MAX490EESA+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX490EESA+ 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 MAX490EESA+ supports data rates up to 2.5 Mbps, allowing for efficient communication.
• Robustness: It features built-in protection against electrostatic discharge (ESD) and voltage spikes, ensuring reliable operation in harsh environments.
• Low power consumption: This IC is designed to minimize power consumption, making it suitable for battery-powered devices.
• Wide supply voltage range: It can operate from a supply voltage as low as 4.5V up to 5.5V, providing flexibility in various applications.

Package

The MAX490EESA+ is available in an 8-pin small outline integrated circuit (SOIC) package. This package offers compactness and ease of integration into electronic systems.

Essence

The essence of the MAX490EESA+ lies in its ability to facilitate long-distance data communication with high reliability and efficiency.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 4.5V 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

Detailed Pin Configuration

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

Functional Features

• Bidirectional data transmission: The MAX490EESA+ allows for simultaneous transmission and reception of data, enabling full-duplex communication.
• Driver and receiver enable control: The DE and RE pins provide control over the driver and receiver sections, allowing for flexible operation.
• ESD protection: Built-in protection guards against electrostatic discharge, enhancing the reliability of the communication link.
• Low power shutdown mode: It offers a low-power shutdown mode, reducing power consumption when the device is not actively transmitting or receiving data.

Advantages and Disadvantages

Advantages

• High-speed data transmission capability
• Robustness against ESD and voltage spikes
• Low power consumption
• Wide supply voltage range
• Compact package size for easy integration

Disadvantages

• Limited to RS-485/RS-422 communication standards
• Requires external components for complete functionality

Working Principles

The MAX490EESA+ operates based on the RS-485/RS-422 communication standards. It utilizes differential signaling to transmit data, which provides noise immunity and enables long-distance communication. The driver section converts the logic-level signals into differential voltages, while the receiver section converts the received differential voltages back into logic-level signals.

Detailed Application Field Plans

The MAX490EESA+ finds applications in various fields, including: 1. Industrial automation: It enables reliable data communication between industrial control systems, sensors, and actuators over long distances. 2. Telecommunications: This IC facilitates high-speed data transmission in telecommunications equipment, such as modems and routers. 3. Building automation: It can be used for communication between different building automation devices, such as HVAC systems and access control systems. 4. Automotive electronics: The MAX490EESA+ is suitable for automotive applications, including vehicle diagnostics and communication between different electronic modules.

Detailed and Complete Alternative Models

1. MAX481ECPA+: This IC offers similar functionality to the MAX490EESA+ but comes in a different package (DIP-8) and has a lower data rate of 2.5 Mbps.
2. SN75176BP: This RS-485 transceiver provides comparable features to the MAX490EESA+ and is available in a DIP-8 package.
3. LTC2857IGN: This IC supports higher data rates (up to 20 Mbps) and offers additional features like hot-swappable capability, making it suitable for more demanding applications.

In conclusion, the MAX490EESA+ is an integrated circuit belonging to the RS-485/RS-422 transceiver family. It enables reliable bidirectional data communication over long distances with high-speed transmission. Its robustness, low power consumption, and wide supply voltage range make it suitable for various applications in industrial automation, telecommunications, and other fields