What this QDR II SRAM does in the system
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.
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.
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.