550 MHz QDR II+ — what the clock buys
The CY7C1165KV18-550BZXC: That clock rate defines the peak read-write throughput for designs that need back-to-back bus access without dead cycles — the QDR II+ architecture eliminates the read-write turnaround penalty that standard synchronous SRAM incurs, so the bus stays full every cycle. This part targets high-bandwidth data-path applications: network packet buffers, switch fabric queues, and telecom line-card look-up tables where the memory interface is the throughput bottleneck.
Supply and temperature — indoor-only envelope
That limits the part to controlled indoor environments — telecom central offices, data-centre line cards, and benchtop test equipment.
Package — 165-ball FBGA, 13x15 mm
Supplied in a 165-ball FBGA with a 13x15 mm body. Surface-mount only.
Last-time-buy — procurement window is closing
Infineon has placed this part into Last Buy status. That means the manufacturer has announced a final order window; after that date the part will no longer be produced. For a BOM that depends on this exact density and speed grade, the procurement decision is time-sensitive — order the lifetime buy quantity before the LTB deadline expires. After that, supply shifts entirely to the surplus and broker channel, where pricing and availability are unpredictable.