Virtex™-5 FPGAs are available in -3, -2, -1 speed grades,with -3 having the highest performance.Virtex-5 DC and AC characteristics are specified for bothcommercial and industrial grades. Except the operatingtemperature range or unless otherwise noted, all the DCand AC electrical parameters are the same for a particularspeed grade (that is, the timing characteristics of a -1 speedgrade industrial device are the same as for a -1 speed gradecommercial device). However, only selected speed gradesand/or devices might be available in the industrial range.
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