ADM487E
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ADM487E

5 V, ±15 kV ESD Protected, Half Duplex RS-485/RS-422 Transceiver (250 kbps, ¼ Load)

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Part Models 4
1ku List Price Starting From $1.74
Features
  • TIA/EIA RS-485/RS-422 compliant
  • ESD protection on RS-485 I/O pins
  • ±15 kV human body model
  • Data rates: 250 kbps
  • Half-duplex options
  • Reduced slew rates for low EMI
  • −7 V to +12 V common-mode input range
  • Thermal shutdown and short-circuit protection
  • 8-lead SOIC packages
Additional Details
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The ADM485E / ADM487E / ADM1487E are 5 V low power data transceivers with ±15 kV ESD protection suitable for halfduplex communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with TIA/EIA standards RS-485 and RS-422. The ADM487E and the ADM1487E have a 1/4 unit load receiver input impedance that allows up to 128 transceivers on a bus, while the ADM485E allow up to 32 transceivers on a bus. Since only one driver is enabled at any time, the output of a disabled or powerdown driver is three-stated to avoid overloading the bus.

The driver outputs are slew rate-limited in order to reduce EMI and data errors caused by reflections from improperly terminated buses. Excessive power dissipation caused by bus contention or output shorting is prevented with a thermal shutdown circuit. The parts are fully specified over the industrial temperature ranges and are available in 8-lead SOIC packages.

APPLICATIONS

  • Energy/power metering
  • Lighting systems
  • Industrial control
  • Telecommunications
  • Security systems
  • Instrumentation
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file View Data Sheet (Rev.B)
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Part Models 4
1ku List Price Starting From $1.74
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ADM487E

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Data Sheet

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UPDATED 10/28/2010
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ADM485E/ADM487E/ADM1487E: 5 V, 15 kV ESD Protected Half-Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev.B)

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Application Note

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UPDATED 02/07/2014
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AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format redirect icon

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UPDATED 02/07/2014
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AN-1176: 二进制.Bxl文件格式的元件尺寸和符号 redirect icon

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UPDATED 07/09/2020
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AN-960: RS-485/RS-422 Circuit Implementation Guide redirect icon

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UPDATED 07/09/2020
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AN-960：RS-485/RS-422电路实施指南 redirect icon

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UPDATED 07/09/2020
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AN-960: RS-485/RS-422 回路の実装ガイド redirect icon

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Documentation

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Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

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Solving Isolation Challenges in Industrial Automation

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2020-10-28

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADM487EARZ 8-Lead SOIC external-link
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ADM487EARZ-REEL7 8-Lead SOIC external-link
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ADM487EWARZ 8-Lead SOIC external-link
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ADM487EWARZ-REEL7 8-Lead SOIC external-link
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Product Lifecycle

PCN

Oct 23, 2013

- 13_0105

Notification of Qualification of Alternate fab foundry for RS-485/RS-422 Transceiver die at ADI, Limerick, Ireland

ADM487EARZ

PRODUCTION

ADM487EARZ-REEL7

PRODUCTION

pdf

PCN13_0105_Form

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Material_Report

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Qualification Plan Summary

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Package Outline Drawing

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Jul 20, 2012

- 12_0105

Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor

ADM487EARZ

PRODUCTION

ADM487EARZ-REEL7

PRODUCTION

ADM487EWARZ

PRODUCTION

ADM487EWARZ-REEL7

PRODUCTION

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PCN12_0105_Form

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Material_Report

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pdf

Qualification Report Summary

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Feb 3, 2010

- 09_0256

Jiangsu Changjiang Electronics Technology Co. Ltd. (JCET), China as additional assembly and test sub-contractor for Narrow Body SOIC.

ADM487EARZ

PRODUCTION

ADM487EARZ-REEL7

PRODUCTION

Material Set Changes.docx

xls

Material_Report

Download

pdf

PCN09_0256_Form

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Summary of Supporting data.doc

Nov 1, 2014

- 14_0219

RS-485/RS-422 Transceiver products alternate Fabrication foundry at ADI, Limerick, Ireland

ADM487EWARZ

PRODUCTION

ADM487EWARZ-REEL7

PRODUCTION

pdf

PCN14_0219_Form

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Material_Report

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Qualification Results Summary

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Flow Chart

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PCN

Oct 23, 2013

- 13_0105

arrow down

Notification of Qualification of Alternate fab foundry for RS-485/RS-422 Transceiver die at ADI, Limerick, Ireland

ADM487EARZ

PRODUCTION

ADM487EARZ-REEL7

PRODUCTION

pdf

PCN13_0105_Form

external-icon

xls

Material_Report

Download
Qualification Plan Summary

pdf

Package Outline Drawing

external-icon
Jul 20, 2012

- 12_0105

arrow down

Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor

ADM487EARZ

PRODUCTION

ADM487EARZ-REEL7

PRODUCTION

ADM487EWARZ

PRODUCTION

ADM487EWARZ-REEL7

PRODUCTION

pdf

PCN12_0105_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Report Summary

external-icon
Feb 3, 2010

- 09_0256

arrow down

Jiangsu Changjiang Electronics Technology Co. Ltd. (JCET), China as additional assembly and test sub-contractor for Narrow Body SOIC.

ADM487EARZ

PRODUCTION

ADM487EARZ-REEL7

PRODUCTION

Material Set Changes.docx

xls

Material_Report

Download

pdf

PCN09_0256_Form

external-icon
Summary of Supporting data.doc
Nov 1, 2014

- 14_0219

arrow down

RS-485/RS-422 Transceiver products alternate Fabrication foundry at ADI, Limerick, Ireland

ADM487EWARZ

PRODUCTION

ADM487EWARZ-REEL7

PRODUCTION

pdf

PCN14_0219_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

pdf

Flow Chart

external-icon
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-RS485HDEBZ

Standard RS-485 Half-Duplex Evaluation Board, EVAL-RS485HDEBZ

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EVAL-RS485HDEBZ

Standard RS-485 Half-Duplex Evaluation Board, EVAL-RS485HDEBZ

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EVAL-RS485HDEBZ
Standard RS-485 Half-Duplex Evaluation Board, EVAL-RS485HDEBZ
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Product Detail

The EVAL-RS485HDEBZ allows quick and easy evaluation of half-duplex RS-485 transceivers with standard 8-lead SOIC footprints. The evaluation board allows interfacing via screw terminal block to digital I/O for driver input (DI), receiver output (RO), driver enable (DE) and receiver output (RO). Bus signals A and B (half-duplex bus) can be connected to a bus screw terminal block. One or two termination resistors can be connected to A and B via jumper settings, in order to evaluation the half-duplex RS-485 driver and receiver. Footprints are provided for pull-up and pull-down (biasing resistors) on the bus.

Devices for evaluation on the board must be ordered separately.

Resources

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UG-543:Evaluation Boards for Full-Duplex and Half-Duplex RS-485 Transceivers (Rev.A) Download

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Evaluation Kits1

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EVAL-RS485HDEBZ

Standard RS-485 Half-Duplex Evaluation Board, EVAL-RS485HDEBZ

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