MAX487EESA

Product Overview

• Category: Integrated Circuit (IC)
• Use: RS-485/RS-422 Transceiver
• Characteristics: Low-power, half-duplex communication, high-speed data transmission
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: MAX487EESA is a versatile IC that enables reliable and efficient communication over long distances using the RS-485/RS-422 protocol.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: +4.75V to +5.25V
• Data Rate: Up to 2.5Mbps
• Operating Temperature Range: -40°C to +85°C
• ESD Protection: ±15kV Human Body Model
• Number of Drivers/Receivers: 1 Driver, 1 Receiver

Pin Configuration

The MAX487EESA features an 8-pin SOIC package with the following pin configuration:

1. DE (Driver Enable)
2. RE (Receiver Enable)
3. A (Non-Inverting Driver Output / Receiver Input)
4. B (Inverting Driver Output / Receiver Input)
5. GND (Ground)
6. B (Inverting Driver Output / Receiver Input)
7. A (Non-Inverting Driver Output / Receiver Input)
8. VCC (Supply Voltage)

Functional Features

• Half-Duplex Communication: The MAX487EESA supports bidirectional communication on a single pair of wires, allowing for both transmitting and receiving data.
• Low-Power Operation: This IC is designed to consume minimal power during operation, making it suitable for battery-powered applications.
• High-Speed Data Transmission: With a maximum data rate of 2.5Mbps, the MAX487EESA enables fast and efficient data transfer.
• ESD Protection: The IC provides robust protection against electrostatic discharge, ensuring reliable operation in harsh environments.

Advantages and Disadvantages

Advantages: - Versatile RS-485/RS-422 transceiver suitable for various applications - Low-power consumption extends battery life in portable devices - High-speed data transmission enables quick communication - Robust ESD protection ensures reliability

Disadvantages: - Limited to half-duplex communication, not suitable for full-duplex applications - Requires external components for complete functionality

Working Principles

The MAX487EESA operates based on the RS-485/RS-422 protocol, which allows for differential signaling over long distances. It uses a single pair of wires for both transmitting and receiving data, employing differential voltage levels to improve noise immunity and signal integrity. The DE (Driver Enable) and RE (Receiver Enable) pins control the direction of data flow, enabling half-duplex communication.

Detailed Application Field Plans

The MAX487EESA finds applications in various fields, including:

1. Industrial Automation: Used for communication between PLCs (Programmable Logic Controllers), sensors, and actuators in industrial control systems.
2. Building Automation: Enables communication between HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and other building automation devices.
3. Automotive Electronics: Facilitates communication between different automotive modules, such as engine control units, body control modules, and infotainment systems.
4. Telecommunications: Used in networking equipment, such as routers, switches, and repeaters, for reliable data transmission over long distances.
5. Renewable Energy Systems: Enables communication between solar inverters, wind turbines, and energy management systems for efficient power generation and distribution.

Detailed and Complete Alternative Models

1. SN75176B: RS-485 Transceiver with similar specifications and pin configuration.
2. LTC485: Low-power RS-485 Transceiver with extended temperature range.
3. MAX3485: RS-485/RS-422 Transceiver with enhanced ESD protection and higher data rate.

These alternative models offer similar functionality to the MAX487EESA and can be considered as alternatives based on specific application requirements.

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