MAXIM INTEGRATED PRODUCTS MAX3222E MAX3232E MAX3237E MAX3241E† MAX3246E ±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers

19-1298; Rev 11; 10/07

±15k V ESD-Protected, Down to 10n A, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers General Description Next-Generation Device Features

The MAX3222E/MAX3232E/MAX3237E/MAX3241E/ For Space-Constrained Applications MAX3246E +3.0V-powered EIA/TIA-232 and V.28/V.24

MAX3228E/MAX3229E: ±15k V ESD-Protected,

communications interface devices feature low power con-

+2.5V to +5.5V, RS-232 Transceivers in UCSP

sumption, high data-rate capabilities, and enhanced

electrostatic-discharge (ESD) protection. The enhanced For Low-Voltage or Data Cable Applications

ESD structure protects all transmitter outputs and MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, receiver inputs to ±15k V using IEC 1000-4-2 Air-Gap

2Tx/2Rx, RS-232 Transceivers with ±15k V

Discharge, ±8k V using IEC 1000-4-2 Contact Discharge

ESD-Protected I/O and Logic Pins

(±9k V for MAX3246E), and ±15k V using the Human Body Model. The logic and receiver I/O pins of the MAX3237E are protected to the above standards, while the transmit- ter output pins are protected to ±15k V using the Human _______________Ordering Information Body Model.

PIN- PKG

A proprietary low-dropout transmitter output stage delivers PART TEMP RANGE

PACKAGE CODE

true RS-232 performance from a +3.0V to +5.5V power supply, using an internal dual charge pump. The charge 20 Thin QFN- pump requires only four small 0.1µF capacitors for opera- MAX3222ECTP 0°C to +70°C EP** (5mm x T2055-5 tion from a +3.3V supply. Each device guarantees opera-

tion at data rates of 250kbps while maintaining RS-232

MAX3222ECUP 0°C to +70°C 20 TSSOP

output levels. The MAX3237E guarantees operation at

250kbps in the normal operating mode and 1Mbps in the MAX3222ECAP 0°C to +70°C 20 SSOP

Mega Baud™ operating mode, while maintaining RS-232- MAX3222ECWN 0°C to +70°C 18 Wide SO compliant output levels.

MAX3222ECPN 0°C to +70°C 18 Plastic DIP

The MAX3222E/MAX3232E have two receivers and two

MAX3222EC/D 0°C to +70°C Dice*

transmitters. The MAX3222E features a 1µA shutdown

mode that reduces power consumption in battery-pow- 20 Thin QFN- ered portable systems. The MAX3222E receivers remain MAX3222EETP -40°C to +85°C EP** (5mm x T2055-5 active in shutdown mode, allowing monitoring of external 5mm)

devices while consuming only 1µA of supply current. The

MAX3222EEUP -40°C to +85°C 20 TSSOP

MAX3222E and MAX3232E are pin, package, and func-

MAX3222EEAP -40°C to +85°C 20 SSOP

tionally compatible with the industry-standard MAX242 and MAX232, respectively. MAX3222EEWN -40°C to +85°C 18 Wide SO

The MAX3241E/MAX3246E are complete serial ports MAX3222EEPN -40°C to +85°C 18 Plastic DIP

(three drivers/five receivers) designed for notebook and

MAX3232ECAE 0°C to +70°C 16 SSOP

subnotebook computers. The MAX3237E (five drivers/

MAX3232ECWE 0°C to +70°C 16 Wide SO

three receivers) is ideal for peripheral applications that require fast data transfer. These devices feature a shut- MAX3232ECPE 0°C to +70°C 16 Plastic DIP down mode in which all receivers remain active, while

*Dice are tested at TA = +25°C, DC parameters only.

consuming only 1µA (MAX3241E/MAX3246E) or 10n A

(MAX3237E). **EP = Exposed paddle.

The MAX3222E, MAX3232E, and MAX3241E are avail- able in space-saving SO, SSOP, TQFN and TSSOP pack-

ages. The MAX3237E is offered in an SSOP package. Ordering Information continued at end of data sheet.

The MAX3246E is offered in the ultra-small 6 x 6 UCSP™ package.

Pin Configurations, Selector Guide, and Typical Operating Circuits appear at end of data sheet.

Applications

Battery-Powered Equipment Printers Mega Baud and UCSP are trademarks of Maxim Integrated Products, Inc.

Cell Phones Smart Phones

†Covered by U.S. Patent numbers 4,636,930; 4,679,134;

Cell-Phone Data Cables x DSL Modems

4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and

Notebook, Subnotebook,

other patents pending.

and Palmtop Computers

Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.