MAX1480BEPI

Product Overview

• Category: Integrated Circuit
• Use: RS-485/RS-422 Transceiver
• Characteristics: High-speed, low-power, half-duplex communication
• Package: 20-pin DIP (Dual In-line Package)
• Essence: Provides reliable and robust communication between multiple devices in industrial applications
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Supply Voltage: 4.75V to 5.25V
• Data Rate: Up to 2.5 Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1 Driver, 1 Receiver
• Driver Output Current: ±60mA
• Receiver Input Voltage Range: -7V to +12V
• Shutdown Mode: Low power consumption when not in use

Pin Configuration

The MAX1480BEPI has a total of 20 pins. The pin configuration is as follows:

1. DE (Driver Enable)
2. RE (Receiver Enable)
3. DI (Driver Input)
4. RO (Receiver Output)
5. VCC (Power Supply)
6. GND (Ground)
7. A (Driver Output)
8. B (Driver Output)
9. Y (Receiver Input)
10. Z (Receiver Input)
11. NC (No Connection)
12. NC (No Connection)
13. NC (No Connection)
14. NC (No Connection)
15. NC (No Connection)
16. NC (No Connection)
17. NC (No Connection)
18. NC (No Connection)
19. NC (No Connection)
20. NC (No Connection)

Functional Features

• Supports RS-485 and RS-422 standards
• Half-duplex communication mode
• Built-in fail-safe receiver ensures high noise immunity
• Thermal shutdown protection prevents damage due to excessive heat
• Low power consumption in shutdown mode

Advantages and Disadvantages

Advantages

• High-speed data transmission up to 2.5 Mbps
• Wide operating temperature range for industrial applications
• Robust communication in noisy environments
• Easy integration with existing systems
• Compact and durable package

Disadvantages

• Limited to half-duplex communication only
• Requires external components for complete functionality
• Relatively higher cost compared to some alternatives

Working Principles

The MAX1480BEPI is a transceiver that enables bidirectional communication between devices using the RS-485 or RS-422 standard. It converts the logic-level signals from the driver input (DI) into differential voltage signals on the A and B outputs. The receiver section converts the differential voltage signals from the Y and Z inputs into logic-level signals on the receiver output (RO).

The driver and receiver sections are controlled by the DE and RE pins, respectively. When DE is high, the driver is enabled, allowing data transmission. When RE is high, the receiver is enabled, allowing data reception. The fail-safe receiver ensures reliable reception even in the presence of noise.

Application Field Plans

The MAX1480BEPI is widely used in various industrial applications that require robust and reliable communication. Some common application fields include:

1. Factory Automation: Used for communication between PLCs (Programmable Logic Controllers), sensors, and actuators.
2. Building Automation: Enables communication between HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and security systems.
3. Process Control: Facilitates communication between control systems and field devices such as valves, pumps, and motors.
4. Energy Management: Allows for communication between smart meters, energy monitoring systems, and control centers.
5. Transportation Systems: Used in communication networks for traffic management, railway signaling, and vehicle tracking.

Alternative Models

• MAX485E
• SN75176
• LTC485
• ADM485
• SP485

These alternative models offer similar functionality to the MAX1480BEPI and can be considered as replacements based on specific requirements and availability.

In conclusion, the MAX1480BEPI is a high-speed RS-485/RS-422 transceiver that provides reliable communication in industrial applications. Its robust features, wide operating temperature range, and compact package make it suitable for various fields such as factory automation, building automation, and process control. While it has some limitations, there are alternative models available to suit different needs.