Datasheet

Typical Operating Circuits (continued)
MAX3237
EN
13
R3OUT
18
R2OUT
20
R1OUT
21
R1OUTB
16
LOGIC
OUTPUTS
5kΩ
5kΩ
5kΩ
* C3 CAN BE RETURNED TO EITHER V
CC
OR GROUND.
R3IN
11
R2IN 9
R1IN
8
RS-232
INPUTS
GND
2
RS-232
OUTPUTS
LOGIC
INPUTS
T3IN
22
T2IN
23
T1IN
24
C2-
3
C2+
1
C1-
25
C1+
28
T3OUT
7
T2OUT 6
T1OUT 5
T1
T2
T3
R1
R2
R3
V-
4
V+
27
V
CC
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
26
MBAUD
15
T5IN
17
T4IN
19
T5OUT
12
T4OUT 10
SHDN
14
T4
T5
MAX3241
EN
23
R5OUT
15
R4OUT
16
R3OUT
17
R2OUT
18
R1OUT
19
R2OUTB
20
R1OUTB
21
TTL/CMOS
OUTPUTS
5kΩ
5kΩ
5kΩ
5kΩ
5kΩ
R5IN 8
* C3 CAN BE RETURNED TO EITHER V
CC
OR GROUND.
R4IN
7
R3IN
6
R2IN 5
R1IN
4
RS-232
INPUTS
SHDN
22
GND
25
RS-232
OUTPUTS
TTL/CMOS
INPUTS
T3IN
12
T2IN
13
T1IN
14
C2-
2
C2+
1
C1-
24
C1+
28
T3OUT
11
T2OUT 10
T1OUT 9
V-
3
V+
27
V
CC
C4
0.1µF
C3
*
0.1µF
0.1µF
0.1µF
0.1µF
+3.3V
26
MAX3222/MAX3232/
MAX3237/MAX3241
3.0V to 5.5V, Low-Power, Up to 1Mbps,
True RS-232 Transceivers
www.maximintegrated.com
Maxim Integrated │ 13