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APPLICATION INFORMATION
11
10
8
1
2
3
4
7
ROUT2
DIN2
9
RIN1
16
13
12
15
14
DIN1
5
6
+
−
C3
V
CC
C2+
C1
C2
C1+
GND
C1−
ROUT1
C2−
+
−
C
BYPASS
= 0.1µF
V+
+
−
+
−
RIN2
C4
+
−
V
CC
C1
C2, C3, C4
3.3 V ± 0.3 V
5 V ± 0.5 V
3 V to 5.5 V
0.1 µF
0.047 µF
0.1 µF
0.1 µF
0.33 µF
0.47 µF
V
CC
vs CAPACITOR VALUES
DOUT1
DOUT2
†
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.
†
V−
5 kΩ
5 kΩ
MAX3232E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV IEC ESD PROTECTION
SLLS664A – AUGUST 2005 – REVISED APRIL 2007
Figure 4. Typical Operating Circuit and Capacitor Values
7
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