19-0144; Rev. 0; 9/93

_______________General Description

The MAX562 is designed specifically for notebook and

palmtop computers that need to transfer data quickly.

It runs at data rates up to 230kbps, and has a guaran-

teed 4V/µs slew rate. This device meets the new

EIA/TIA-562 standard that guarantees compatibility with

RS-232 interfaces.

The MAX562 has low-power shutdown and keep-awake

modes. In keep-awake mode, the transmitters are dis-

abled but all receivers are active, allowing unidirection-

al communication. In shutdown mode, the entire chip is

disabled and all outputs are in a high-impedance state.

The MAX562 is available in a standard 28-pin SO pack-

age, and in a smaller footprint shrink small-outline

package (SSOP).

________________________Applications

Palmtop, Notebook, and Subnotebook

Computers

Peripherals

Battery-Powered Equipment

____________________________Features

o 230kbps Data Rate, LapLink™ Compatible

o Operates from a 2.7V to 5.25V Supply

o Designed for EIA/TIA-562 and EIA/TIA-232 Applications

o Guaranteed 4.0V/µs Slew Rate

o 3 Drivers, 5 Receivers

o Flow Through Pinout

o Low-Power Shutdown and Keep-Awake Modes

o Low-Cost, Surface-Mount External Capacitors

______________Ordering Information

* Contact factory for dice specifications.

Complete 230kbps, 2.7V to 5.25V

Serial Interface for Notebook Computers

________________________________________________________________

Maxim Integrated Products

1

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

GND

V-

C2+

C2-

SHDN

EN

C1A-

C1B-

C1B+

C1A+

V+

MAX562

SO/SSOP

TOP VIEW

__________________Pin Configuration

T1

T2

T3

R1

R2

R3

R4

R5

5k

5k

5k

5k

5k

GND

19

SHDN

EN

VOLTAGE

DOUBLER/TRIPLER

VOLTAGE

INVERTER

20

21

22

23

16

17

18

26

28

4

53

2

1

25

12

24

11

13

6

7

8

9

10

14

27

15

C2-

C2+

V-

C1A

C1B

C1A+ C1A-

C1B+ C1B-

V+

C3

0.68µF

C4

0.33µF

0.33µF

+2.7V TO

+5.25V

INPUT

0.33µF

0.33µF

0.33µF

CMOS

INPUTS

CMOS

OUTPUTS

EIA/TIA

-562

INPUTS

EIA/TIA

-562

OUTPUTS

C2

MAX562

__________Typical Operating Circuit

Call toll free 1-800-998-8800 for free samples or literature.

PART

TEMP. RANGE

PIN-PACKAGE

MAX562CWI

0°C to +70°C

28 SO

MAX562CAI

0°C to +70°C

28 SSOP

MAX562C/D

0°C to +70°C

Dice*

MAX562EWI

-40°C to +85°C

28 SO

MAX562EAI

-40°C to +85°C

28 SSOP

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