1

FEATURES

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

C2+

C2−

V−

RIN1

RIN2

RIN3

RIN4

RIN5

DOUT1

DOUT2

DOUT3

DIN3

DIN2

DIN1

C1+

V+

GND

C1−

FORCEON

FORCEOFF

INVALID

ROUT2B

ROUT1

ROUT2

ROUT3

ROUT4

ROUT5

DB, DW, OR PW PACKAGE

(TOP VIEW)

APPLICATIONS

QFN PACKAGE

(TOP VIEW)

GND

C1–

FORCEON

FORCEOFF

INVALID

ROUTB2

ROUT1

ROUT2

RIN1

RIN2

RIN3

RIN4

RIN5

DOUT1

DOUT2

DOUT3

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

31

32

30

29

28

27

26

25

10

9

11

12

13

14

15

16

MAX3243E

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH ±15-kV IEC ESD PROTECTION

2

• Single-Chip and Single-Supply Interface for

IBM™ PC/AT™ Serial Port

• ESD Protection for RS-232 Bus Pins

–

±15-kV Human-Body Model (HBM)

–

±8-kV IEC61000-4-2, Contact Discharge

–

±15-kV IEC61000-4-2, Air-Gap Discharge

• Meets or Exceeds Requirements of

TIA/EIA-232-F and ITU v.28 Standards

• Operates With 3-V to 5.5-V V

• Always-Active Noninverting Receiver Output

(ROUT2B)

• Designed to Transmit at a Data Rate up to

500 kbit/s

• Low Standby Current . . . 1 µA Typ

• External Capacitors . . . 4 × 0.1 µF

• Accepts 5-V Logic Input With 3.3-V Supply

• Designed to Be Interchangeable With Maxim

MAX3243E

• Serial-Mouse Driveability

• Auto-Powerdown Feature to Disable Driver

Outputs When No Valid RS-232 Signal Is

Sensed

• Package Options Include Plastic Small-Outline

(DW), Shrink Small-Outline (DB), and Thin

Shrink Small-Outline (PW) Packages

• Battery-Powered Systems

• PDAs

• Notebooks

• Laptops

• Palmtop PCs

• Hand-Held Equipment

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

IBM, PC/AT are trademarks of International Business Machines Corporation.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.