Synchronous FIFO for 5 V data buffering
The Infineon CY7C4251-15AXCT is a synchronous FIFO memory organized as 72K (8K x 9) words, designed for high-speed data buffering in systems that need to match data rates between a producer and a consumer clock domain.
Obsolete — last-time-buy and sourcing
The 66.7 MHz data rate and 10 ns access time define the throughput ceiling — this FIFO can sustain back-to-back reads and writes at that clock rate without dead cycles, which is the main reason to pick a synchronous FIFO over an asynchronous one. The 72K (8K x 9) depth gives you 8,192 words of 9 bits each; the extra bit is typically used for a parity or control flag.
The Tape & Reel (TR) packaging is the shipping medium; the device itself is the TQFP. The footprint is standard for 32-pin TQFP, so layout is straightforward.