MAX3232EEAE+中文资料

19-1298; Rev 11; 10/07

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

General Description

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

communications interface devices feature low power con-MAX3228E/MAX3229E: ±15kV ESD-Protected, sumption, high data-rate capabilities, and enhanced+2.5V to +5.5V, RS-232 Transceivers in UCSPelectrostatic-discharge (ESD) protection. The enhancedESD structure protects all transmitter outputs and For Low-Voltage or Data Cable Applications

receiver inputs to ±15kV using IEC 1000-4-2 Air-GMAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, Discharge, ±8kV using IEC 1000-4-2 Contact Dischargeap2Tx/2Rx, RS-232 Transceivers with ±15kV (±9kV for MAX3246E), and ±15kV using the Human BodyESD-Protected I/O and Logic Pins

Model. The logic and receiver I/O pins of the MAX3237Eare protected to the above standards, while the transmit-ter output pins are protected to ±15kV using the HumanBody Model.

A proprietary low-dropout transmitter output stage deliverstrue RS-232 performance from a +3.0V to +5.5V powersupply, using an internal dual charge pump. The chargepump requires only four small 0.1µF capacitors for opera-tion from a +3.3V supply. Each device guarantees opera-tion at data rates of 250kbps while maintaining RS-232output levels. The MAX3237E guarantees operation at250kbps in the normal operating mode and 1Mbps in theMegaBaud operating mode, while maintaining RS-232-compliant output levels.

The MAX3222E/MAX3232E have two receivers and twotransmitters. The MAX3222E features a 1µA shutdownmode that reduces power consumption in battery-pow-ered portable systems. The MAX3222E receivers remainactive in shutdown mode, allowing monitoring of externaldevices while consuming only 1µA of supply current. TheMAX3222E and MAX3232E are pin, package, and func-tionally compatible with the industry-standard MAX242and MAX232, respectively.

The MAX3241E/MAX3246E are complete serial ports(three drivers/five receivers) designed for notebook andsubnotebook computers. The MAX3237E (five drivers/three receivers) is ideal for peripheral applications thatrequire fast data transfer. These devices feature a shut-down mode in which all receivers remain active, whileconsuming only 1µA (MAX3241E/MAX3246E) or 10nA*Dice are tested at TA= +25°C, DC parameters only.(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 OperatingCircuits appear at end of data sheet.

Battery-Powered EquipmentPrinters

MegaBaud and UCSPare trademarks of Maxim IntegratedCell Phones

Smart PhonesProducts, Inc.

Cell-Phone Data CablesxDSL Modems

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

Notebook, Subnotebook,4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; andand Palmtop Computers

other patents pending.

________________________________________________________________Maxim Integrated Products1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim's website at doc.xuehai.net.

MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E

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