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MAJESTRONICZ
TTL to RS485 Serial Converter Module – 3.3V / 5V Auto Control Board
TTL to RS485 Serial Converter Module – 3.3V / 5V Auto Control Board
Regular price
Rs. 105.00
Regular price
Rs. 139.00
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Rs. 105.00
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TTL to RS485 Serial Converter Module
This module converts TTL UART signals from microcontrollers (Arduino, ESP32, STM32, Raspberry Pi UART, etc.) into RS485 differential signals for long-distance communication.
Specifications
| Parameter | Value |
|---|---|
| Communication Standard | RS485 |
| Logic Voltage | 3.3V / 5V compatible |
| Supply Voltage (VCC) | 3.0V – 5.5V DC |
| UART Interface | TTL Serial (TX, RX) |
| Baud Rate | Up to 115200 bps (typically), some modules support higher |
| Control Method | Automatic TX/RX direction control |
| Transmission Distance | Up to 1200 m (RS485 standard) |
| Number of Nodes | Up to 32 devices on one bus |
| Differential Signals | A (+), B (-) |
| Operating Temperature | -40°C to +85°C (typical) |
| IC Used | Usually MAX485, SP3485, or equivalent |
| Power Consumption | Low power (<10 mA typical) |
Pin Configuration
| TTL Side | Function |
|---|---|
| VCC | 3.3V/5V Supply |
| GND | Ground |
| TXD | UART Transmit |
| RXD | UART Receive |
| RS485 Side | Function |
|---|---|
| A (D+) | RS485 Positive |
| B (D-) | RS485 Negative |
Features
- Supports both 3.3V and 5V microcontrollers
- Auto-flow control (no DE/RE pin handling required)
- Long-distance communication up to 1200 m
- High noise immunity due to differential signaling
- Suitable for industrial and automation projects
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