Datasheet

V
CC
C1 C2, C3, and C4
3.3 V ± 0.15 V
3.3 V ± 0.3 V
5 V ± 0.5 V
3 V to 5.5 V
0.1 µF
0.22 µF
0.047 µF
0.22 µF
0.1 µF
0.22 µF
0.33 µF
1 µF
V
CC
vs CAPACITOR VALUES
+
−
+
−
+
−
+
−
+
−
4
5
6
7
8
9
10
11
12
13
14
3
1
2
28
27
26
24
25
23
22
21
20
19
18
17
16
15
C2
C
BYPASS
= 0.1 µF
C1
C4
C2+
GND
C2−
V−
C1+
V+
V
CC
C1−
DIN1
DIN2
DIN3
ROUT1
ROUT2
DIN4
ROUT3
DIN5
ROUT1B
MBAUD
DOUT1
DOUT2
DOUT3
RIN1
RIN2
DOUT4
RIN3
DOUT5
EN
SHDN
5 kΩ
5 kΩ
†
C3 can be connected to V
CC
or GND.
NOTES: A. Resistor values shown are nominal.
B. Nonpolarized ceramic capacitors are acceptable. If polarized tantalum or
electrolytic capacitors are used, they should be connected as shown.
C3
†
Logic I/Os
RS-232 Port
5 kΩ
MAX3237E
www.ti.com SLLS709B –MAY 2006–REVISED JANUARY 2010
APPLICATION INFORMATION
Figure 5. Typical Operating Circuit and Capacitor Values
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