SN65C23243_06 datasheet(12/17 Pages) TI

Part #	SN65C23243

Description	3-V TO 5.5-V DUAL RS-232 PORT

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Manufacturer	TI [Texas Instruments]

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SN65C23243, SN75C23243

3V TO 5.5V DUAL RS232 PORT

SLLS513A − AUGUST 2001 − REVISED MARCH 2004

12

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

APPLICATION INFORMATION

RIN4

DOUT2

DOUT3

ROUT1

FORCEOFF

RIN5

INV

ROUT2

DOUT1

ROUT2

DIN3

DIN2

ROUT3

ROUT4

DIN1

ROUT5

C4

+

−

+

−

C3†

VCC

C2+

C2−

C1

C1+

GND

V−

C1−

FORCEON

C2

+

−

CBYPASS

= 0.1

µF

V+

+

−

+

−

RIN1

RIN2

RIN3

RS-232 Inputs

Logic Outputs

Logic Inputs

RS-232 Outputs

VCC

C1

C2, C3, and C4

3.3 V

± 0.3 V

5 V

± 0.5 V

3 V to 5.5 V

0.22

µF

0.047

µF

0.22

µF

0.22

µF

0.33

µF

1

µF

† C3 can be connected to VCC or GND.

NOTES: A. Resistor values shown are nominal.

B. Numbers in parentheses are for B section.

VCC vs CAPACITOR VALUES

12

11

5 (20)

4 (21)

3 (22)

2 (23)

1 (24)

9 (16)

8 (17)

7 (18)

42 (31)

41 (32)

40 (33)

38

36

37

14

13, 34

35

39

10 (15)

6 (19)

43 (30)

44 (29)

45 (28)

46 (27)

47 (26)

48 (25)

5 k

Ω

5 k

Ω

5 k

Ω

5 k

Ω

5 k

Ω

Figure 7. Typical Operating Circuit and Capacitor Values

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