The Infineon CY7C1312KV18-250BZXCT is an 18Mbit synchronous QDR II SRAM organized as 1M x 18 bits, clocked at 250 MHz. The QDR II architecture eliminates bus-turnaround dead cycles, sustaining back-to-back read and write operations on separate ports — a fit for high-throughput buffer applications in networking switches, telecom line cards, and packet processors where every clock cycle counts.
The part is supplied in a 165-ball FBGA (13x15 mm body), surface-mount only. No extended-temperature variant is listed; if the BOM calls for industrial or automotive ambient, this is not the drop-in.