More information about the XC6VLX240T-1FF1156I: Virtex-6 FPGAs are available in -3, -2, -1, and -1L speed grades, with -3 having the highest performance. Virtex-6 FPGA DC and AC characteristics are specified in commercial, extended, industrial, and military temperature ranges. Unless otherwise noted, all the DC and AC electrical parameters are the same for a particular speed grade (that is, the timing characteristics of a -1 speed grade industrial device are the same as for a -1 speed grade commercial device). However, only selected speed grades and/or devices are available in the extended, industrial, or military temperature ranges. All supply voltage and junction temperature specifications are representative of worst-case conditions. The parameters included are common to popular designs and typical applications.