72 Mbit DDR II SRAM — 300 MHz, 4M x 18, last-time buy
The Infineon CY7C1518KV18-300BZXI is a 72 Mbit synchronous DDR II SRAM organized 4M x 18, clocked at 300 MHz over a parallel interface. It operates from a 1.7 V to 1.9 V core supply and is rated for the industrial temperature range of -40°C to 85°C. Housed in a 165-ball FBGA (13x15 mm), this part targets high-throughput buffer applications in networking switches, base stations, and test instrumentation where back-to-back read/write cycles with zero dead cycles matter.
The 165-FBGA footprint (13x15 mm) is common across the 72 Mbit density family, but the ball map differs between x18 and x36 organizations — the CY7C1515KV18-250BZXI (2M x 36) shares the same package but a different pinout, so a board spin is required if migrating between width options.
