MAX3232

3V TO 5.5V MULTICHANNEL RS232 LINE DRIVER/RECEIVER

WITH ±15kV ESD PROTECTION

SLLS410I − JANUARY 2000 − REVISED JANUARY 2004

7

POST OFFICE BOX 655303

APPLICATION INFORMATION

11

10

8

1

2

3

4

7

ROUT2

DIN2

9

RIN1

16

13

12

15

14

DIN1

5

6

+

−

C3

VCC

C2+

C1

C2

C1+

GND

C1−

ROUT1

C2−

+

−

CBYPASS

= 0.1

µF

V+

+

−

+

−

RIN2

C4

+

−

VCC

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

VCC vs CAPACITOR VALUES

DOUT1

DOUT2

† C3 can be connected to VCC 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 k

Ω

5 k

Ω

Figure 4. Typical Operating Circuit and Capacitor Values