FTDI, Future Technology Devices International Ltd FT245BL-REEL

The FT245BL bridges USB data transfers and a bidirectional eight-bit parallel FIFO interface. External MCU, programmable-logic, or FPGA circuitry reads and writes data using the D0–D7 bus together with FIFO status and strobe signals. The chip handles USB protocol functions internally, avoiding a USB-specific firmware implementation in the attached logic.

The catalog lists 32-LQFP, matching FTDI's 32-lead, lead-free FT245BL package. FTDI's package drawing gives a 7 mm × 7 mm body, approximately 9 mm × 9 mm including leads, and 0.8 mm lead pitch. The REEL ordering format does not change the LQFP footprint; confirm the current controlled drawing and orientation before PCB release.

Assembly checks

• Confirm lead-free 32-pin LQFP and pin-1 mark.
• Match 0.8 mm pitch and controlled body dimensions.
• Place USB and supply decoupling per FTDI guidance.
• Check USB D+/D- routing and return path.

The registered 32-LQFP JPG is missing locally and returns HTTP 404 on the production site. This draft remains unpublished until that image is restored and verified.

The following signal groups are shown in FTDI's FT245BL LQFP-32 pinout. Use the manufacturer's numbered top-view drawing, not a related FT245R or QFN pin map, for the final footprint and schematic.

Throughput is a manufacturer feature figure, not a guaranteed application rate; system transfer performance depends on software, host scheduling, and bus use. Check the full datasheet's electrical and timing conditions.

Other FT245-family devices may provide similar USB FIFO functions but differ in package, pin map, EEPROM arrangement, clocking, supply requirements, driver features, and lifecycle. FT245BQ uses a different QFN footprint. Confirm every interface and qualification requirement before replacing FT245BL; no unverified internal substitute link or drop-in assertion is made.

FTDI publishes the FT245BL lead-free USB FIFO datasheet, including the LQFP-32 pinout and package drawing. FTDI's AN_116 tape-and-reel guide separately identifies the FT245BL LQFP reel option. Consult current FTDI documentation and product-change information for design and procurement decisions.

Verify FT245BL device marking, 32-lead LQFP geometry, pin-1 mark, lot traceability, lead-free requirements, and reel label against controlled documentation. USB identity stored in external EEPROM should be provisioned and validated for the end product. The listing alone does not establish authorized-channel provenance.

Follow FTDI's current USB, oscillator, reset, EEPROM, power-supply, and I/O-voltage design guidance. Verify host driver support for the target operating systems and test USB electrical compliance in the finished product. Do not publish until the correct registered package image is available and verified on production.