MAX487EESA+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX487EESA+ belongs to the category of integrated circuits (ICs) and specifically falls under the family of RS-485/RS-422 transceivers.

Use

This product is primarily used for bidirectional data communication over long distances. It enables reliable and high-speed data transmission in industrial automation, telecommunications, and other applications.

Characteristics

• High-Speed Data Transmission: The MAX487EESA+ supports data rates up to 2.5 Mbps, making it suitable for demanding applications.
• Robustness: It features built-in protection against electrostatic discharge (ESD) and voltage spikes, ensuring reliable operation in harsh environments.
• Low Power Consumption: The device is designed to minimize power consumption, making it suitable for battery-powered applications.
• Wide Supply Voltage Range: It operates from a supply voltage range of 3V to 5.5V, providing flexibility in various system designs.

Package and Quantity

The MAX487EESA+ is available in a small-sized 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Data Rate: Up to 2.5 Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Pins: 8
• Package Type: SOIC

Pin Configuration

The MAX487EESA+ has the following pin configuration:

```

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| | --| VCC B |-- --| GND A |-- --| RO Y |-- --| RE /RE |-- --| DE /DE |-- --| DI Z |-- |___________| ```

• VCC: Supply Voltage
• GND: Ground
• A, B: Differential Data Inputs/Outputs
• RO, RE, DE, DI: Control Pins for Receiver Output, Receiver Enable, Driver Enable, and Driver Input, respectively
• Y, Z: Single-Ended Outputs

Functional Features

The MAX487EESA+ offers the following functional features:

1. Half-Duplex Operation: It supports half-duplex communication, allowing data transmission in both directions but not simultaneously.
2. Receiver and Driver Enable Control: The receiver and driver can be independently enabled or disabled using the RE/DE pins, providing flexibility in controlling the data flow.
3. Thermal Shutdown Protection: The device incorporates thermal shutdown circuitry to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• High-speed data transmission capability
• Robustness against ESD and voltage spikes
• Low power consumption
• Wide supply voltage range for compatibility with different systems

Disadvantages

• Limited to half-duplex operation, not suitable for full-duplex communication
• Availability of alternative models with additional features

Working Principles

The MAX487EESA+ is based on the RS-485/RS-422 standard, which uses differential signaling for noise immunity and long-distance communication. It employs a balanced line driver and receiver to transmit and receive data over twisted-pair cables. The control pins allow for enabling or disabling the receiver and driver as needed.

Application Field Plans

The MAX487EESA+ finds applications in various fields, including: - Industrial Automation: It enables reliable data communication between sensors, actuators, and control systems in industrial environments. - Telecommunications: The product facilitates long-distance data transmission in telecommunication networks. - Building Automation: It can be used for communication between different building automation devices, such as HVAC systems, lighting controls, and security systems.

Alternative Models

Several alternative models are available in the market that offer similar functionality to the MAX487EESA+. Some popular alternatives include: - SN75176: Manufactured by Texas Instruments - LTC485: Produced by Linear Technology - ADM485: Offered by Analog Devices

These alternative models may have additional features or different package options, providing users with a wider range of choices based on their specific requirements.

In conclusion, the MAX487EESA+ is a versatile RS-485/RS-422 transceiver that offers high-speed data transmission, robustness, and low power consumption. Its wide application field plans and availability of alternative models make it suitable for various industrial and communication applications.

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