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APPLICATION INFORMATION

1

µF

1

µF

2

6

14

7

13

8

C1+

C1−

C2+

C2−

1

3

4

5

11

10

12

9

GND

15

0 V

16

5 V

RS-232 Output

RS-232 Output

RS-232 Input

RS-232 Input

1

µF

8.5 V

−8.5 V

1

µF

From CMOS or TTL

To CMOS or TTL

C1

C2

C4

+

+

−

MAX232E

DUAL RS-232 DRIVER/RECEIVER

WITH IEC61000-4-2 PROTECTION

SLLS723 – APRIL 2006

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. In addition to the 1-

µF capacitors shown, the MAX232E can operate with 0.1-µF capacitors.

Figure 4. Typical Operating Circuit

9

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