Rainbow-electronics MAX3295 User Manual download pdf (Page 1)

General Description

The MAX3293/MAX3294/MAX3295 low-power, high-

speed transmitters for RS-485/RS-422 communication

operate from a single +3.3V power supply. These

devices contain one differential transmitter. The

MAX3295 transmitter operates at data rates up to

20Mbps, with an output skew of less than 5ns, and a

guaranteed driver propagation delay below 25ns. The

MAX3293 (250kbps) and MAX3294 (2.5Mbps) are

slew-rate limited to minimize EMI and reduce reflections

caused by improperly terminated cables.

The MAX3293/MAX3294/MAX3295 output level is guar-

anteed at +1.5V with a standard 54Ω load, compliant

with RS-485 specifications. The transmitter draws 5mA

of supply current when unloaded, and 1µA in low-

power shutdown mode (DE = GND).

Hot-swap circuitry eliminates false transitions on the data

cable during circuit initialization or connection to a live

backplane, and short-circuit current limiting and thermal-

shutdown circuitry protect the driver against excessive

power dissipation.

The MAX3293/MAX3294/MAX3295 are offered in a

6-pin SOT23 package, and are specified over the

automotive temperature range.

Applications

RS-485/RS-422 Communications

Clock Distribution

Telecom Equipment

Automotive

Security Equipment

Point-of-Sale Equipment

Industrial Control

Features

♦ Space-Saving 6-Pin SOT23 Package

♦ 250kbps/2.5Mbps/20Mbps Data Rates Available

♦ Operate from a Single +3.3V Supply

♦ ESD Protection

±9kV—Human Body Model

♦ Slew-Rate Limited for Errorless Data

Transmission (MAX3293/MAX3294)

♦ 1µA Low-Current Shutdown Mode

♦ -7V to +12V Common-Mode Input Voltage Range

♦ Current Limiting and Thermal Shutdown for

Driver-Overload Protection

♦ Hot-Swap Inputs for Telecom Applications

♦ Automotive Temperature Range (-40°C to +125°C)

MAX3293/MAX3294/MAX3295

20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

________________________________________________________________ Maxim Integrated Products 1

Selector Guide

Ordering Information

19-2770; Rev 0; 2/03

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.

PART TEMP RANGE

PIN-

PACKAGE

MAX3293AUT-T -40°C to +125°C 6 SOT23-6

MAX3294AUT-T -40°C to +125°C 6 SOT23-6

MAX3295AUT-T -40°C to +125°C 6 SOT23-6

PART

MAXIMUM

DATA RATE

(Mbps)

SLEW-RATE

LIMITED

TOP

MARK

MAX3293AUT-T 0.25 Yes ABNI

MAX3294AUT-T 2.5 Yes ABNJ

MAX3295AUT-T 20 No ABNK

Typical Operating Circuit

MAX3293

MAX3294

MAX3295

MAX3280E

MAX3281E

MAX3283E

MAX3284E

120Ω

ZDE

16Y

5 GND

MAX3293

MAX3294

MAX3295

SOT23-6

TOP VIEW

Pin Configuration

1 2 3 4 5 6 ... 10 11

Summary of Contents

Page 1 - RS-422 Transmitters

General DescriptionThe MAX3293/MAX3294/MAX3295 low-power, high-speed transmitters for RS-485/RS-422 communicationoperate from a single +3.3V power sup

Page 2

Reduced EMI and Reflections(MAX3293/MAX3294)The MAX3293/MAX3294 are slew-rate limited, minimiz-ing EMI and reducing reflections caused by improperlyte

Page 3

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 TransmittersMaxim cannot assume responsibility for use of any circuitry other than circuitry

Page 4

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters2 ______________________________________________________________________________

Page 5

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters________________________________________________________________________________

Page 6

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters4 ______________________________________________________________________________

Page 7

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters________________________________________________________________________________

Page 8

010203040MAX3293-95 toc09TEMPERATURE (°C)PROPAGATION DELAY (ns)-40 20 50 80-10 110DRIVER PROPAGATION DELAYvs. TEMPERATUREtPHLtPLHRDIFF = 54ΩCL = 50pF0

Page 9

DRIVER PROPAGATION DELAYMAX3293-95 toc1020ns/divY, Z: 1V/divDI: 2V/divDI0V0VY, ZTypical Operating Characteristics (continued)(VCC= +3.3V, TA = +25°C,

Page 10

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters8 ______________________________________________________________________________

Page 11

MAX3293/MAX3294/MAX329520Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters________________________________________________________________________________

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Rainbow-electronics MAX3295 User Manual Page 1

Browse online or download User Manual for Control panel Rainbow-electronics MAX3295. Rainbow Electronics MAX3295 User Manual

Summary of Contents

Comments to this Manuals

Rainbow-electronics MAX3295 User Manual Page 1

Browse online or download User Manual for Control panel Rainbow-electronics MAX3295. Rainbow Electronics MAX3295 User Manual

Summary of Contents

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