The AT68166HT from Microchip Technology is a Space Qualified Memory that is organized as 512K x 16 bits and a storage capacity of 16 Mb. This CMOS static RAM has an operating voltage of 3.3/5 V with a low power consumption of 15 mW (standby) and up to 595 mW (active max at 20 ns). It has a fast access time of 18-25 ns over the full military temperature range and an ESD better than 2000 V. The memory is designed on 0.25 µm radiation hardened process and is tested up to a Total Dose of 300 krads (Si) according to MIL-STD-883 Method 1019. It requires a standby supply current of 6-10 mA with a dynamic operating current range of 12-170 mA (read) and 105-145 mA (write). The memory features TTL-compatible inputs and outputs and has a 950 Mils Wide MQFPT68 package. It is ideal for fast computing and low power consumption applications such as aerospace electronics, portable instruments and space applications.