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SparkFun USB to RS-485 Converter, Fully Equipped with SP3485 RS-485 transceiver and FT232RL USB UART IC -7V to +12V Common-Mode Input Voltage Range. Board Dimensions: 1.55x0.9 inches

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Management number 217020107 Release Date 2026/04/19 List Price $10.38 Model Number 217020107
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This is the newest revision of this board and this breakout board pairs an SP3485 RS-485 transceiver with an FT232RL USB UART IC to convert a USB stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. The TXDEN pin of the FT232RL is connected to the transmit and receive enable inputs of the SP3485, this line is used to control the transmission mode of the RS-485 transceiver. With the proper drivers installed, the FT232RL will enumerate as a virtual COM port; the drivers are available for Windows, Mac and Linux. This breakout board includes the SP3485, FT232, TX/RX/RTS LEDs, Mini-B USB connector, filter capacitors, and other components shown on the schematic. We've broken out the RS485 output to three different connections: (1) an RJ-45 connector, (2) a 3-pin 3.55mm screw terminal, and (3) a 3-pin 0.1" pitch header; none of these output connectors come populated.

  • This is the newest revision of this board and this breakout board pairs an SP3485 RS-485 transceiver with an FT232RL USB UART IC to convert a USB stream to RS-485.
  • The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. The TXDEN pin of the FT232RL is connected to the transmit and receive enable inputs of the SP3485, this line is used to control the transmission mode of the RS-485 transceiver.
  • This Board Features: Operates from USB supply. RX, TX, and RTS LED indicators.Mini-B USB connector. USB power and RX/TX lines broken out to a 0.1" pitch header.
  • This breakout board includes the SP3485, FT232, TX/RX/RTS LEDs, Mini-B USB connector, filter capacitors, and other components shown on the schematic. We've broken out the RS485 output to three different connections: (1) an RJ-45 connector, (2) a 3-pin 3.55mm screw terminal, and (3) a 3-pin 0.1" pitch header; none of these output connectors come populated.
  • With the proper drivers installed, the FT232RL will enumerate as a virtual COM port; the drivers are available for Windows, Mac and Linux.
UPC 845156006212
Brand SparkFun
Unit Count 1.0 Count
Item Weight 4.5 Grams
Manufacturer SparkFun Electronics
Model Number BOB-09822
BuiltIn Media USB Mini-B
Input Voltage 12 Volts
Connector Type Mini USB
Current Rating 10 Amps
Item Dimensions 1.46 x 2.13 x 0.28 inches
Number of Items 1
Number of Ports 1
Power Plug Type No Plug
Package Quantity 1
Compatible Devices Actuator, Building Automation Device, Industrial Automation Device, PLC, Sensor
Warranty Description 30 Days

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