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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

C2+

C1

C2

C1+

GND

C1−

ROUT1

C2−

+

−

= 0.1

µF

V+

+

−

+

−

RIN2

C4

+

−

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

DOUT1

DOUT2

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 k

Ω

5 k

Ω

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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