MAX3221CDBR 参数 Datasheet PDF下载

SLLS348M − JUNE 1999 − REVISED MARCH 2004

MAX3221

3 V TO 5.5 V SINGLE CHANNEL RS 232 LINE DRIVER/RECEIVER

WITH

±15

kV ESD PROTECTION

APPLICATION INFORMATION

EN

1

2

3

+

C1

−

+

−

4

5

+

−

C2

6

7

−

+

8

5 kΩ

C4

C2−

V−

C3†

C1+

V+

VCC

16

15

+

Auto-

powerdown

−

14

CBYPASS = 0.1

µF

FORCEOFF

GND

C1−

13

C2+

12

11

10

FORCEON

DIN

INVALID

DOUT

RIN

9

ROUT

† 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.

VCC vs CAPACITOR VALUES

VCC

3.3 V

±

0.3 V

5 V

±

0.5 V

3 V to 5.5 V

C1

0.1

µF

0.047

µF

0.1

µF

C2, C3, and C4

0.1

µF

0.33

µF

0.47

µF

Figure 6. Typical Operating Circuit and Capacitor Values

10

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DALLAS, TEXAS 75265