HW-519 TTL to RS485 Converter Module

HW-519 TTL to RS485 Converter Module

The HW-519 TTL to RS485 Converter Module is a versatile and efficient device used to convert TTL (Transistor-Transistor Logic) serial communication to RS485 differential signal for long-distance and noise-resistant data transmission. This module is commonly used in industrial automation, sensor networks, Modbus communication, and other systems where reliable, robust communication over extended distances is crucial.

The HW-519 module offers automatic direction control, which eliminates the need for manual toggling of RE/DE pins found in traditional RS485 modules like the MAX485. This simplifies the setup and operation of the converter, making it easier to implement in projects without the need for additional control signals or hardware.

Designed to support both 3.3V and 5V logic levels, the HW-519 module is highly compatible with a wide range of microcontrollers, including Arduino, ESP32, Raspberry Pi, and more. It is equipped with indicators like TXD and RXD LEDs that show the status of data transmission and reception, providing valuable feedback for debugging and operation.

One of the standout features of the HW-519 is its built-in 120Ω termination resistor. This resistor can be enabled through the R0 jumper to terminate the RS485 bus, ensuring stable communication over long distances (up to 1200 meters) and preventing signal reflection, which can degrade data quality. Additionally, the module includes protection components such as polyfuses and TVS diodes to safeguard the system from voltage spikes and electrical interference, which is important for ensuring the durability and reliability of the system in industrial environments.

With its compact size, ease of use, and robust performance, the HW-519 TTL to RS485 Converter Module is a great choice for projects requiring reliable, high-speed communication over long distances with minimal interference.

Features: 

• Effortless Communication Integration: The HW-519 simplifies the connection between TTL (low-voltage logic) and RS485 communication standards, making it easy to integrate devices with different signal types into a single communication network.
• Automatic Direction Control: The module automatically manages data direction (send/receive) without requiring manual control. This feature greatly simplifies system setup, as users don’t need to manually toggle control pins during communication.
• Enhanced Data Integrity: Thanks to the built-in 120Ω termination resistor, the HW-519 ensures stable, noise-resistant data transmission over long distances, preventing issues like signal reflections that could degrade data quality.
• Versatile Use Across Devices: Supporting both 3.3V and 5V logic levels, the HW-519 is adaptable to a wide variety of microcontrollers and embedded systems, making it a highly flexible solution for different projects.
• Real-Time Feedback: Equipped with RXD and TXD LED indicators, the module provides visual feedback about data reception and transmission. This feature helps users quickly verify that data is being transmitted correctly, which is particularly useful for troubleshooting.
• Built-in Protection: The module comes with integrated protection mechanisms, like TVS diodes and polyfuses, which shield the system from electrical surges, ensuring greater durability and reliability in harsh operating conditions.
• Supports Long-Distance Communication: RS485 communication allows the module to transmit data over distances up to 1200 meters. This makes it perfect for industrial, automation, and sensor network applications where distance and signal integrity are important.
• Compact and Simple Design: The module’s small size makes it easy to integrate into various systems without taking up much space, while its straightforward design ensures that it’s user-friendly and accessible for both beginners and experienced developers.
• Full-Duplex Operation: The HW-519 supports full-duplex communication, allowing devices to transmit and receive data simultaneously. This increases the efficiency of communication and is beneficial in systems requiring continuous data flow.
• Low Power Consumption: Designed for minimal power usage, the HW-519 is ideal for battery-powered or energy-efficient systems, ensuring it doesn’t drain excessive energy while performing its tasks.

Specifications:

Applications:

• Industrial Automation.
• Modbus RTU Protocol.
• Remote Monitoring.
• Building Automation.
• Smart Grid Communication.
• Security Systems.
• Data Acquisition Systems.
• Communication in Harsh Environments.
• Vehicle Networking.
• Remote I/O Systems.

Package Included:

• 1x HW-519 TTL to RS485 Converter Module

Datasheet:

HW-519 TTL to RS485 Converter Module