TTL to RS485 Converter Module

This TTL to RS485 converter module is engineered to deliver robust serial communications in harsh environments. It supports automatic device flow control and is compatible with 3.3V and 5.0V logic levels. It is ideal for connecting microcontrollers to RS485 devices over long distances.

Features:

• Conversion from TTL UART to RS485
• Supports 3.3V / 5V logic levels
• Automatic device flow control
• TXD and RXD LED indicators
• Operating temperature range: -40°C to +85°C
• Strong anti-interference capability
• Supports up to 128 devices on the RS485 bus
• Tested up to 850 meters with a 2x1.5 mm² cable (recommended ≤800 meters)
• Integrated 120Ω end resistance (R0 short to enable)
• Half-hole (castellated) 2.54 mm pitch for soldering or baseboard installation
• Large copper area to reduce signal interference
• Hot-swappable - safe to connect while operating

Specifications:

• Chip: High-quality RS485 transmitter and receiver
• Voltage: Compatible with 3.3V / 5.0V
• Operating temperature range: -40°C to +85°C
• Dimensions: 42.8 mm × 15.22 mm × 0.8 mm
• Indicators: TXD and RXD LED lights
• Bus capacity: Supports up to 128 devices

Package Includes:

1 × TTL to RS485 Converter Module