ADM3491E

PRODUCTION

3.3 V, ±15 kV ESD-Protected, RS-485/RS-422 Transceiver (Full Duplex, 12Mbps, DE/RE)

Data Sheet (Rev. A) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.56

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Part Details

TIA/EIA RS-485/RS-422 compliant
±15 kV ESD-protection on RS-485 input/output pins
Data rates - ADM3490E / ADM3491E: 12 Mbps
Full duplex
32 nodes on the bus
Receiver open-circuit, fail-safe design

Low power shutdown current (ADM3483E / ADM3486E / ADM3491E only)
Outputs high-Z when disabled or powered off
−7 V to +12 V common-mode input range
Thermal shutdown and short-circuit protection
Industry-standard 75176 pinout
14-lead SOIC package

Part Models: 2
1ku List Price: Starting From $1.56

Documentation

Data Sheet 1

ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E: 3.3 V, ±15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev.A) 12/02/2010

Application Note 2

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

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

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
ADM3491EARZ	14-Lead SOIC	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADM3491EARZ-REEL7	14-Lead SOIC	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 5, 2010 - 10_0146 Halogen Free Material Change for 14/16L SOIC_N Products
		PCN10_0146_Form Material_Report AEC-Q100 Reliability Report ADI0012 Reliability Report
ADM3491EARZ	PRODUCTION
ADM3491EARZ-REEL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

IBIS Model 1

ADM3491E IBIS Model

Evaluation Kits

Standard RS-485 Full-Duplex (14-lead SOIC) Evaluation Board, EVAL-RS485FDEBZ

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Product Details

The EVAL-RS485FDEBZ allows quick and easy evaluation of full-duplex RS-485 transceivers with standard 14-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, B, Y and Z (full-duplex bus) can be connected to a bus screw terminal block. Termination resistors are fitted across A and B, as well as Y and Z. These can be connected in half-duplex configuration (A to Y, B to Z), in order to evaluate the RS-485 driver. Footprints are provided for pull-up and pull-down (biasing resistors) on the receiver inputs in order to provide the option to evaluate an RS-485 receiver with this configuration.

Devices for evaluation on the board must be ordered separately.

Resources

UG-543:Evaluation Boards for Full-Duplex and Half-Duplex RS-485 Transceivers (Rev.A)
4/19/2013

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