L4977A

7A SWITCHING REGULATOR

DESCRIPTION TheL4977Aisastepdownmonolithicpowerswitchingregulatordelivering7Aatavoltagevariablefrom5.1to40V. RealizedwithBCDmixedtechnology,thedeviceusesaDMOSoutputtransistortoobtainveryhighefficiencyandveryfastswitchingtimes.FeaturesoftheL4977Ainc

C4977

FastSwitchingSpeed

1.Collector-EmitterSustainingVoltage-:VCEO(SUS)=400V(Min) 2.FastSwitchingSpeed 3.Collector-EmitterSaturationVoltage-:VCE(sat)=0.8V(Max.)@IC=4.0A

NTE4977

SurgeClamping,TransientOvervoltageSuppressorBidirectional

Description: TheNTE4900seriesofsiliconTransientSuppressorsdesignedtoprotectvoltagesensitivecomponentsfromhighenergyvoltagetransients.Transientovervoltagesuppressordeviceshavebecomeveryimportantasaconsequenceoftheirhighsurgecapability,extremelyfastresponsetime

PE4977

SCMaleConnectorClamp/SolderAttachmentForRG218

SAA4977H

Besic

2GENERALDESCRIPTION TheSAA4977HisavideoprocessingICprovidinganalogYUVinterfacing,videoenhancingfeatures,memorycontrollingandanembedded80C51microprocessorcore.Itisapplicableespeciallyforfieldrateup-conversion(50to100Hzor60to120Hz)incooperationwitha2.9

SZN4977

6.8??390VOLTSZENERDIODES

FEATURES: •HermeticallyGlassSealed •HighPowerDissipation5W •TightVoltageTolerance5 •ForotherVoltage,Power,orToleranceConsultFactory. •TX,TXV,andS-LevelScreeningAvailable5/. •Replacementfor1N4954–1N4996

SZN4977

5W6.8??390VOLTSZENERDIODES

TEW4977

CEPT/T1Input/OutputTransformer

TEW4977&-1aredesignedandapprovedtobeusedasanInputtransformerwiththefollowingdevices. Typicalapplicationsare: •PrimaryrateISDNnetworknodes. •PBXorcomputertoT1/CEPTDigitaltrunks. •HighspeeddatalinkusingT1/CEPTDigitaltrunk. •TDMMultiplexers.