TTL to RS485 Serial Converter Module – 3.3V / 5V Auto Control Board

Name: TTL to RS485 Serial Converter Module – 3.3V / 5V Auto Control Board
Brand: MAJESTRONICZ
Price: 109.00 INR
Availability: InStock

Rs. 109.00 Rs. 139.00

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Description

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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