PMM0912 - UART/TTL to RS485 Converter Module

UART/TTL to RS485 Converter Module

Key features

• Compatible with 3.3V and 5.0V power supply and signals
• Supports baud rate: 110-256000 bps
• Transmittance distances up to 1200 meters
• Operating temperature: -40 to 800C
• Very high EMC and EMI performance
• RXT and TXD signal indicator LEDs to monitor, send and receive status
• 120 Ohm terminal resistors
• Support multi-machine communication, allowing access for up to 32 devices on bus
• Electrical interference and noise is greatly reduced by the presence of a large copper area
• Radio transmission anti-jamming and lightning protection
• Module size: 43mm * 18mm * 3mm
• Vertical and horizontal mounting options, compatible with standard DIP/SIP pinout
• RoHS Compliant
• Proven PCB Layout
• Fully Assembled and Tested

Overview

DESCRIPTION

PMM0912 is a TTL to RS485 converter module via MAX485 TTL to RS-485 Interface chipset which allows ICs to use RS-485 differential signaling for robust long-distance serial communications. This module allows for data transmission and communication of a CPU/MCU with any 2-wire RS485 device over large distances up to 1200m (4000’).

Earthing the module by connecting its terminal to ground gives it an excellent anti-jamming and anti-lightning effect, thus making it more secure and perfect for industrial use. Moreover, it has the ability to work under difficult environmental conditions.

BOARD PINOUT

SCHEMATIC DIAGRAM

MULTI-DROP CONNECTION

DIMENSIONS

Specifications