9 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

9.1 Application Information

For proper operation, add capacitors as shown in Typical Operating Circuit and Capacitor Values.

9.2 Standard Application

ROUT and DIN connect to UART or general purpose logic lines. RIN and DOUT lines connect to a RS232

connector or cable.

11

10

8

1

2

3

4

7

ROUT2

DIN2

9

RIN1

13

12

15

14

DIN1

5

6

+

−

C3

C2+

C1

C2

C1+

GND

C1−

ROUT1

C2−

+

−

V+

+

−

RIN2

C4

+

−

DOUT1

DOUT2

†

V−

5 kΩ

5 kΩ

3.3 V / 5 V

C BYPASS = 0.1 F

μ

† C3 can be connected to VCC or GND.

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.

Figure 9-1. Typical Operating Circuit and Capacitor Values

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MAX3232

SLLS410O – JANUARY 2000 – REVISED JUNE 2021

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