Waveshare TTL To RS485 (C) Galvanic Isolated Converter, Half-Duplex Communication, Lightningproof & Anti-Surge, Multi-Isolation Protection

The Waveshare TTL to RS485 (C) Galvanic Isolated Converter offers a robust and reliable solution for serial communication in demanding industrial and commercial applications. With its galvanic isolation, lightning protection, surge suppression, and multi-isolation protection features, this converter ensures stable and secure data transmission over long distances, making it an essential component in systems requiring dependable communication in challenging environments.

User Manual / Datasheet / Example Codes Etc.

Features

• Compatible with TTL/RS422 standard, converting the TTL signal into a balanced differential RS485 signal, supporting half-duplex communication
• Compatible with 3.3V ~ 5V TTL signal level, with anti-reverse connection and anti-over-voltage circuit on the power supply side
• Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, and low power consumption
• Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, and anti-electrostatic
• Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock resistance
• On-board RS485 input and output 120R resistors with built-in jumper caps for switching enable
• Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective

Specifications

• PRODUCT TYPE: Galvanic isolated TTL To RS485 converter
• DEVICE PORT TTL/RS485 standard compatible
• Dimensions: 42.8 x 15.2 x 4.75mm

POWER SUPPLY INTERFACE

• Power supply: 3.3V ~ 5V
• Protection: over-voltage

TTL

• Transmission distance: Less than 10m
• Transmission mode: point-to-point

RS485

• Protection: 200W lightningproof and surge-suppress, 6KV ESD protection
• Terminal resistor: 120R, enabled via soldering
• Transmission Distance: About 1.2km
• Transmission Mode: point-to-multipoint (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)

Package Includes

• 1x TTL TO RS485 (C)

Primary Function

Interface Introduction

INDICATORS

R (RXD): RX indicator, lights up when the TTL port receives data

T (TXD): TX indicator, lights up when the TTL port sends data

PWR: Power indicator, lights up when there is power supply connection and voltage is detected

 

 

 

Communication Connection Diagram

 

TTL convert to RS485, point-to-point, half-duplex communication, suitable for interface conversion

 

 

 

 

TTL convert to RS485, point-to-multipoint, half-duplex communication, suitable for expanding nodes

 

 

 

 

 

Two groups TTL To RS485 conversion, point-to-point, half-duplex communication, suitable for extending the communication distance of TTL

 

 

 

 

Dimensions

 

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