7Semi RS485 to UART Transceiver Breakout - SP485EEN-L/TR

The 7Semi RS485 to UART Transceiver Breakout – SP485EEN-L/TR is a robust and compact communication module designed for converting UART serial signals to RS485 differential signals. Based on the SP485EEN-L/TR transceiver chip, it enables reliable long-distance and noise-resistant data transmission over twisted-pair cables. The module supports half-duplex communication and is compatible with most microcontrollers, PLCs, and industrial control systems. It is ideal for applications requiring stable and high-speed serial communication in electrically noisy environments.

Technical Specifications:

• IC Chip: SP485EEN-L/TR
  
• Communication Standard: RS485 (half-duplex)
  
• UART Interface: TTL-level (RX, TX)
  
• Operating Voltage: 3.3 V to 5.0 V
  
• Data Rate: Up to 10 Mbps
  
• Bus Load: Supports up to 32 transceivers on the same bus
  
• Receiver Sensitivity: ±200 mV (differential input)
  
• Common-Mode Voltage Range: -7 V to +12 V
  
• Operating Temperature: -40°C to +85°C
  
• Interface Pins: RO (Receiver Output), RE (Receiver Enable), DE (Driver Enable), DI (Driver Input), A/B (RS485 differential pair)
  
• Protection: Built-in thermal shutdown and short-circuit protection
  
• Mounting Type: Through-hole or header pin compatible breakout PCB
  
• Dimensions: Compact, breadboard-friendly form factor
  
• PCB Material: High-quality FR-4 substrate

Features:

• Converts UART (TTL) to RS485 differential signal interface
  
• Based on industry-proven SP485EEN-L/TR transceiver
  
• Supports high-speed communication up to 10 Mbps
  
• Operates with both 3.3 V and 5 V logic systems
  
• Integrated protection against short circuits and thermal overload
  
• Noise-resistant and long-distance communication capability
  
• Compact and easy to interface with microcontrollers and SBCs
  
• Breadboard-friendly design for rapid prototyping
• Low power consumption with reliable performance in industrial environments

Applications:

• Industrial communication and automation systems
  
• RS485-based sensor and device networks
  
• Building management and HVAC control systems
  
• Long-distance UART communication links
  
• Modbus RTU and industrial protocol converters
  
• IoT gateways and embedded systems requiring RS485 connectivity
  
• PLCs, motor controllers, and data acquisition systems
  
• Educational and prototyping applications involving serial networking