Designation:F744M−16StandardTestMethodforMeasuringDoseRateThresholdforUpsetofDigitalIntegratedCircuits(Metric)1ThisstandardisissuedunderthefixeddesignationF744M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthemeasurementofthethresh-oldlevelofradiationdoseratethatcausesupsetindigitalintegratedcircuitsonlyunderstaticoperatingconditions.TheradiationsourceiseitheraflashX-raymachine(FXR)oranelectronlinearaccelerator(LINAC).1.2Theprecisionofthemeasurementdependsonthehomogeneityoftheradiationfieldandontheprecisionoftheradiationdosimetryandtherecordinginstrumentation.1.3Thetestmaybedestructiveeitherforfurthertestsorforpurposesotherthanthistestiftheintegratedcircuitbeingtestedabsorbsatotalradiationdoseexceedingsomepredeter-minedlevel.Becausethisleveldependsbothonthekindofintegratedcircuitandontheapplication,aspecificvaluemustbeagreeduponbythepartiestothetest(6.8).1.4Setup,calibration,andtestcircuitevaluationproceduresareincludedinthistestmethod.1.5Proceduresforlotqualificationandsamplingarenotincludedinthistestmethod.1.6Becauseofthevariabilityoftheresponseofdifferentdevicetypes,theinitialdoserateanddeviceupsetconditionsforanyspecifictestisnotgiveninthistestmethodbutmustbeagreeduponbythepartiestothetest.1.7ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E666PracticeforCalculatingAbsorbedDoseFromGammaorXRadiationE668PracticeforApplicatio...
