MAX3222CWN Maxim Integrated Products, MAX3222CWN Datasheet

MAX3222CWN

Manufacturer Part Number

MAX3222CWN

Description

SOP18

Manufacturer

Maxim Integrated Products

Datasheets

1.MAX3232EWE.pdf (16 pages)

2.MAX3232EWE.pdf (16 pages)

3.MAX3232CUE.pdf (17 pages)

Specifications of MAX3222CWN

Date_code

10+

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The MAX3222/MAX3232/MAX3237/MAX3241 trans-

ceivers have a proprietary low-dropout transmitter out-

put stage enabling true RS-232 performance from a

3.0V to 5.5V supply with a dual charge pump. The

devices require only four small 0.1µF external charge-

pump capacitors. The MAX3222, MAX3232, and

MAX3241 are guaranteed to run at data rates of

120kbps while maintaining RS-232 output levels. The

MAX3237 is guaranteed to run at data rates of 250kbps

in the normal operating mode and 1Mbps in the

MegaBaud™ operating mode, while maintaining RS-232

output levels.

The MAX3222/MAX3232 have 2 receivers and 2

drivers. The MAX3222 features a 1µA shutdown mode

that reduces power consumption and extends battery

life in portable systems. Its receivers remain active in

shutdown mode, allowing external devices such as

modems to be monitored using only 1µA supply cur-

rent. The MAX3222 and MAX3232 are pin, package,

and functionally compatible with the industry-standard

MAX242 and MAX232, respectively.

The MAX3241 is a complete serial port (3 drivers/

5 receivers) designed for notebook and subnotebook

computers. The MAX3237 (5 drivers/3 receivers) is ideal

for fast modem applications. Both these devices feature

a shutdown mode in which all receivers can remain

active while using only 1µA supply current. Receivers R1

(MAX3237/MAX3241) and R2 (MAX3241) have extra out-

puts in addition to their standard outputs. These extra

outputs are always active, allowing external devices

such as a modem to be monitored without forward bias-

ing the protection diodes in circuitry that may have V

completely removed.

The MAX3222, MAX3237, and MAX3241 are available

in space-saving TSSOP and SSOP packages.

Typical Operating Circuits appear at end of data sheet.

________________________Applications

19-0273; Rev 5; 3/99

MegaBaud is a trademark of Maxim Integrated Products.

*Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

_______________General Description

Transceivers Using Four 0.1µF External Capacitors

3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232

Notebook, Subnotebook, and Palmtop Computers

High-Speed Modems

Battery-Powered Equipment

Hand-Held Equipment

Peripherals

Printers

________________________________________________________________ Maxim Integrated Products

____________________________Features

Ordering Information continued at end of data sheet.

_________________Pin Configurations

______________Ordering Information

MAX3222CUP

MAX3222CAP

MAX3222CWN

MAX3222CPN

Low Supply Current:

Guaranteed Data Rate:

1µA Low-Power Shutdown with Receivers Active

(MAX3222/MAX3237/MAX3241)

Flow-Through Pinout (MAX3237)

Meets EIA/TIA-232 Specifications Down to 3.0V

Guaranteed Mouse Driveability (MAX3241)

Pin Compatible with Industry-Standard MAX232

(MAX3232)

Pin Compatible with Industry-Standard MAX242

(MAX3222)

Guaranteed Slew Rate:

TOP VIEW

300µA (MAX3222/MAX3232/MAX3241)

500µA (MAX3237)

120kbps (MAX3222/MAX3232/MAX3241)

250kbps (MAX3237—Normal Operation)

1Mbps (MAX3237—MegaBaud Operation)

6V/µs (MAX3222/MAX3232/MAX3237/MAX3241)

24V/µs (MAX3237—MegaBaud Operation)

PART

Pin Configurations continued at end of data sheet.

T2OUT

R2IN

C1+

C2+

C2-

C1-

V+

V-

TEMP. RANGE

0°C to +70°C

MAX3222

DIP/SO

20 TSSOP

20 SSOP

18 SO

18 Plastic DIP

PIN-PACKAGE

R1IN

R1OUT

R2OUT

SHDN

GND

T1OUT

T1IN

T2IN

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