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MAX3243ECDWR中文资料

MAX3243ECDWR中文资料

http://www.wendangku.net/doc/0b0c3715a300a6c30c229f68.html

FEATURES

MAX3243ECDWR中文资料

DB, DW, OR PW PACKAGE

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QFN PACKAGE

MAX3243ECDWR中文资料

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T N DESCRIPTION

MAX3243E

3-V TO5.5-V MULTICHANNEL RS-232LINE DRIVER/RECEIVER

WITH±15-kV IEC ESD PROTECTION

SLLS657A–APRIL2005–REVISED JUNE2005

•Single-Chip and Single-Supply Interface for

IBM™PC/AT™Serial Port

•ESD Protection for RS-232Bus 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.28Standards

•Operates With3-V to5.5-V V CC Supply

•Always-Active Noninverting Receiver Output

(ROUT2B)

•Designed to Transmit at a Data Rate up to

500kbit/s

•Low Standby Current...1µA Typ

•External Capacitors...4×0.1µF

•Accepts5-V Logic Input With3.3-V Supply

•Designed to Be Interchangeable With Maxim

MAX3243E

•Serial-Mouse Driveability

•Auto-Powerdown Feature to Disable Driver

Outputs When No Valid RS-232Signal Is

Sensed

•Applications

–Battery-Powered Systems,PDAs,

Notebooks,Laptops,Palmtop PCs,and

Hand-Held Equipment

•Package Options Include Plastic

Small-Outline(DW),Shrink Small-Outline

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

Packages

The MAX3243E device consists of three line drivers,five line receivers,and a dual charge-pump circuit with ±15-kV ESD(HBM and IEC61000-4-2,Air-Gap Discharge)and±8-kV ESD(IEC61000-4-2,Contact Discharge) protection on serial-port connection pins.The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector.This combination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT,or compatible.The charge pump and four small external capacitors allow operation from a single3-V to5.5-V supply.In addition,the device includes an always-active noninverting output(ROUT2B),which allows applications using the ring indicator to transmit data while the device is powered down.The device operates at data signaling rates up to250kbit/s and a maximum of30-V/µs driver output slew rate.

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.

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

PRODUCTION DATA information is current as of publication date.Copyright©2005,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.

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