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Change UART to USB in an existing device!

New DB9-USB connectors from FTDI enable to use a USB port in devices with UART interface without necessity of a PCB redesign.
This is an archive article published 11/15/2011. Some information may no longer be up to date and in line with the current state. Please contact us in case of interest.

By simple using of new DB9 USB connectors instead of original DB9 UART connectors, you can achieve virtually immediately a USB connectivity of your existing devices. If you from any reasons don´t wish to redesign a PCB, then these connectors are ideally suitable for you. Connectors DB9 USB contain a complete USB/UART converter circuit in their bode. So far these connectors were available in the RS232 logic levels version. Novelty from company FTDI are 4 new types supporting also 3.3V and 5V logic levels - DB9-USB-D3 and DB9-USB-D5, with a USB male or female connector.

DB9 USB family now contains 6 types for all 3 the most common logic levels, in a version with Male and Female USB connector. New connectors offer the same utilization comfort like other USB products from FTDI, DB9_USB datasheet and in the AN_149 application note. Free available drivers enable to use DB9 USB connectors as a Virtual COM Port (VCP).

Change UART to USB in an existing device!
Change UART to USB in an existing device!
Advantages / Features:
  • complete USB interface in a DB9 sized connector
  • available in versions with RS232, 5V and 3.3V logic levels
  • transfer rate up to 1Mbaud(RS232) and 3Mbaud(3.3 and 5V version)
  • temperature range -40 to +85°C
  • extensive customer support from FTDI
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