MAX1484CUB+T

Product Overview

• Category: Integrated Circuit
• Use: Communication and Interface
• Characteristics: Low-power, Half-Duplex RS-485/RS-422 Transceiver
• Package: 10 µMAX®
• Essence: High-performance transceiver for industrial applications
• Packaging/Quantity: Tape & Reel, 2500 units per reel

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: 10
• ESD Protection: ±15kV (Human Body Model)
• Receiver Input Impedance: 12kΩ
• Driver Output Impedance: 120Ω

Pin Configuration

The MAX1484CUB+T has the following pin configuration:

1. DE (Driver Enable)
2. RE (Receiver Enable)
3. RO (Receiver Output)
4. DI (Driver Input)
5. GND (Ground)
6. B (B Line)
7. A (A Line)
8. VCC (Supply Voltage)
9. R (Receiver Input)
10. D (Driver Output)

Functional Features

• Half-duplex operation with automatic switching between transmit and receive modes.
• Low power consumption in shutdown mode.
• Short-circuit protection on driver outputs.
• Thermal shutdown protection.
• Wide supply voltage range for flexibility in various applications.

Advantages

• High data rate capability allows for fast and efficient communication.
• Robust design with ESD protection ensures reliability in harsh environments.
• Low power consumption extends battery life in portable devices.
• Small package size saves board space in compact designs.

Disadvantages

• Limited to half-duplex operation, not suitable for full-duplex communication.
• Requires external components for proper operation, increasing system complexity.

Working Principles

The MAX1484CUB+T is a half-duplex RS-485/RS-422 transceiver that enables bidirectional communication between a microcontroller and other devices in industrial applications. It uses differential signaling to transmit data over long distances while providing noise immunity.

The driver section converts the logic-level signals from the microcontroller into differential voltage signals on the A and B lines. The receiver section receives the differential signals and converts them back into logic-level signals for the microcontroller to process.

The DE (Driver Enable) and RE (Receiver Enable) pins control the direction of data flow. When DE is high and RE is low, the device is in transmit mode. Conversely, when DE is low and RE is high, the device is in receive mode.

Detailed Application Field Plans

The MAX1484CUB+T is commonly used in various industrial applications such as:

1. Factory Automation: Enables reliable communication between PLCs, sensors, and actuators in automated manufacturing systems.
2. Building Automation: Facilitates communication between HVAC systems, lighting controls, and security devices in smart buildings.
3. Process Control: Provides robust data transmission in control systems for oil refineries, chemical plants, and power generation facilities.
4. Transportation Systems: Ensures reliable communication between onboard controllers, sensors, and displays in automotive and railway applications.
5. Renewable Energy: Enables efficient data exchange between solar inverters, wind turbines, and monitoring systems in renewable energy installations.

Detailed and Complete Alternative Models

1. SN75176B: Similar half-duplex RS-485 transceiver with wide supply voltage range and ESD protection.
2. LTC2850: Full-duplex RS-485 transceiver with integrated termination resistors and low power consumption.
3. ADM2483: Isolated RS-485 transceiver with integrated DC/DC converter for galvanic isolation.

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, the MAX1484CUB+T is a high-performance, low-power RS-485/RS-422 transceiver designed for industrial applications. Its robust design, high data rate capability, and wide supply voltage range make it suitable for various communication and interface needs in industrial automation and control systems.