1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

R

RE

D

GND1

nc

Vcc2

B

A

nc

GND2

DE

DWPACKAGE

Vcc1

GND1

GND2

GND2

GND1

functiondiagram

D

R

B

A

13

12

DE

6

5

3

4

RE

ISO3082,ISO3088

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

R

RE

D

GND1

Y

Vcc2

B

Z

A

GND2

DE

DWPACKAGE

Vcc1

GND1

GND2

GND2

GND1

DE

5

D

6

R

3

4

RE

Y

Z

B

A

14

11

12

13

functiondiagram

ISO3080,ISO3086

ISO3080, ISO3086

ISO3082, ISO3088

www.ti.com

SLOS581C – MAY 2008 – REVISED OCTOBER 2009

ISOLATED 5-V FULL AND HALF-DUPLEX RS-485 TRANSCEIVERS

Check for Samples: ISO3080, ISO3086 ISO3082, ISO3088

1

FEATURES

APPLICATIONS

•

Security Systems

•

•

Chemical Production

–

UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2),

•

Factory Automation

IEC 61010-1, IEC 60950-1 and CSA

•

Motor/Motion Control

Approved

•

HVAC and Building Automation Networks

•

Bus-Pin ESD Protection

•

Networked Security Stations

–

16 kV HBM Between Bus Pins and GND2

–

6 kV HBM Between Bus Pins and GND1

ISO3080

Full-Duplex

200 kbps

•

1/8 Unit Load – Up to 256 Nodes on a Bus

ISO3086

Full-Duplex

20 Mbps

•

Meets or Exceeds TIA/EIA RS-485

ISO3082

Half-Duplex

200 kbps

Requirements

ISO3088

Half-Duplex

20 Mbps

•

Signaling Rates up to 20 Mbps

•

Thermal Shutdown Protection

•

Low Bus Capacitance – 16 pF (Typ)

•

50 kV/

μs Typical Transient Immunity

•

Fail-safe Receiver for Bus Open, Short, Idle

•

3.3-V Inputs are 5-V Tolerant

DESCRIPTION

The ISO3080, and ISO3086 are isolated full-duplex differential line drivers and receivers while the ISO3082, and

ISO3088 are isolated half-duplex differential line transceivers for TIA/EIA 485/422 applications.

These devices are ideal for long transmission lines since the ground loop is broken to allow for a much larger

common-mode voltage range. The symmetrical isolation barrier of the device is tested to provide 2500 Vrms of

isolation for 60s between the bus-line transceiver and the logic-level interface.

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can

cause damage to the transceiver and/or near-by sensitive circuitry if they are of sufficient magnitude and

duration. These isolated devices can significantly increase protection and reduce the risk of damage to

expensive control circuits.

The ISO3080, SO3082, ISO3086 and ISO3088 are qualified for use from –40°C to 85°C.

1

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2009, 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.