Spartan?-6 LX and LXT FPGAs are available in various speed grades， with -3 having the highest performance. The DC and AC electrical parameters of the Automotive XA Spartan-6 FPGAs and Defense-grade Spartan-6Q FPGAs devices are equivalent to the commercial specifications except where noted. The timing characteristics of the commercial （XC） -2 speed grade industrial device are the same as for a -2 speed grade commercial device. The -2Q and -3Q speed grades are exclusively for the expanded （Q） temperature range. The timing characteristics are equivalent to those shown for the -2 and -3 speed grades for the Automotive and Defense-grade devices. Spartan-6 FPGA DC and AC characteristics are specified for commercial （C）， industrial （I）， and expanded （Q） temperature ranges. Only selected speed grades and/or devices might be available in the industrial or expanded temperature ranges for Automotive and Defense-grade devices. References to device names refer to all available variations of that part number （for example， LX75 could denote XC6SLX75， XA6SLX75， or XQ6SLX75）。 The Spartan-6 FPGA -3N speed grade designates devices that do not support MCB functionality. All supply voltage and junction temperature specifications are representative of worst-case conditions. The parameters included are common to popular designs and typical applications.