MAX491C/D

Product Overview

• Category: Integrated Circuit
• Use: RS-485/RS-422 Transceiver
• Characteristics: High-speed, low-power, half-duplex transceiver
• Package: 8-pin SOIC or PDIP package
• Essence: Reliable and efficient communication in industrial and automotive applications
• Packaging/Quantity: Available in tape and reel packaging, quantity varies by supplier

Specifications

• Supply Voltage: 4.75V to 5.25V
• Data Rate: Up to 2.5Mbps
• Operating Temperature Range: -40°C to 85°C
• Driver Output: ±10V
• Receiver Input: ±12V
• Quiescent Current: 300µA (typical)

Detailed Pin Configuration

1. AIN-
2. AIN+
3. GND
4. BIN-
5. BOUT-
6. BOUT+
7. VCC
8. RE

Functional Features

• Low Power Consumption: Ideal for battery-powered applications
• Overvoltage Protection: Safeguards against voltage spikes
• Short-Circuit Protection: Ensures robustness in harsh environments
• High-Speed Data Transmission: Supports fast communication protocols

Advantages and Disadvantages

Advantages

• Robust performance in industrial environments
• Low power consumption extends battery life
• Overvoltage and short-circuit protection enhance reliability

Disadvantages

• Limited to half-duplex communication
• Requires external components for full functionality

Working Principles

The MAX491C/D is designed to facilitate reliable data transmission in noisy industrial and automotive environments. It employs differential signaling to minimize the impact of common-mode noise and features overvoltage and short-circuit protection to ensure system robustness.

Detailed Application Field Plans

The MAX491C/D is well-suited for a wide range of applications, including: - Industrial automation - Automotive systems - Building automation - Instrumentation and control

Detailed and Complete Alternative Models

• MAX487E: Low-power, slew-rate-limited RS-485/RS-422 transceiver
• MAX3485: Fail-safe, high-speed RS-485/RS-422 transceiver
• SN65HVD72: Half-duplex RS-485 transceiver with integrated ESD protection

In conclusion, the MAX491C/D offers a reliable and efficient solution for industrial and automotive communication needs, with its robust design and high-speed capabilities making it a popular choice in various applications.

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