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MAX3485EESA+

MAX3485EESA+

Maxim Integrated
Widely used 3.3 V half-duplex RS-485 transceiver with a similar feature set and footprint compatibility for many designs.
NRND7,365 in stock
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Overview

The MAX3485EESA+ is a 3.3V low-power transceiver designed for RS-485 and RS-422 communication. It features enhanced ESD protection and a guaranteed 12Mbps data rate, making it suitable for high-speed differential signaling in robust environments.

Why Choose This Part

This transceiver includes high-level ESD protection up to +/-15kV (HBM) and +/-15kV Air-Gap Discharge per IEC 1000-4-2. It operates from a single 3.3V supply with a very low 2nA shutdown mode, significantly reducing power consumption in battery-powered or heat-sensitive designs.

Applications

Industrial Control Networks
Ideal for linking programmable logic controllers (PLCs) and industrial sensors over long cable runs.
Building Automation
Used in HVAC and lighting control systems that require reliable multi-drop serial communication.
Security Systems
Provides the physical layer for RS-485 based access control panels and PTZ camera telemetry.
EMI-Sensitive Environments
Leverages differential signaling and high ESD tolerance to maintain data integrity in electrically noisy settings.

Key Specifications

Type Transceiver
Duplex Half
Protocol RS422, RS485
Data Rate 12Mbps
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply 3V ~ 3.6V
Receiver Hysteresis 50 mV
Operating Temperature -40degC ~ 85degC
Supplier Device Package 8-SOIC
Number of Drivers/Receivers 1/1

Getting Started

Implement using the industry-standard 75176 pinout on an 8-SOIC footprint. Ensure a 0.1uF bypass capacitor is placed close to the VCC pin and apply 120-ohm termination resistors at the extreme ends of the RS-485 bus to prevent signal reflections.

Also Consider

THVD1429DR TITexas Instruments - Offers higher 20Mbps data rate and enhanced surge protection for even more demanding industrial environments.
ADM3485EARZ Analog Devices - A direct 3.3V alternative with similar ESD ratings and 12Mbps performance in an 8-SOIC package.

Categories

Interface ICs > UART / RS-232 / RS-485 Industrial & Automation > Industrial Communication