MAX487 Slew-Rate-Limited RS-485/RS-422 Transceiver

Product Overview

The MAX487 Slew-Rate-Limited RS-485/RS-422 Transceiver is a low-power, half-duplex transceiver designed for RS-485 and RS-422 communication in industrial and long-distance data transmission applications. Featuring slew-rate limiting, it minimizes electromagnetic interference (EMI) and reduces reflections in improperly terminated networks. The MAX487 operates with a single 5V power supply and consumes low power, making it ideal for battery-powered and embedded applications.

Key Features

• RS-485/RS-422 Transceiver – Supports half-duplex communication.
• Slew-Rate Limiting – Reduces EMI and improves signal integrity.
• Low Power Consumption – Ideal for energy-efficient applications.
• Single 5V Operation – Simplifies power requirements.
• Allows Up to 128 Devices on the Bus – Supports multi-device communication.
• Fail-Safe Receiver Input – Ensures reliable operation in noisy environments.
• Short-Circuit and Thermal Shutdown Protection – Enhances durability and safety.

Technical Specifications

• Supply Voltage: 4.75V – 5.25V
• Data Rate: Up to 250kbps (slew-rate limited)
• Receiver Input Sensitivity: ±200mV
• Receiver Input Impedance: 12kΩ (minimum)
• Propagation Delay: 250ns (typical)
• Operating Temperature: -40°C to +85°C
• Package Options: DIP, SOIC

Applications

• Industrial Automation – RS-485 communication in factories and process control.
• Building Automation – HVAC and security systems.
• Energy Management – Smart meters and grid monitoring.
• Embedded Systems – Long-distance serial communication.

Why Choose MAX487?

The MAX487 offers reliable, low-power, and EMI-friendly RS-485/RS-422 communication, making it an excellent choice for industrial, embedded, and automation applications where robust data transmission is required.