Original TTL to RS485 Galvanic Isolated Converter (C) – PartsCountry

Description

This converter is designed for converting TTL signals to RS485 signals, supporting half-duplex communication. It has a TTL signal level of 3.3V to 5V and provides over-voltage protection.?The compact, immersion gold design with castellated holes makes integration easy, and it features multiple protections, including a self-recovery fuse, a TVS diode for surge and spike suppression, and is lightning-proof.

It is ideal for expanding nodes and long-distance communication and it supports transmission distances up to 1.2km and up to 32 nodes.

Features

• Compatible with TTL/RS485 standard, converting the TTL signal into differential RS485 signal, supports half-duplex communication
• Compatible with 3.3V ~ 5V TTL signal level, provides over-voltage protection for power supply interface
• Unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
• Unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
• TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
• Self-recovery fuse and protection diodes, provide the current/voltage stable outputs, provide over-current/over-voltage protection, improve shockproof performance
• RS485 output terminal 120R resistor, enabled via soldering
• Black immersion gold process design, compact size, easy to integrate

Specifications

Power Supply Interface	Power supply	3.3V ~ 5V
	Protection	Over-voltage
Device Port	Compatibility	TTL/RS485 standard compatible
TTL	Transmission distance	Less than 10m
	Transmission mode	Point-to-point
RS485	Protection	200W lightning-proof 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)
Appearance	Dimensions	42.8 x 15.2 x 4.75mm

Resources

• Product Wiki

Pinout

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	The power indicator lights up when there is a power supply connection and voltage is detected

Left Side Interface
PE	RS485 signal ground
B-	RS485 differential signal B-
A+	RS485 differential signal A+

Right Side Interface
GND	Ground / TTL signal ground
RXD	TTL receive data pin
TXD	TTL transmit data pin
VCC	Power Input
	DC 3.3V~5V power supply

Package Contents

• 1x TTL TO RS485 Converter