SRAM Chip Async Single 3.3V 4M-Bit 256K x 16 15ns 44-Pin SOJ
Standard SRAM, 256KX16, 15ns, CMOS, PDSO44, 0.400 INCH, LEAD FREE, SOJ-44
4Mb SDR SRAM, 15ns Access Time, 3.6V 3V, SOJ Package, -40°C to 85°C