MAX487CSA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX487CSA+ belongs to the category of integrated circuits (ICs).

Use

The MAX487CSA+ is commonly used as a low-power, slew-rate-limited transceiver for RS-485 and RS-422 communication systems.

Characteristics

• Low power consumption
• Slew-rate limited for improved signal integrity
• Supports data rates up to 2.5 Mbps
• Wide supply voltage range: 4.75V to 5.25V
• ESD protection for robustness in harsh environments

Package

The MAX487CSA+ is available in an 8-pin small outline integrated circuit (SOIC) package.

Essence

The essence of MAX487CSA+ lies in its ability to provide reliable and efficient communication between devices using RS-485 and RS-422 protocols.

Packaging/Quantity

The MAX487CSA+ is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 2.5 Mbps
• Number of Pins: 8
• Package Type: SOIC

Pin Configuration

The MAX487CSA+ 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

• Driver and receiver enable control for half-duplex communication
• Slew-rate limited outputs for reduced electromagnetic interference (EMI)
• Thermal shutdown protection to prevent damage from excessive heat
• ESD protection on bus pins for enhanced robustness

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered applications
• Slew-rate limiting improves signal integrity in long-distance communication
• Wide supply voltage range allows for flexibility in various systems
• ESD protection ensures reliability in harsh environments

Disadvantages

• Limited to RS-485 and RS-422 communication protocols
• Not suitable for high-speed data transmission applications

Working Principles

The MAX487CSA+ is designed to facilitate bidirectional communication between devices using the RS-485 and RS-422 protocols. It incorporates driver and receiver circuits that enable half-duplex communication. The slew-rate limited outputs help reduce reflections and electromagnetic interference, ensuring reliable data transmission over long distances.

Detailed Application Field Plans

The MAX487CSA+ finds applications in various fields, including:

1. Industrial automation: Used for communication between PLCs, sensors, and actuators.
2. Building automation: Enables communication between control panels, HVAC systems, and lighting controls.
3. Automotive systems: Facilitates communication between different modules in vehicles, such as engine control units and infotainment systems.
4. Telecommunications: Used in networking equipment for data transmission over long distances.
5. Security systems: Enables communication between security cameras, access control systems, and central monitoring stations.

Detailed and Complete Alternative Models

1. MAX3485ESA+: Similar to MAX487CSA+, but with a lower supply voltage range (3.0V to 3.6V).
2. SN75176BP: RS-485 transceiver with similar functionality and pin configuration.
3. LTC2857IGN#PBF: High-speed RS-485 transceiver with data rates up to 20 Mbps.

These alternative models offer similar features and can be used as substitutes for the MAX487CSA+ in different applications.

In conclusion, the MAX487CSA+ is a versatile integrated circuit that provides reliable communication using RS-485 and RS-422 protocols. Its low power consumption, slew-rate limiting, and ESD protection make it suitable for various industrial, automotive, and telecommunications applications. While it has some limitations, alternative models are available to meet specific requirements.