InLine® USB to Serial RS232 Converter with Isolator

The InLine® USB to serial RS232 converter with isolator connects computers with a USB-A port to serial RS232 devices via a 4-pin screw terminal. It provides galvanic isolation up to 2.5 kV, reducing potential differences, ground loops, and electrical interference for enhanced operational reliability. The adapter uses the FTDI FT232RNL chipset and supports baud rates from 300 to 921,600 b/s.

Key features

• Galvanic isolation up to 2.5 kV between USB and RS232
• FTDI FT232RNL chipset for stable data transmission
• Connects via 4-pin screw terminal (GND, TX, RX, GND)
• Virtual COM port for easy integration
• Integrated isolated DC/DC converter, 200 mA PTC fuse, ESD protection, and TVS diodes
• Status indicators: PWR, TXD, RXD
• Wide operating temperature range: -40 °C to +85 °C

Specifications

• Brand: InLine
• MPN: 33307B
• Product type: USB to Serial Adapter
• Serial interface type: RS-232
• Chipset: FTDI FT232RNL
• Host connection: USB-A male
• Device connection: RS232 screw terminal
• Pin configuration: GND, TX, RX, GND
• Baud rate: 300 to 921,600 bps
• Transmission mode: Point-to-point
• Maximum RS232 cable length: up to approx. 15 m
• Maximum USB cable length: up to approx. 5 m
• Signal isolation: ADI magnetic isolation technology
• Isolation voltage: up to 2.5 kV
• Power supply isolation: integrated isolated DC/DC converter
• USB protection: 200 mA PTC fuse, ESD protection
• RS232 protection: TVS diode, protective diodes
• Status indicators: PWR, TXD, RXD
• Supported operating systems: Windows 7/8/8.1/10/11, Linux, macOS, Android
• Operating temperature: -40 °C to +85 °C
• Humidity: 5 % to 95 % RH, non-condensing