SRAM Chip Sync Single 3.3V 4.5M-Bit 128K x 36 4.2ns 165-Pin CABGA T/R
IDT 71V3558SA133BQG8 4.5Mb RAM, 133MHz, 18b, Parallel Interface, TBGA Package
IDT 4Mb SDR RAM, 133MHz, 3.3V, Surface Mount, BGA
Commercial 3.3V 119-Pin BGA ZBT SRAM