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TTL To RS485 (C) Galvanic Isolated Converter
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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
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
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