What this QDR II SRAM does in the system
The Infineon CY7C1414KV18-250BZXC is a 36 Mbit synchronous SRAM using QDR II architecture — separate read and write ports eliminate bus-turnaround dead cycles, so back-to-back throughput hits 250 MHz without wait states. Organized 1M x 36, it is sized for high-bandwidth packet buffers in networking line cards, telecom switches, and test equipment where every clock cycle carries data.
250 MHz clock — what it buys the design
At 250 MHz, each port delivers 1 GB/s of bandwidth (36 bits wide). That timing margin matters when the FPGA or ASIC on the other side of the bus runs at the same rate — the QDR II interface keeps setup and hold windows tight enough for zero-wait back-to-back reads and writes. The 1.7 V to 1.9 V core supply keeps I/O swing small, which helps signal integrity on a dense PCB.
Lifecycle and sourcing reality
This part is EOL hot — Infineon has issued end-of-life notification. The factory last-time-buy window is closed or closing. For BOM freeze planning, treat this as a surplus-channel part.
Temperature grade and environment
Rated 0°C to 70°C — commercial temperature range. That limits deployment to indoor, air-conditioned racks: central offices, data centers, lab instruments. Not for outdoor telecom cabinets or factory floors without climate control.