633 MHz QDR-II+ SRAM for high-throughput designs
The Infineon CY7C2568XV18-633BZXC is a 72 Mbit QDR-II+ synchronous SRAM organized as 4M x 18 bits, clocked at 633 MHz over a parallel interface. This double-data-rate architecture transfers data on both edges, giving it effective throughput well above single-data-rate parts at the same pin count. It operates from a 1.7 V supply and comes in a 165-FBGA (13x15 mm) surface-mount package.
What the 633 MHz clock buys you
Compared to the 2M x 36 CY7C2565XV18-633BZC, this part trades bus width for depth: 4M words instead of 2M, but with an 18-bit data bus instead of 36. Choose this one when the system needs deeper addressing per chip-select rather than a wider word fetch per cycle.
Temperature grade and where it fits
Rated for 0°C to 70°C ambient, this is a commercial-temperature part — suited for indoor networking gear, test equipment, server-class compute blades, and telecom line cards that live in climate-controlled racks. Not for outdoor enclosures, automotive engine bays, or factory-floor cabinets without additional thermal management.