Description
Industrial Isolated USB to RS232/485/TTL Interface Converter
Industrial Isolated USB Converter. Stable Data Transmission | Wide Device Compatibility | Multi-OS Support.
This product is an industrial isolated USB to RS232/485/TTL converter, equipped with the original FT232RL chip. It provides fast communication, stability, reliability, and better compatibility. The device comes in an aluminum alloy casing, making it robust and durable.
Aluminum alloy casing, USB-B port, RS232 DB9 port, screw terminals for RS485/TTL, and LED indicators
Key Features
- Utilizes the original FT232RL chip for fast, stable, and reliable communication with enhanced compatibility.
- Onboard power galvanic isolation provides stable isolated voltage and does not require an additional power supply for the isolated side.
- Onboard digital (ADI magnetic) isolation for signals ensures high reliability, strong anti-interference capabilities, and low power consumption.
- Onboard TVS (Transient Voltage Suppressor) effectively suppresses surges and transient peak voltages in the circuit, providing lightning and ESD protection.
- Onboard self-recovery fuse and protection diodes ensure stable output currents/voltages, overcurrent/overvoltage protection, and improved shock resistance.
- Fully automatic transceiver circuit with no delay ensures fast and stable data exchange between the USB port and various interfaces without mutual interference.
- Onboard 3.3V/5V TTL level converter allows adjusting the TTL level via a switch.
- Aluminum alloy casing with sandblasting and anodic oxidation, manufactured using CNC, making it robust and durable.
- 3 LEDs for power and transceiver status indication (PWR, TXD, RXD).
- High-quality USB-B and RS232 (DB9 male) connectors for easy connection and disconnection.
- Supports various operating systems: Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7.
Important Note:
- Only one of the interfaces (RS232, RS485, or TTL) can be converted to USB at a time.
- RS232, RS485, and TTL interfaces cannot be converted to each other using this device.
Technical Specifications
| Parameter | Interface | Details |
|---|---|---|
| Product Type | Industrial Digital Isolated Converter | |
| USB | Operating Voltage | 5V (via USB-B connector) |
| Connector | USB-B | |
| Protection | 200mA self-recovery fuse, isolated output | |
| RS232 | Connector | DB9 male |
| Protection | TVS diode, overvoltage and ESD protection | |
| Transmission Mode | Point-to-point | |
| Baud Rate | FT232RL: 300 bps ~ 921600 bps |
|
| RS485 | Connector | Screw terminals |
| Pins | A+, B-, GND | |
| Direction Control | Hardware automatic detection and control of data transmission direction | |
| Protection | 600W lightning and surge protection, 15KV ESD protection (provision for 120 Ohm termination resistor pads) | |
| Transmission Mode | Multi-point (up to 32 nodes; repeaters recommended for 16 or more nodes) | |
| Baud Rate | FT232RL: 300 bps ~ 2 Mbps |
|
| TTL (UART) | Operating Voltage | 3.3V / 5V (switchable) |
| Connector | Screw terminals | |
| Pins | TXD, RXD, GND, 5V/3.3V (VCC output, can power external device up to 50mA) | |
| Protection | Clamping diode, overvoltage/negative voltage protection, shock resistance | |
| Transmission Mode | Point-to-point | |
| Baud Rate | FT232RL: 300 bps ~ 2 Mbps |
|
| Indicators | PWR (Power) | Red power indicator: lights up when USB is connected and voltage is detected. |
| TXD (Transmit) | Green transmit indicator (TX): lights up when the USB port is transmitting data. | |
| RXD (Receive) | Blue receive indicator (RX): lights up when the device ports are transmitting data back. | |
| Operating Conditions | Temperature | -15℃ ~ 70℃ |
| Humidity | 5%RH ~ 95%RH (relative humidity) | |
| OS Support | Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7 | |
| Dimensions | Approximately 86.5mm x 71.6mm x 27.4mm (values may vary slightly depending on specific documentation) | |
Interface Description and Pinout
USB-B, DB9 Male for RS232, and screw terminals for RS485: A+, B-, GND; TTL: TXD, RXD, GND, VCC
- USB-B Port: for connecting to a PC or host device.
- RS232 Port (DB9 Male): standard serial communication.
- RS485 Terminals: A+, B-, GND for differential data transmission.
- TTL Terminals: TXD (transmit), RXD (receive), GND (ground), VCC (power output, 3.3V/5V selectable).
- Switches: for selecting TTL voltage level (3.3V/5V) and possibly for selecting interface mode (check specific model documentation).
Package Contents
- USB TO RS232/485/TTL Main Unit x1
- USB Type A to Type B Cable x1
- Detachable Screw Terminals (3-pin for RS485/some TTL) x1 (Typically)
- Detachable Screw Terminals (4-pin for TTL) x1 (Typically)
- User Manual (or link to online resources)
Note: package contents may vary slightly depending on the seller or specific version.
Resources
For detailed user manuals, drivers, and additional information, please refer to the official Waveshare Wiki page:
https://www.waveshare.com/wiki/USB_TO_RS232/485/TTL
Drivers for FT232RL chips can typically be downloaded from the Waveshare website or the chip manufacturer's site (FTDI/WCH).
