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Green circuit board with terminal blocks and isolation components

LORDWORLD

LORDWORLD Galvanic Isolated TTL to RS485 (C) Converter Half-Duplex Multi-Isolation Development Board

SKU CH-ZC0E-6SX6V

Converts TTL to RS485 with galvanic isolation for half-duplex links up to 1.2 km and 32 nodes

  • Galvanic isolation protects equipment from ground loops and surges
  • Half-duplex RS485 reaches 1.2 km over twisted pair
  • 3 V to 5 V TTL input works with common microcontrollers
  • Onboard 120 R termination resistor selectable by soldering
  • TVS suppressor plus self-recovery fuse guards against transients and over-current

Isolated TTL to RS485 Converter

This development board converts TTL signals into differential RS485 signals with galvanic isolation. It supports half-duplex communication and works with 3.3V to 5V logic levels. Onboard unibody power and digital isolation remove the need for a separate isolated supply. The module suits makers building noise-immune industrial or remote sensor links.

Upgrade from bare transceiver modules

The board adds integrated TVS suppression, a self-recovery fuse and protection diodes that discrete chips lack. Isolation and surge protection become worthwhile when cable runs exceed a few metres or when lightning and electrostatic discharge are a risk. The solder-selectable 120R termination resistor simplifies bus-end installation without extra parts.

Sustained industrial operation

Continuous half-duplex traffic over distances up to 1.2Km remains stable thanks to isolated power delivery and digital isolation that rejects common-mode noise. Over-voltage and over-current safeguards protect the converter during prolonged fault conditions. The design supports up to 32 nodes on a single bus without external buffering.

Puntos fuertes

  • Galvanic isolation protects equipment from ground loops and surges
  • Half-duplex RS485 reaches 1.2 km over twisted pair
  • 3 V to 5 V TTL input works with common microcontrollers
  • Onboard 120 R termination resistor selectable by soldering
  • TVS suppressor plus self-recovery fuse guards against transients and over-current

Especificaciones

BrandLORDWORLD

Preguntas sobre este artículo

What TTL voltage levels does this RS485 converter accept?

The board accepts 3.3V to 5V TTL signal levels and includes over-voltage protection on the power supply interface.

How do I enable the onboard 120R termination resistor on the RS485 output?

The 120R termination resistor is enabled by soldering the provided jumper or pads on the board.

What protection components will need checking after a surge event?

The onboard TVS diodes, self-recovery fuse and protection diodes handle surge suppression; the fuse self-resets, while diodes should be inspected for damage after a major transient.

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