MAX487EESA+T

Product Overview

• Category: Integrated Circuit
• Use: RS-485/RS-422 Transceiver
• Characteristics: Low-power, Half-duplex, ESD Protection
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: High-speed communication interface for industrial applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: +3.0V to +5.5V
• Data Rate: Up to 2.5Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1 Driver, 1 Receiver
• ESD Protection: ±15kV Human Body Model

Pin Configuration

The MAX487EESA+T has 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

• Low power consumption
• Half-duplex communication
• Enhanced ESD protection
• Wide supply voltage range
• High data rate capability
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered devices. - Enhanced ESD protection ensures robustness in harsh environments. - Wide supply voltage range allows compatibility with various systems. - High data rate capability enables fast and reliable communication.

Disadvantages: - Limited to half-duplex communication, not suitable for full-duplex applications. - Requires external components for proper operation. - May be more expensive compared to simpler transceiver options.

Working Principles

The MAX487EESA+T is an RS-485/RS-422 transceiver that facilitates high-speed communication between devices in industrial applications. It operates in a half-duplex mode, allowing transmission and reception of data on a single pair of wires. The driver section converts the logic-level signals into differential voltage signals suitable for long-distance transmission, while the receiver section converts the received differential signals back into logic-level signals.

Detailed Application Field Plans

The MAX487EESA+T finds extensive use in various industrial applications, including:

1. Building Automation Systems: Enables reliable communication between sensors, actuators, and control systems in HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting control, and access control systems.
2. Industrial Control Systems: Facilitates communication between PLCs (Programmable Logic Controllers), motor drives, and other industrial equipment, ensuring efficient control and monitoring of manufacturing processes.
3. Instrumentation and Measurement: Provides a robust interface for transmitting sensor data over long distances, making it suitable for applications such as temperature measurement, pressure sensing, and flow monitoring.
4. Renewable Energy Systems: Enables communication between solar inverters, wind turbines, and energy management systems, facilitating efficient power generation and distribution.

Detailed and Complete Alternative Models

1. SN75176B: Similar RS-485 transceiver with wide supply voltage range and enhanced ESD protection.
2. LTC1480: Low-power RS-485 transceiver with integrated fail-safe circuitry.
3. ADM485: Half-duplex RS-485 transceiver with low power consumption and extended temperature range.

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