ADM3493
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ADM3493

3.3 V, ⅛ Load, Low Power, RS-485/RS-422 Transceiver (Half Duplex, 250 kbps, Slew Rate Limited, DE/RE)

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1ku List Price Starting From $1.22
Features
  • Operates with 3.3 V Supply
  • Interoperable with 5 V Logic
  • EIA RS-422 and RS-485 Compliant over Full CM Range
  • Data Rate: 250 kbps
  • Half Duplex Transceiver
  • Reduced Slew Rates for Low EMI
  • 2 nA Supply Current in Shutdown Mode
  • Up to 256 Transceivers on a Bus
  • −7 V to +12 V Bus Common-mode Range
  • Specified over −40°C to +85°C Temperature Range
  • 8 ns Skew
  • Available in 8-lead SOIC
Additional Details
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The ADM3493 is a low power, differential line transceiver designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes it ideal for power-sensitive applications. The ADM3493 is suitable for communication on multipoint bus transmission lines.

The device contains one driver and one receiver. Designed for half-duplex communication, the ADM3493 features a slew rate limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps.

The receiver input impedance is 96 kΩ, allowing up to 256 transceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions then the thermal shutdown circuit forces the driver output into a high impedance state. The receiver contains a fail-safe feature that results in a logic high output state, if the inputs are unconnected (floating).

The ADM3493 is fully specified over the commercial and industrial temperature ranges and is available in an 8-lead SOIC.

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ADM3493

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Data Sheet

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UPDATED 12/10/2010
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ADM3493: 3.3 V Slew Rate Limited, Half Duplex RS-485/RS-422 Transceiver Data Sheet (Rev.0)

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Application Note

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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 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 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

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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Protect your Innovations: from High Precision to High Power

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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
ADM3493ARZ 8-Lead SOIC external-link
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ADM3493ARZ-REEL7 8-Lead SOIC external-link
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Product Lifecycle

PCN

Nov 8, 2017

- 17_0142

ADM3483, ADM3485, ADM3488, ADM3490, ADM3491 and ADM3493 Low Power, RS-485/RS-422 Transceiver Product Alternate Fabrication Foundry

ADM3493ARZ

PRODUCTION

ADM3493ARZ-REEL7

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PCN17_0142_Form

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Material_Report

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Qualification Results Summary

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Detailed Change Description

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Jul 20, 2012

- 12_0105

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

ADM3493ARZ

PRODUCTION

ADM3493ARZ-REEL7

PRODUCTION

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PCN12_0105_Form

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PCN

Nov 8, 2017

- 17_0142

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ADM3483, ADM3485, ADM3488, ADM3490, ADM3491 and ADM3493 Low Power, RS-485/RS-422 Transceiver Product Alternate Fabrication Foundry

ADM3493ARZ

PRODUCTION

ADM3493ARZ-REEL7

PRODUCTION

pdf

PCN17_0142_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

pdf

Detailed Change Description

external-icon
Jul 20, 2012

- 12_0105

arrow down

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

ADM3493ARZ

PRODUCTION

ADM3493ARZ-REEL7

PRODUCTION

pdf

PCN12_0105_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Report Summary

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Software & Part Ecosystem

Parts Product Life Cycle Description
ADM3061E
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PRODUCTION

3.0 V to 5.5 V, ±12 kV IEC ESD Protected, Half Duplex 500 kbps RS-485 Transceiver

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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