Rainbow-electronics MAX13486E Manual do Utilizador descarregar pdf (Página 1)

General Description

The MAX13485E/MAX13486E +5V, half-duplex, ±15kV

ESD-protected RS-485 transceivers feature one driver

and one receiver. These devices include fail-safe circuitry,

guaranteeing a logic-high receiver output when receiver

inputs are open or shorted. The receiver outputs a logic-

high if all transmitters on a terminated bus are disabled

(high impedance). The MAX13485E/MAX13486E include

a hot-swap capability to eliminate false transitions on the

bus during power-up or live-insertion.

The MAX13485E features reduced slew-rate drivers

that minimize EMI and reduce reflections caused by

improperly terminated cables, allowing error-free trans-

mission up to 500kbps. The MAX13486E driver slew

rate is not limited, allowing transmit speeds up to

16Mbps.

The MAX13485E/MAX13486E feature a 1/4-unit load

receiver input impedance, allowing up to 128 transceivers

on the bus. These devices are intended for half-duplex

communications. All driver outputs are protected to ±15kV

ESD using the Human Body Model. The MAX13485E/

MAX13486E are available in 8-pin SO and space-saving

8-pin µDFN packages. The devices operate over the

extended -40°C to +85°C temperature range.

Applications

Utility Meters

Industrial Controls

Industrial Motor Drives

Automated HVAC Systems

Features

♦ +5V Operation

♦ True Fail-Safe Receiver While Maintaining

EIA/TIA-485 Compatibility

♦ Hot-Swappable for Telecom Applications

♦ Enhanced Slew-Rate Limiting Facilitates Error-

Free Data Transmission (MAX13485E)

♦ High-Speed Version (MAX13488E) Allows for

Transmission Speeds Up to 16Mbps

♦ Extended ESD Protection for RS-485/RS-422 I/O

Pins ±15kV Using Human Body Model

♦ 1/4 Unit Load, Allowing Up to 128 Transceivers on

the Bus

♦ Available in Space-Saving 8-Pin µDFN or Industry

Standard 8-Pin SO Packages

MAX13485E/MAX13486E

Half-Duplex RS-485/RS-422 Transceivers in µDFN

________________________________________________________________ Maxim Integrated Products 1

19-0742; Rev 0; 1/07

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information/

Selector Guide

PART

PIN-

PACKAGE

SLEW-RATE

LIMITED

PKG

CODE

MAX13485EELA+T

8 µDFN Yes

L822-1

MAX13485EESA+ 8 SO Yes S8-2

MAX13486EELA+T

8 µDFN No

L822-1

MAX13486EESA+ 8 SO No S8-2

+Denotes a lead-free package.

Note: All devices are specified over the -40°C to +85°C operating

temperature range.

123

A GNDB

RO DIDERE

MAX13485E

MAX13486E

DFN

GNDDI

BRE

TOP VIEW

GND

0.1µF

MAX13485E

MAX13486E

Pin Configurations

1 2 3 4 5 6 ... 15 16

MAX13485E/MAX13486E 1
6, 8, 10L UDFN.EPS 16

Resumo do Conteúdo

Página 1 - MAX13485E/MAX13486E

General DescriptionThe MAX13485E/MAX13486E +5V, half-duplex, ±15kVESD-protected RS-485 transceivers feature one driverand one receiver. These devices

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MAX13485E/MAX13486EHalf-Duplex RS-485/RS-422 Transceivers in µDFN 10 ______________________________________________________________________Pin Descrip

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MAX13485E/MAX13486EHalf-Duplex RS-485/RS-422 Transceivers in µDFN __________________________________________________________________________+1V-1VGENE

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MAX13485E/MAX13486EDetailed DescriptionThe MAX13485E/MAX13486E half-duplex, high-speedtransceivers for RS-485/RS-422 communication containone driver a

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+15V ESD ProtectionAs with all Maxim devices, ESD-protection structuresare incorporated on all pins to protect against electro-static discharges encou

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MAX13485E/MAX13486Ewithstand voltage measured to IEC 61000-4-2 is gener-ally lower than that measured using the Human BodyModel. Figure 10c shows the

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