DM74ALS08中文资料

TL F 6271DM64ALS08 DM74ALS08 Quad 2-Input AND GateAugust1995 DM64ALS08 DM74ALS08Quad2-Input AND GateGeneral DescriptionThis device contains four independent gates each of whichperforms the logic AND functionThe DM64ALS08version features the same performanceas the standard version DM74ALS08with a guarantee overan extended temperature range(b40 C to a85 C)FeaturesY Switching specifications at50pFY Switching specifications guaranteed over full tempera-ture and V CC rangeY Advanced oxide-isolated ion-implanted Schottky TTLprocessY Functionally and pin for pin compatible with Schottkyand low power Schottky TTL counterpartY Improved AC performance over Schottky and low pow-er Schottky counterpartsY DM64ALS08guaranteed over extended temperatureb40 C to a85 CConnection DiagramDual-In-Line PackageTL F 6271–1Order Number DM64ALS08M DM64ALS08N DM74ALS08M DM74ALS08N or DM74ALS08SJSee NS Package Number M14A M14D or N14AFunction TableY e ABInputs OutputA B YL L LL H LH L LH H HH e High Logic LevelL e Low Logic LevelC1995National Semiconductor Corporation RRD-B30M115 Printed in U S AAbsolute Maximum RatingsSupply Voltage7V Input Voltage7V Operating Free Air Temperature RangeDM74ALS0 C to a70 C DM64ALS b40 C to a85 C Storage Temperature Range b65 C to a150 C Typical i JAN Package89 C W M Package120 C W Note The‘‘Absolute Maximum Ratings’’are those values beyond which the safety of the device cannot be guaran-teed The device should not be operated at these limits The parametric values defined in the‘‘Electrical Characteristics’’table are not guaranteed at the absolute maximum ratings The‘‘Recommended Operating Conditions’’table will define the conditions for actual device operationRecommended Operating ConditionsSymbol ParameterDM64ALS08DM74ALS08Units Min Nom Max Min Nom MaxV CC Supply Voltage4 555 54 555 5VV IH High Level Input Voltage22VV IL Low Level Input Voltage0 80 8VI OH High Level Output Current b0 4b0 4mAI OL Low Level Output Current88mAT A Free Air Operating Temperature b4085070 C Electrical Characteristicsover recommended operating free air temperature range All typical values are measured at V CC e5V T A e25 CSymbol Parameter Conditions Min Typ Max UnitsV IK Input Clamp Voltage V CC e4 5V I I e b18mA b1 5VV OH High Level Output I OH e b0 4mAV CC b2V Voltage V CC e4 5V to5 5VV OL Low Level Output V CC e4 5V I OL e4mA0 250 4V Voltage IOL e8mA0 350 5VI I Input Current Max V CC e5 5V V IH e7V0 1mAInput VoltageI IH High Level Input Current V CC e5 5V V IH e2 7V20m AI IL Low Level Input Current V CC e5 5V V IL e0 4V b0 1mAI O Output Drive Current V CC e5 5V V O e2 25V b30b112mAI CC Supply Current V CC e5 5V Outputs High1 32 4mAOutputs Low2 24mA Switching Characteristicsover recommended operating free air temperature range(Note1)Symbol Parameter ConditionsDM64ALS08DM74ALS08Units Min Max Min Maxt PLH Propagation Delay Time V CC e4 5V to5 5V414414ns Low to High Level Output R L e500Xt PHL Propagation Delay Time C L e50pF310310nsHigh to Low Level OutputNote1 See Section5for test waveforms and output load2Physical Dimensions inches(millimeters)S O Package(M)Order Number DM64ALS08M or DM74ALS08MNS Package Number M14ASmall Outline Package(SJ)Order Number DM74ALS08SJNS Package Number M14D3D M 64A L S 08 D M 74A L S 08Q u a d 2-I n p u t A N D G a t ePhysical Dimensions inches (millimeters)(Continued)Molded Dual-In-Line Package (N)Order Number DM64ALS08N or DM74ALS08NNS Package Number N14ALIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or 2 A critical component is any component of a life systems which (a)are intended for surgical implant support device or system whose failure to perform can into the body or (b)support or sustain life and whose be reasonably expected to cause the failure of the life failure to perform when properly used in accordance support device or system or to affect its safety or with instructions for use provided in the labeling can effectivenessbe reasonably expected to result in a significant injury to the userNational Semiconductor National Semiconductor National Semiconductor National Semiconductor CorporationEuropeHong Kong LtdJapan Ltd1111West Bardin RoadFax (a 49)0-180-530858613th Floor Straight Block Tel 81-043-299-2309。