Synchronous FIFO for 5 V data-buffering pipelines
The Infineon (formerly Cypress) CY7C4251-10AXI is a synchronous FIFO memory organized as 8K x 9 bits (72 Kbit total), designed for unidirectional data buffering in 5 V logic systems. It clocks at 100 MHz with an 8 ns access time, supporting depth and width expansion for wider or deeper queues without external logic.
The 100 MHz data rate means the FIFO can sustain a 100 MHz read/write cycle on the same clock edge, with the first word appearing 8 ns after the rising edge. That 8 ns access time is the window the controller must meet for setup-and-hold.
Obsolete — last-time-buy and surplus sourcing
Buyers should verify stock position and lead time at quote time, and consider qualifying a pin-compatible synchronous FIFO from the same CY7C family for new production runs.
5 V supply and industrial temperature — deployment context
Programmable flags are supported, which allows the designer to set almost-empty and almost-full thresholds for flow control without polling the status flags. No retransmit capability and no FWFT (First-Word Fall-Through) support — the first word is not available until the first read cycle completes.