN
IN
T2
T3
T4
T3
2
1
TTL/CMOS
INPUTS
OUT
RS-232
OUTPUTS
T4
T3
T1
T2
1
2
3
4
5
6
7
8
9
24 R3
23 R3
OUT
OUT
OUT
OUT
IN
OUT
IN
T4
OUT
OUT
22 T5
21 SHDN
20 EN
MAX235
R2
IN
T5
22 T5
19
10
T5
T1
R2
19 T5
18 R4
17 R4
OUT
OUT
IN
T2
IN
IN
R1
9
R1
IN
IN
OUT
T1
OUT
IN
5kΩ
R1
16 T4
15 T3
14 R5
13 R5
OUT
R1 10
IN
IN
R2
5kΩ
R3 24
5
R2
R3
R4
6
OUT
OUT
OUT
OUT
R2
GND 11
OUT
IN
V
12
CC
23
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R3
R4
DIP
5kΩ
R4
18
17
IN
5kΩ
R5
R5
13
21
14
20
IN
R5
5kΩ
SHDN
EN
GND
11
Figure 13. MAX235 Pin Configuration and Typical Operating Circuit
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
