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USB - To - Serial 2port Rs-422/485 Hub

USB - To - Serial 2port Rs-422/485 Hub

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The UC4852 is the converter that transform the USB port to your computer into two asynchronous RS-422 or RS585 serial ports. This unit supports RS422/485 Auto Detect & Switch technology so when there is defined activity on the connected serial device, the convert automatically switches to the active serial port. Compatible with both USB specification 1.1 and 2.0, these device can transfer speeds up to 115.2Kbps.


  • Connects USB computer port to external serial devices using a DB-9 Serial interface for RS-422 or RS-485 communication.
  • Full compliance with the USB v1.1 and USNv2.0 specifications
  • Max data transfer rate up to 115Kbps
  • Compatible with Window 2000 through Vista as well as Linux 2.6x or higher
  • Dual dat buffers for upstream and downstream data flow
  • Support RS-485 auto RTS Signal Control technology
  • Auto detect and switch technology
  • Hot-Swap and plug-n-play supported
  • Wake on line ans power management supported


Power On 1 (Orange)
Port Status 2 (Green)
Power Consumption 0.5W
USB Specification USB 1.1 and USB 2.0 Compatible
Data Rate 115.2 Kbps(Max.)
Power 1 x DC Jack
USB 1 x USB Type B Female
Serial 2 x DB-9 Male
Operation Temperature 32~122 F (0~50C)
Storage Temperature -4~140 F (-20~60C)
Humidity 0~80% RH, Non-condensing
Device Connection 2
FIFO 16 byte Hardware FIFO
RS-422/RS-485 Selection Auto-detect and Switch
RS-422 Signal TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND
RS-485 Signal Data+/-, GND
Data Bit 5,6,7,8
Stop Bit 1, 1.5, 2
Power Mode Bus Powered(Power adapter is optional)