USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485

Description
Whether you need to interface with various serial protocols, this USB to Multi-Protocol Serial adapter has you covered. It supports RS232, TTL UART, RS485, and RS422, all with quick-connect screw terminals, eliminating the need for soldering or special cables.

Simply plug the adapter into a USB A port on your computer, then use a Phillips screwdriver to open the terminal and insert solid or stranded-core wires. The USB A connector is reversible, ensuring that labels and LEDs are always facing you.

At its core, the adapter features an FTDI FT231 USB to serial converter that operates on 5V logic and converts UART serial signals into various formats. It supports baud rates ranging from 300 to 3 Mbaud. FTDI drivers are typically built into most operating systems, but free Virtual COM Port (VCP) drivers are available if needed.

For RS-232 signals, a UM213 signal level converter is used, handling ±8V logic level I/O with all eight RS-232 signals exposed. The RS-232 converter can manage speeds of up to 250 kbps.

The UART side connects directly to the FT231, exposing RX/TX and 5V/3V/GND lines, with a 5V logic level. For RS-485/RS-422, the UART RX/TX lines connect to MAX485 chips.

Additionally, you’ll find 5V and 3V power supplies (with a matching ground) to power small projects—the 5V supply is derived from USB (up to 500mA, though you may draw up to 1A) and the 3.3V supply comes from the FT231X with a 50mA output.

LED indicators include a red 'Power Good' light and a green 'Data Transmission' light.

Please Note: Only one USB-serial chip is included, so you can use one protocol at a time!