MAX3085ECSA+ Maxim Integrated Products, MAX3085ECSA+ Datasheet

MAX3085ECSA+

Manufacturer Part Number

MAX3085ECSA+

Description

IC TXRX RS485/422 10MBPS 8-SOIC

Manufacturer

Maxim Integrated Products

Type

Transceiverr

Datasheets

1.MAX3085ESAT.pdf (20 pages)

2.MAX3083EESD.pdf (20 pages)

Specifications of MAX3085ECSA+

Number Of Drivers/receivers

1/1

Protocol

RS422, RS485

Voltage - Supply

4.75 V ~ 5.25 V

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Data Rate

0.5 Mbps

Operating Supply Voltage

5 V

Supply Current

0.375 mA

Operating Temperature Range

0 C to + 70 C

Maximum Power Dissipation

471 mW

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 20
Download datasheet (625Kb)

19-1138; Rev 3; 12/05

*Pin-compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13.

The MAX3080–MAX3089 high-speed transceivers for

RS-485/RS-422 communication contain one driver and

one receiver. These devices feature fail-safe circuitry,

which guarantees a logic-high receiver output when the

receiver inputs are open or shorted. This means that

the receiver output will be a logic high if all transmitters

on a terminated bus are disabled (high impedance).

The MAX3080/MAX3081/MAX3082 feature reduced

slew-rate drivers that minimize EMI and reduce reflec-

tions caused by improperly terminated cables, allowing

error-free data transmission up to 115kbps. The

MAX3083/MAX3084/MAX3085 offer higher driver out-

put slew-rate limits, allowing transmit speeds up to

500kbps. The MAX3086/MAX3087/MAX3088’s driver

slew rates are not limited, making transmit speeds up

to 10Mbps possible. The MAX3089’s slew rate is

selectable between 115kbps, 500kbps, and 10Mbps

by driving a selector pin with a single three-state driver.

These transceivers typically draw 375µA of supply

current when unloaded, or when fully loaded with the

drivers disabled.

All devices have a 1/8-unit-load receiver input imped-

ance that allows up to 256 transceivers on the bus. The

MAX3082/MAX3085/MAX3088 are intended for half-

duplex communications, while the MAX3080/MAX3081/

MAX3083/MAX3084/MAX3086/MAX3087 are intended

for full-duplex communications. The MAX3089 is selec-

table between half-duplex and full-duplex operation. It

also features independently programmable receiver

and transmitter output phase via separate pins.

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.

MAX3080

MAX3081

MAX3082

MAX3083

MAX3084

MAX3085

MAX3086

MAX3087

MAX3088

MAX3089

Slew-Rate-Limited RS-485/RS-422 Transceivers

Part

Selectable

Half/Full

Duplex

Half

Full

________________________________________________________________ Maxim Integrated Products

General Description

Selectable

(Mbps)

0.115

Data

Rate

0.5

Selectable

Limited

Fail-Safe, High-Speed (10Mbps),

Slew

Rate

Yes

Shutdown

Power

Low-

Yes

Receiver/

Ordering Information continued at end of data sheet.

♦ For Fault-Tolerant Applications:

♦ For Low-Voltage Applications:

♦ For Multiple Transceiver Applications:

Enable

Driver

MAX3080CSD

MAX3080CPD

MAX3080ESD

MAX3080EPD

Yes

MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4-

Unit Load, +3.3V RS-485 Transceiver

MAX3362: +3.3V, High-Speed, RS-485/RS-422

Transceiver in a SOT23 Package

MAX3030E–MAX3033E: ±15kV ESD-Protected,

+3.3V, Quad, RS-422 Transmitters

MAX3040–MAX3045: ±10kV ESD-Protected, Quad,

+5V, RS-485/RS-422 Transmitters

Next Generation Device Features

PART

RS-422/RS-485 Communications

Level Translators

Transceivers for EMI-Sensitive Applications

Industrial-Control Local Area Networks

Quiescent

Current

(µA)

375

-40°C to +85°C

TEMP RANGE

0°C to +70°C

Ordering Information

Transceivers

Bus

256

Selection Table

Applications

Count

14 SO

14 Plastic DIP

14 SO

14 Plastic DIP

PIN-PACKAGE

Industry-

Standard

75180*

Pinout

75180

75179

75176

75180

75179

75176

75180

75179

75176

Related parts for MAX3085ECSA+

MAX3085ECSA+ Summary of contents

Page 1

... MAX3089 Selectable Selectable *Pin-compatible with 75180, with additional features implemented using pins and 13. ________________________________________________________________ Maxim Integrated Products 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. Fail-Safe, High-Speed (10Mbps), Next Generation Device Features ♦ For Fault-Tolerant Applications: MAX3430: ± ...

Page 2

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) ............................................................+7V CC Control Input Voltage (RE, DE)...................-0. Special Input Voltage (H/F, SRL, TXP, RXP)..................................-0. Driver Input Voltage (DI).............................-0. Driver Output Voltage ...

Page 3

Slew-Rate-Limited RS-485/RS-422 Transceivers DC ELECTRICAL CHARACTERISTICS (continued +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL RECEIVER Receiver Differential Threshold V Voltage ∆V Receiver Input ...

Page 4

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX3080–MAX3082, and MAX3089 with SRL = Unconnected (V = +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL t DPLH ...

Page 5

Slew-Rate-Limited RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX3083–MAX3085, and MAX3089 with SRL = +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Driver Input to Output Driver ...

Page 6

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX3086–MAX3088, and MAX3089 with SRL = GND (V = +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL t DPLH ...

Page 7

Slew-Rate-Limited RS-485/RS-422 Transceivers (V = +5V +25°C, unless otherwise noted NO-LOAD SUPPLY CURRENT vs. TEMPERATURE 525 A: MAX3086–MAX3088, MAX3089 WITH 500 SRL = GND 475 450 A 425 DE = GND B ...

Page 8

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers (V = +5V +25°C, unless otherwise noted DRIVER PROPAGATION DELAY (500kbps MODE) vs. TEMPERATURE 920 R = 54Ω 880 t 840 800 760 720 680 640 600 560 520 -60 ...

Page 9

Slew-Rate-Limited RS-485/RS-422 Transceivers (V = +5V +25°C, unless otherwise noted RECEIVER PROPAGATION DELAY MAX3086–MAX3088, AND MAX3089 WITH SRL = GND 50ns/div DRIVER PROPAGATION DELAY MAX3083/MAX3084/MAX3085, AND MAX3089 WITH SRL = ...

Page 10

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers PIN PIN MAX3080 MAX3081 MAX3082 MAX3083 MAX3084 MAX3085 MAX3089 MAX3086 MAX3087 MAX3088 HALF- FULL- FULL-DUPLEX DUPLEX DUPLEX DEVICES DEVICES MODE — — — — — ...

Page 11

Slew-Rate-Limited RS-485/RS-422 Transceivers PIN MAX3080 MAX3081 MAX3082 MAX3083 MAX3084 MAX3085 MAX3086 MAX3087 MAX3088 HALF- FULL- FULL-DUPLEX DUPLEX DUPLEX DEVICES DEVICES MODE 12 8 — 12 — — — — — — 6 — — — — ...

Page 12

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3082/MAX3085/MAX3088 TRANSMITTING INPUTS RECEIVING INPUTS RE DE A-B ≥ -0.05V 0 X ≤ -0. Open/shorted ...

Page 13

Slew-Rate-Limited RS-485/RS-422 Transceivers TOP VIEW TOP VIEW N. N. GND GND 7 8 N.C. DIP/SO Figure 1. ...

Page 14

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers Detailed Description The MAX3080–MAX3089 high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, ...

Page 15

Slew-Rate-Limited RS-485/RS-422 Transceivers Figure 5. Driver DC Test Load The MAX3080 family guarantees a logic-high receiver output when the receiver inputs are shorted or open, or when they are connected to a terminated transmission ...

Page 16

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers DIFF Figure 7. Driver Timing Test Circuit PLH PHL 1 ...

Page 17

Slew-Rate-Limited RS-485/RS-422 Transceivers V ATE ID Figure 13. Receiver Propagation Delay Test Circuit 20dB/div 0Hz 100kHz/div Figure 15. Driver Output Waveform and FFT Plot of MAX3083/MAX3084/MAX3085, and MAX3089 with SRL = V Transmitting a 20kHz Signal CC, components with large ...

Page 18

Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080/MAX3081/MAX3083/ MAX3084/MAX3086/MAX3087/ MAX3089 (FULL DUPLEX 120Ω 120Ω NOTE: RE AND DE ON MAX3080/MAX3083/MAX3086/MAX3089 ONLY. Figure 17. Line Repeater for MAX3080/MAX3081/MAX3083/ MAX3084/MAX3086/MAX3087, and MAX3089 in ...

Page 19

Slew-Rate-Limited RS-485/RS-422 Transceivers 2µs/div Figure 19. MAX3083/MAX3084/MAX3085, and MAX3089 with SRL = V System Differential Voltage at 50kHz Driving 4000 CC, feet of Cable B/ A/ MAX3082 ...

Page 20

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Z ...

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