333 MHz DDR II+ SRAM for high-throughput line cards
The CY7C1520KV18-333BZXI is a 72Mbit synchronous SRAM organized as 2M x 36, clocked at 333 MHz with a DDR II+ interface — double-data-rate on both read and write, no dead cycles between back-to-back transactions. That 333 MHz clock delivers a peak bandwidth of 2.4 GB/s (36 bits x 333 MHz x 2 edges), which is the number you use for your worst-case packet buffer fill rate.
Industrial temperature grade and board-level fit
The 165-ball FBGA (13x15 mm) package is a 1.0 mm ball-pitch array; you need at least a 6-layer PCB to route the 36 data lines plus address and control without signal-integrity trouble at 333 MHz. Supply tolerance is 1.7V to 1.9V — the nominal 1.8V rail must stay inside that window including ripple. A 1.8V LDO with 1% accuracy and 50 mV dropout covers it; a switching regulator with 30 mV p-p ripple at 1 MHz is fine if the output cap ESR keeps the transient under 50 mV.
The base product number CY7C1520 covers multiple speed grades and temperature options; this 333 MHz industrial-grade variant is the one to order for new designs that need the full 333 MHz throughput. Submit an RFQ for the exact quantity and ship-to location.