MAX491EPD - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number

MAX491EPD

Manufacturer

Analog Devices

Introduction

The MAX491EPD is a robust RS422/RS485 full-duplex transceiver from Analog Devices, designed for interfacing with communication bus systems in industrial, network, and telecom applications.

Product Features and Performance

Full-duplex RS422/RS485 transceiver

70 mV receiver hysteresis for enhanced noise immunity

Data rates up to 2.5Mbps for high-speed communication

Operates from a single 5V supply

Thermal shutdown and short-circuit protection

Integrated receiver fail-safe ensures a logic-high receiver output when inputs are open

Product Advantages

Increased reliability in communication systems

Resilient to electrical noise

Suitable for high-speed data transmission

Energy-efficient design

Built-in safety features to prevent device damage

Key Technical Parameters

Data Rate: 2.5Mbps

Voltage - Supply: 4.75V to 5.25V

Number of Drivers/Receivers: 1/1

Operating Temperature Range: -40°C to 85°C

Receiver Hysteresis: 70 mV

Quality and Safety Features

Over-temperature protection

ESD protection on RS485 input/output pins

Short-circuit protection on driver outputs

Fail-safe receiver for open, short, or idle bus conditions

Compatibility

Compatible with RS422 and RS485 protocols

Application Areas

Industrial control systems

Building automation

Networking equipment

Data communication systems

Product Lifecycle

Active

Current model with ongoing manufacturer support

Several Key Reasons to Choose This Product

High data integrity in electrically noisy environments

Suitable for long-distance and fast communication needs

Low-power consumption for energy-efficient designs

Robust safety features ensure long-term reliability

Wide operating temperature range for use in harsh industrial conditions