Obsolete — last-time-buy and sourcing
The CY7C419-15JXC is listed as obsolete.
15 ns access time — bus timing fit
The 15 ns access time supports a 50 MHz data rate.
256 x 9 organization — what it means
The 2.25 Kbit memory is organized as 256 words by 9 bits wide.
Asynchronous operation and retransmit
This is an asynchronous FIFO — read and write clocks are independent, so it can bridge two clock domains without a PLL. The retransmit capability lets the controller reset the read pointer back to the beginning of the stored data without a full flush, useful in packet-based systems where a failed transmission needs a replay from the buffer.
Housed in a 32-PLCC (J-Lead) surface-mount package, this part uses the legacy PLCC footprint — verify your board's land pattern matches the 11.43x13.97 mm body.
Supply and current budget
Maximum supply current is 65 mA.