Waveshare TTL To RS485 (C) Galvanic Isolated Converter
TTL To RS485 (C)
Galvanic isolated Converter
Castellated Holes With Immersion Gold process, Compact size, Easy to integrate
Features at a glance
- 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
- 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, low power consumption
- Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning proof & anti-electrostatic
- Onboard self-recovery fuse and protection diodes, ensure the current/voltage stable outputs, provide over-current/over-voltage protection, improve shockproof performance
- Onboard RS485 output terminal 120R resistor, enabled via soldering
- Black immersion gold process design, compact size, easy to integrate
Specifications
| Product Type | Galvanic isolated TTL To RS485 converter | |
|---|---|---|
| Power supply interface | Power supply | 3.3V ~ 5V |
| Protection | over-voltage | |
| Device Port | TTL/RS485 standard compatible | |
| 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) | |
| Appearance | Dimensions | 42.8 x 15.2 x 4.75mm |
Primary function
Converting the TTL signal into a balanced differential RS485 signal
for interface converting, expanding nodes, and long-distance communication
Multiple Protection, Safe And Stable
Onboard power and signal isolation, provide stable isolated voltage, high reliability, and strong anti-interference. Onboard Lightningproof Diodes and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic. Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock proof performance
Compact And Easy Integration
Castellated Holes With Immersion Gold Design, Highly Integrated Packaging
Supports Multiple Ways To Be Embedded Into Various Product Applications
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 | The power indicator, lights up when there is a power supply connection and voltage is detected |
| Left side interface | Right side interface | ||
|---|---|---|---|
| PE | RS485 signal ground | GND | Ground / TTL signal ground |
| RXD | TTL receives data pin | ||
| B- | RS485 differential signal B- | TXD | TTL transmits data pin |
| A+ | RS485 differential signal A+ | VCC | Power Input DC 3.3V~5V power supply |
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
Resources & Services
Wiki: www.waveshare.com/wiki/TTL_TO_RS485_(C)
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