ADM3493

PRODUCTION

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

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.22

Viewing:

Overview

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

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.

Part Models: 2
1ku List Price: Starting From $1.22

Documentation

Data Sheet 1

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

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
ADM3493ARZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM3493ARZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	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
		PCN17_0142_Form Material_Report Qualification Results Summary Detailed Change Description
ADM3493ARZ	PRODUCTION
ADM3493ARZ-REEL7	PRODUCTION
Jul 20, 2012 - 12_0105 Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor
		PCN12_0105_Form Material_Report Qualification Report Summary
ADM3493ARZ	PRODUCTION
ADM3493ARZ-REEL7	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
ADM3061E	PRODUCTION	3.0 V to 5.5 V, ±12 kV IEC ESD Protected, Half Duplex 500 kbps RS-485 Transceiver

Evaluation Kits

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

Buy Now View Details

Product Details

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

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

Latest Discussions

2 Years Ago