FT245B - USB Interface Full Speed to Parallel FIFO IC

FTDI's FT245BL is the 2nd generation of popular USB FIFO devices which enables USB conversion to a microprocessor without the hassle.

*This is a previous generation device, the FTDI X-Chip is recommended for new designs.

FT245BL-REEL100 available to buy from our Webshop

*This is a previous generation device, the FTDI X-Chip is recommended for new designs.

This device not only adds extra functionality to its predecessor and reduces external component count, but also maintain a high degree of pin compatibility with the original, making it easy to upgrade or cost-reduce existing designs. The FT245BL makes light work of taking your new (or existing) designs to USB as it runs standalone and therefore requires no processor overhead & no embedded USB stack.

As with all FTDI devices the hard work has been done for you, just design in the chip and choose the royalty-free drivers which suit your application best.

The FT245BL can interface to DSP's and u-Processors to offer typical throughputs of 300K-1Mbit/sec depending on application & driver choice.

Key Features:

  • Single Chip USB <=> parallel FIFO bi-directional data transfer
  • Data transfer rate of up to 1M Byte/second (D2XX drivers)
  • Data transfer rate of up to 300K Byte/second (VCP drivers)
  • Simple to interface to MCU/PLD/FPGA logic with a 4-wire handshaking interface
  • Entire USB protocol handled on-chip: no USB-specific firmware programming required
  • FTDI's royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases
  • USB 1.1 and USB 2.0 compatible
  • USB VID, PID , serial number and product description strings in external EEPROM
  • Compact 32-LD LQFP package
  • Available as a Lead-free device compliant to EU directive 2002/95/EG RoHS

For sales and technical development support from our in-house engineering team, please contact the Alpha Micro team.

  • Single Chip USB <=> parallel FIFO bi-directional data transfer
  • Data transfer rate of up to 1M Byte/second (D2XX drivers)
  • Data transfer rate of up to 300K Byte/second (VCP drivers)
  • Simple to interface to MCU/PLD/FPGA logic with a 4-wire handshaking interface
  • Entire USB protocol handled on-chip: no USB-specific firmware programming required
  • FTDI's royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases
  • 384 Byte FIFO Tx buffer/128 Byte FIFO Rx buffer for high data throughput
  • New send immediate support via SI pin for optimised data throughput
  • Support for USB suspend/resume through PWREN# and WAKEUP pins
  • Support for high power USB bus powered devices through PWREN# pin
  • Adjustable Rx buffer timeout
  • Built-in support for event characters
  • Integrated level converter on FIFO and control signals for interfacing to 5V and 3.3V logic
  • Integrated 3.3V regulator for USB IO
  • Integrated Power-On-Reset circuit
  • Integrated 6MHz - 48Mhz clock multiplier PLL
  • USB Bulk or Isochronous data transfer modes
  • New Bit-Bang Mode allows the data bus to be used as an 8 bit general purpose IO port without the need for MCU or other support logic
  • 4.35V to 5.25V single supply operation
  • UHC/OHCI/EHCI host controller compatible
  • USB 1.1 and USB 2.0 compatible
  • USB VID, PID , serial number and product description strings in external EEPROM
  • EEPROM programmable on-board via USB
  • Compact 32-LD LQFP package
  • Available as a Lead-free device compliant to EU directive 2002/95/EG RoHS
PART NUMBER PACKAGE TYPE PACK SIZE
FT245BL-REEL100 32-pin LQFP Reel of 100
FT245BL-REEL250 32-pin LQFP Reel of 250
FT245BL-REEL500 32-pin LQFP Reel of 500
FT245BL/TR 32-pin LQFP Reel of 1000
FT245BL-TRAY 32-pin LQFP Tray of 250
FT245BQ-REEL No longer offered by FTDI

*This is a previous generation device, the FTDI X-Chip is recommended for new designs.

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Last updated: 21 May 2018