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
SRAM 4M, 3.3V, 15ns, FAST 256K x 16 Asyn SRAM