166MHz 8.5ns 2M x 18 36Mb NBT pipelined/flow through SRAM 225MHz 6.5ns 2M x 18 36Mb NBT pipelined/flow through SRAM 133MHz 11ns 2M x 18 36Mb NBT pipelined/flow through SRAM 150MHz 10ns 2M x 18 36Mb NBT pipelined/flow through SRAM 200MHz 7.5ns 2M x 18 36Mb NBT pipelined/flow through SRAM