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APPLICATION INFORMATION

C1

C2, C3, and C4

3.3 V

± 0.15 V

3.3 V

± 0.3 V

5 V

± 0.5 V

3 V to 5.5 V

0.1

µF

0.22

µF

0.047

µF

0.22

µF

0.1

µF

0.22

µF

0.33

µF

1

µF

+

−

+

−

+

−

+

−

+

−

4

5

6

7

8

9

10

11

12

13

14

3

1

2

28

27

26

24

25

23

22

21

20

19

18

17

16

15

C2

C1

C4

C2+

GND

C2−

V−

C1+

V+

C1−

DIN1

DIN2

DIN3

ROUT1

ROUT2

DIN4

ROUT3

DIN5

ROUT1B

MBAUD

DOUT1

DOUT2

DOUT3

RIN1

RIN2

DOUT4

RIN3

DOUT5

EN

SHDN

5 k

Ω

5 k

Ω

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.

Logic I/Os

RS-232 Port

5 k

Ω

TRS3237E

3-V TO 5.5-V MULTICHANNEL RS-232

1-MBit/s LINE DRIVER/RECEIVER

SLLS796 – JUNE 2007

Figure 5. Typical Operating Circuit and Capacitor Values

9

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