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TTL to RS485 Galvanic Isolated Converter (C)
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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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5.00
Based on 2 reviews
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Product Reviews
TTL to RS485 Galvanic Isolated Converter (C)
Leds for transmitting and recieving are helpful (and helpful for realising the ttl side marks Tx and Rx from the perspective of this board rather than a connected MCU). Good for DMX applications.
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1 month ago
TTL to RS485 Galvanic Isolated Converter (C)
Like the fact it's got good isolation and a couple of LEDs that flash when passing comms.
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8 months ago
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