144 Mbit QDR II SRAM at 333 MHz — what the clock buys
The CY7C1612KV18-333BZXC is a 144 Mbit synchronous QDR II SRAM from Infineon (formerly Cypress), organized as 8M x 18. The 333 MHz clock rate gives a 1.5 ns cycle time on the data bus, which translates to a peak read-write bandwidth that keeps a high-end network processor or FPGA local buffer fed without wait states. QDR II architecture separates read and write data ports, so back-to-back transactions of opposite direction incur no bus-turnaround penalty — the throughput advantage over a common DDR SRAM is real when the traffic pattern is mixed. The parallel memory interface keeps pin count high but latency low — no serialization overhead. All this comes in a 165-ball FBGA (15x17 mm) footprint, surface-mount only.
That rules out outdoor base stations, engine bays, and unheated industrial cabinets. This part belongs in a temperature-controlled data-center switch, a test-equipment chassis with active cooling, or a lab-grade instrument.
Package reality: 165-ball FBGA
The supplier device package is 165-FBGA (15x17). Board-level rework needs a hot-air station with a nozzle sized for that body, and X-ray inspection after soldering is standard practice to catch hidden shorts or voids.