133MHz 8.5ns 512K x 18 8Mb pupeLined and fLow through sync NBT SRAM 150MHz 7.5ns 512K x 18 8Mb pupeLined and fLow through sync NBT SRAM 166MHz 7ns 512K x 18 8Mb pupeLined and fLow through sync NBT SRAM 200MHz 6.5ns 512K x 18 8Mb pupeLined and fLow through sync NBT SRAM 225MHz 6ns 512K x 18 8Mb pupeLined and fLow through sync NBT SRAM 250MHz 5.5ns 512K x 18 8Mb pupeLined and fLow through sync NBT SRAM