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MAX3243ECDWR中文资料

MAX3243ECDWR中文资料

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MAX3243E

3-V TO 5.5-V MULTICHANNEL RS-232LINE DRIVER/RECEIVER

WITH ±15-kV IEC ESD PROTECTION

SLLS657A–APRIL2005–REVISEDJUNE 2005

FEATURES

MAX3243ECDWR中文资料

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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-Fand ITU v.28Standards Operates With 3-V to 5.5-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

Accepts 5-V Logic Input With 3.3-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

DB, DW, OR PW PACKAGE

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QFN PACKAGE

MAX3243ECDWR中文资料

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D I N D I N D I N N R O U T R O U T DESCRIPTION

The MAX3243E device consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBMand 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-Fand 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 single 3-V to 5.5-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 to 250kbit/sand a maximum of 30-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/ATare trademarks of International Business Machines Corporation.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Copyright ©2005, Texas Instruments Incorporated

R O U T N

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