ADM3483

PRODUCTION

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

Data Sheet (Rev. E) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.39

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Overview

Operate with 3.3 V supply
Interoperable with 5 V logic
EIA RS-485/RS-422 Compliant over Full Common-mode Range
Data Rate Options:250kbps
Half and Full Duplex Options
Reduced Slew Rates for Low EMI

2nA Supply Current in Shutdown Mode
Up to 32 Transceivers on a Bus
-7V to +12V Bus Common Mode Range
Specified over –40°C to +85°C Temperature Range
Available in 8-Lead SOIC

The ADM3483 / ADM3485 / ADM3488 / ADM3490 / ADM3491 are low power, differential line transceivers designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes the ADM3483 / ADM3485 / ADM3488 / ADM3490 / ADM3491 ideal for power-sensitive applications.

The ADM3488 / ADM3490 / ADM3491 feature full-duplex communication, while the ADM3483/ADM3485 are designed for half-duplex communication.

The ADM3483 / ADM3488 feature slew rate limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps.

The ADM3485 / ADM3490 / ADM3491 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 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. If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state. The parts are fully specified over the commercial and industrial temperature ranges. The ADM3483 / ADM3485 / ADM3488 / ADM3490 are available in 8-lead SOIC_N; the ADM3491 is available in a 14-lead SOIC_N.

APPLICATIONS

Low-Power RS-485/RS-422 Applications
Telecom
Industrial Process Control
HVAC

Part Models: 2
1ku List Price: Starting From $1.39

Documentation

Data Sheet 1

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491: 3.3V Slew Rate Limited, Half and Full Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev.E) 11/13/2006

Application Note 3

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

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

AN-1461: Options and Solutions for a High Speed or Low Power Signal and Power Isolated RS-485 Fieldbus 08/06/2025

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
ADM3483ARZ	8-Lead SOIC	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
ADM3483ARZ-REEL7	8-Lead SOIC	Material Declaration Reliability Report 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
ADM3483ARZ	PRODUCTION
ADM3483ARZ-REEL7	PRODUCTION
Nov 23, 2010 - 10_0004 Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor
		PCN10_0004_Form Material_Report ADI0012 Reliability Report
ADM3483ARZ	PRODUCTION
ADM3483ARZ-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

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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.