638

SurfaceMountable

638AFJ

AccessControl,16c(#18-3pr,#16-4c,#18-6c),Shielded,OuterJacket,CMP

ProductDescription AccessControlCable,Plenum-CMP,3-18AWGpairs,4-16AWGconductors,4-18AWGconductors,2-18AWGconductors,Allconductorsstrandedbare copperwithFlamarrest®insulation,EachcablehasoverallBeldfoil®shieldandFlamarrest®jackets,OverallFlamarrest®jacket

638AFS

AccessControl,16c(#18-3pr,#16-4c,#18-6c),Shielded,BananaPeel®,CMP

ProductDescription AccessControlCable,Plenum-CMP,3-18AWGpairs,4-16AWGconductors,4-18AWGconductors,2-18AWGconductors,Allconductorsstrandedbare copperwithFlamarrest®insulation,EachcablehasoverallBeldfoil®shieldandFlamarrest®jacket,BananaPeel®Nooveralljacket

MAX638

48V-to-5VDC-DCConverterUsingMAX638SwitchingStep-DownRegulatorBorrowsPowerfromPhoneLines

Thetelephonesubscriberlinesprovide-48Vvoltage,buttheequipmentonthecustomerpremisesisusuallyoperatedfromalowervoltage.ThecircuitusingMAX638illustratesaconversionofthisavailablevoltageto5Vrequiredinmodems,telephonetestsets,andotherportablesystemsconnected

MAX638

5V/AdjustableCMOSStep-downSwitchingRegulator

GeneralDescription TheMAX638step-downswitchingregulatorisdesignedforminimumcomponent,lowpower,DC-DCconversion. Applications   EfficientDC-DCStep-DownRegulation   LinearVoltageRegulatorReplacement   +12Vto+5VConversion   BatteryLifeExtension   PortableInstrumen

MAX638AC/D

5V/AdjustableCMOSStep-downSwitchingRegulator

GeneralDescription TheMAX638step-downswitchingregulatorisdesignedforminimumcomponent,lowpower,DC-DCconversion. Applications   EfficientDC-DCStep-DownRegulation   LinearVoltageRegulatorReplacement   +12Vto+5VConversion   BatteryLifeExtension   PortableInstrumen