SN74BCT245DBLE资料

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002SN54BCT245, SN74BCT245OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTSD3-State Outputs Drive Bus Lines or BufferDMemory Address RegistersESD Protection Exceeds JESD 22– 2000-V Human-Body Model (A114-A)SN54BCT245...J OR W PACKAGESN74BCT245...DB, DW, N, NS, OR PW PACKAGE(TOP VIEW)descriptionThese octal bus transceivers are designed forasynchronous communication between databuses. The devices transmit data from the A busto the B bus or from the B bus to the A bus,depending upon the level at the direction-control(DIR) input. The output-enable (OE) input can beused to disable the device so the buses areeffectively isolated.DIRA1A2A3A4A5A6A7A8GND12345671020191817161514131211VCCOEB1B2B3B4B5B6B7B8 SN54BCT245...FK PACKAGE(TOP VIEW)A2A1DIRVCCOEA3A4A5A6A74567832120191817161514910111213B1B2B3B4B5ORDERING INFORMATIONTAPDIP – NSOICDWSOIC – DW0°C to 70Cto70°CSOP – NSSSOP – DBTSSOP – PWCDIP – J–55°C to 125°CCFP – WLCCC – FKPACKAGE†TubeTubeTape and reelTape and reelTape and reelTape and reelTubeTubeTubeORDERABLEPART NUMBERSN74BCT245NSN74BCT245DWSN74BVT245DWRSN74BCT245NSRSN74BCT245DBRSN74BCT245PWRSNJ54BCT245JSNJ54BCT245WSNJ54BCT245FKTOP-SIDEMARKINGSN74BCT245NBCT245BCT245BT245BT245SNJ54BCT245JSNJ54BCT245WSNJ54BCT245FK†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines areavailable at www.ti.com/sc/package.Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.PRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.Copyright  2002, Texas Instruments IncorporatedOn products compliant to MIL-PRF-38535, all parameters are testedunless otherwise noted. On all other produts, produtionprocessing does not necessarily include testing of all parameters.POST OFFICE BOX 655303 DALLAS, TEXAS 75265•A8GNDB8B7B61元器件交易网www.cecb2b.com

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002SN54BCT245, SN74BCT245OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTS FUNCTION TABLEINPUTSOELLHDIRLHXOPERATIONB data to A busA data to B busIsolationlogic diagram (positive logic)DIR119OEA1218B1To Seven Other Channelsabsolute maximum ratings over operating free-air temperature range (unless otherwise noted)†Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 VInput voltage range, VI: Control inputs (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 VI/O ports (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 5.5 VVoltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . . . –0.5 V to 7 VVoltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCCCurrent into any output in the low state, IO:SN54BCT245 96 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mASN74BCT245 128 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mAPackage thermal impedance, θJA (see Note 2):DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/WDW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/WN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/WNS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/WPW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/WStorage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is notimplied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.NOTES:1.The input and output voltage ratings may be exceeded if the input and output current ratings are observed.2.The package thermal impedance is calculated in accordance with JESD 51-7.2POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002SN54BCT245, SN74BCT245OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTSrecommended operating conditions (see Note 3)SN54BCT245MINVCCVIHVILIIKIOHIOLSupply voltageHigh-level input voltageLow-level input voltageInput clamp currentHighleveloutputcurrentHigh-level output currentLowleveloutputcurrentLow-level output currentA portB portA portB port4.520.8–18–3–122048NOM5MAX5.5SN74BCT245MIN4.520.8–18–3–1524NOM5MAX5.5UNITVVVmAmAmATAOperating free-air temperature–55125070°CNOTE 3:All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,Implications of Slow or Floating CMOS Inputs, literature number SCBA004.electrical characteristics over recommended operating free-air temperature range (unlessotherwise noted)PARAMETERVIKAportA portVOHB portVCC = 4.5 VVCC = 4.5 V,VCC = 4.5 V=45VTESTCONDITIONSTEST CONDITIONSII = –18 mAIOH = –1 mAIOH = –3 mAIOH = –3 mAIOH = –12 mAIOH = –15 mAIOL = 20 mAIOL = 24 mAIOL = 48 mAIOL = mAVI = 5.5 V=55V=27VVI = 2.7 VVI = 0.5 V=05VVO = 0=0–60–100573610VI = 2.5 V or 0.5 VVO = 2.5 V or 0.5 V=25Vor05V7912SN54BCT245MINTYP†MAX–1.22.52.42.423.43.33.33.220.30.380.50.350.550.4210.17020–0.65–1.2–150–225905715–60–10057361079120.5510.17020–0.65–1.2–150–225905715mAµAmAmAmAmAmApFpF0.5V3.12.52.42.43.43.33.3VSN74BCT245MINTYP†MAX–1.2UNITVAportA portVOLBportB portIIIIH‡IIL‡IOS§ICCLICCHICCZCiCiioA or B portControl inputA or B portControl inputA or B portControl inputA portB portA to BA to BControl inputA to BB to AVCC = 4.5 V=45VVCC = 4.5 V=45VVCC = 5.5 V,=55V=55VVCC = 5.5 V,VCC = 5.5 V,=55VVCC = 5.5 V,=55VVCC = 5.5 VVCC = 5.5 VVCC = 5.5 VVCC = 5 V,VCC = 5 V,=5V†All typical values are at VCC = 5 V, TA = 25°C.‡For I/O ports, the parameters IIH and IIL include the off-state output current.§Not more than one output should be tested at a time, and the duration of the test should not exceed one second.POST OFFICE BOX 655303 DALLAS, TEXAS 75265•3元器件交易网www.cecb2b.com

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002SN54BCT245, SN74BCT245OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTS switching characteristics (see Figure 1)VCC = 5 V,CL = 50 pF,R1 = 500 Ω,R2 = 500 Ω,TA = 25°C′BCT245MINtPLHtPHLtPZHtPZLtPHZtPLZAorBA or BOEOEBorAB or AAorBA or BAorBA or B11.51.51.51.51.5TYP4.44.8885.85.1MAX66.69.410.28.37.8VCC = 4.5 V to 5.5 V,CL = 50 pF,R1 = 500 Ω,R2 = 500 Ω,TA = MIN to MAX†SN54BCT245MIN11.51.51.51.51.5MAX7.27.611.211..79.6SN74BCT245MIN11.51.51.51.51.5MAX7710.911.69.39.1nsnsnsPARAMETERFROM(INPUT)TO(OUTPUT)UNIT†For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.4POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002SN54BCT245, SN74BCT245OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTSPARAMETER MEASUREMENT INFORMATION7 V (tPZL, tPLZ, O.C.)Open(all others)S1From OutputUnder TestCL(see Note A)R1TestPointR1From OutputUnder TestCL(see Note A)R2RL = R1 = R2LOAD CIRCUIT FOR3-STATE AND OPEN-COLLECTOR OUTPUTSTestPointLOAD CIRCUIT FORTOTEM-POLE OUTPUTSTiming Input(see Note B)tsuData Input(see Note B)1.5 V3 V1.5 V0 Vth3 V1.5 V0 VVOLTAGE WAVEFORMSSETUP AND HOLD TIMESHigh-LevelPulse(see Note B)3 V1.5 Vtw3 V1.5 V0 VLow-LevelPulse1.5 V1.5 V0 VVOLTAGE WAVEFORMSPULSE DURATIONInput(see Note B)tPLHIn-PhaseOutput(see Note D)tPHLOut-of-PhaseOutput(see Note D)3 V1.5 V1.5 V0 VtPHLVOH1.5 V1.5 VVOLtPLHVOH1.5 V1.5 VVOLOutputControl(low-level enable)tPZLWaveform 1(see Notes C and D)tPZHWaveform 2(see Notes C and D)3 V1.5 V1.5 V0 VtPLZ1.5 VtPHZ3.5 VVOL0.3 VVOH1.5 V0.3 V0 VVOLTAGE WAVEFORMSPROPAGATION DELAY TIMES (see Note D)VOLTAGE WAVEFORMSENABLE AND DISABLE TIMES, 3-STATE OUTPUTSNOTES:A.CL includes probe and jig capacitance.B.All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, tr = tf≤ 2.5 ns, duty cycle = 50%.C.Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.Waveform2 is for an output with internal conditions such that the output is high except when disabled by the output control.D.The outputs are measured one at a time with one transition per measurement.E.When measuring propagation delay times of 3-state outputs, switch S1 is open.Figure 1. Load Circuit and Voltage WaveformsPOST OFFICE BOX 655303 DALLAS, TEXAS 75265•5元器件交易网www.cecb2b.com

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002SN54BCT245, SN74BCT245OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTS TYPICAL CHARACTERISTICS†Figures 2 through 5 show the typical power dissipation for an SN74BCT245 over variations in outputs switching,output frequency, and capacitive load. POWER DISSIPATIONvsFREQUENCY1050900750600450300150001020304050f – Frequency – MHzVCC = 5.5 VTA = 70°C RL = 500 Ω Air Flow = 0 CL = 15 pFEight SwitchingPD – Power Dissipation – mW12001000800600One Switching400200001020304050f – Frequency – MHz1400POWER DISSIPATIONvsFREQUENCYVCC = 5.5 VTA = 70°C RL = 500 Ω Air Flow = 0 CL = 50 pFPD – Power Dissipation – mWEight SwitchingFour SwitchingFour SwitchingOne SwitchingFigure 2POWER DISSIPATIONvsFREQUENCY1750VCC = 5.5 VTA = 70°C RL = 500 Ω Air Flow = 0 CL = 100 pFEight Switching1500PD – Power Dissipation – mW1250100075050025000102030f – Frequency – MHz4050010VCC = 5.5 VTA = 70°C RL = 500 Ω Air Flow = 0 CL = 150 pFFigure 3POWER DISSIPATIONvsFREQUENCYEight SwitchingFour Switching17501500PD – Power Dissipation – mW125010007505002500Four SwitchingOne SwitchingOne Switching203040f – Frequency – MHz50Figure 4†The dashed lines are for the DB package only.Figure 56POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com

PACKAGEOPTIONADDENDUM

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28-May-2007

PACKAGINGINFORMATION

OrderableDevice5962-9051401M2A5962-9051401MRA5962-9051401MSASN74BCT245DBLESN74BCT245DBRSN74BCT245DBRE4SN74BCT245DBRG4SN74BCT245DWSN74BCT245DWE4SN74BCT245DWG4SN74BCT245DWRSN74BCT245DWRE4SN74BCT245DWRG4SN74BCT245NSN74BCT245NE4SN74BCT245NSRSN74BCT245NSRE4SN74BCT245PWSN74BCT245PWE4SN74BCT245PWG4SN74BCT245PWRSN74BCT245PWRE4SN74BCT245PWRG4SNJ54BCT245FKSNJ54BCT245JSNJ54BCT245W

(1)

Status(1)ACTIVEACTIVEACTIVEOBSOLETEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVE

PackageTypeLCCCCDIPCFPSSOPSSOPSSOPSSOPSOICSOICSOICSOICSOICSOICPDIPPDIPSOSOTSSOPTSSOPTSSOPTSSOPTSSOPTSSOPLCCCCDIPCFP

PackageDrawingFKJWDBDBDBDBDWDWDWDWDWDWNNNSNSPWPWPWPWPWPWFKJW

PinsPackageEcoPlan(2)

Qty2020202020202020202020202020202020202020202020202020

111

TBDTBDTBDTBD

2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)252525

Green(RoHS&noSb/Br)Green(RoHS&noSb/Br)Green(RoHS&noSb/Br)

Lead/BallFinish

MSLPeakTemp(3)

POST-PLATEN/AforPkgTypeA42SNPBA42CallTICUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAU

N/AforPkgTypeN/AforPkgTypeCallTI

Level-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMN/AforPkgTypeN/AforPkgTypeLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIM

2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)2020

Pb-Free(RoHS)Pb-Free(RoHS)

2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)707070

Green(RoHS&noSb/Br)Green(RoHS&noSb/Br)Green(RoHS&noSb/Br)

2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)2000Green(RoHS&

noSb/Br)111

TBDTBDTBD

POST-PLATEN/AforPkgTypeA42SNPBA42

N/AforPkgTypeN/AforPkgType

Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.

LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.

Addendum-Page1

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PACKAGEOPTIONADDENDUM

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28-May-2007

NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.

PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable.OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.

(2)

EcoPlan-Theplannedeco-friendlyclassification:Pb-Free(RoHS),Pb-Free(RoHSExempt),orGreen(RoHS&noSb/Br)-pleasecheckhttp://www.ti.com/productcontentforthelatestavailabilityinformationandadditionalproductcontentdetails.TBD:ThePb-Free/Greenconversionplanhasnotbeendefined.

Pb-Free(RoHS):TI'sterms\"Lead-Free\"or\"Pb-Free\"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirementsforall6substances,includingtherequirementthatleadnotexceed0.1%byweightinhomogeneousmaterials.Wheredesignedtobesolderedathightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses.

Pb-Free(RoHSExempt):ThiscomponenthasaRoHSexemptionforeither1)lead-basedflip-chipsolderbumpsusedbetweenthedieandpackage,or2)lead-baseddieadhesiveusedbetweenthedieandleadframe.ThecomponentisotherwiseconsideredPb-Free(RoHScompatible)asdefinedabove.

Green(RoHS&noSb/Br):TIdefines\"Green\"tomeanPb-Free(RoHScompatible),andfreeofBromine(Br)andAntimony(Sb)basedflameretardants(BrorSbdonotexceed0.1%byweightinhomogeneousmaterial)

(3)

MSL,PeakTemp.--TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.

ImportantInformationandDisclaimer:TheinformationprovidedonthispagerepresentsTI'sknowledgeandbeliefasofthedatethatitisprovided.TIbasesitsknowledgeandbeliefoninformationprovidedbythirdparties,andmakesnorepresentationorwarrantyastotheaccuracyofsuchinformation.Effortsareunderwaytobetterintegrateinformationfromthirdparties.TIhastakenandcontinuestotakereasonablestepstoproviderepresentativeandaccurateinformationbutmaynothaveconducteddestructivetestingorchemicalanalysisonincomingmaterialsandchemicals.TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimitedinformationmaynotbeavailableforrelease.

InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTItoCustomeronanannualbasis.

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PACKAGEMATERIALSINFORMATION

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19-May-2007

TAPEANDREELINFORMATION

PackMaterials-Page1

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PACKAGEMATERIALSINFORMATION

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19-May-2007

DevicePackagePinsSite

ReelDiameter(mm)330330330330

ReelWidth(mm)16242416

A0(mm)B0(mm)K0(mm)

P1(mm)1212128

WPin1(mm)Quadrant16242416

Q1Q1Q1Q1

SN74BCT245DBRSN74BCT245DWRSN74BCT245NSRSN74BCT245PWR

DBDWNSPW

20202020

MLAMLAMLAMLA

8.210.88.26.95

7.513.013.07.1

2.52.72.51.6

TAPEANDREELBOXINFORMATION

DeviceSN74BCT245DBRSN74BCT245DWRSN74BCT245NSRSN74BCT245PWR

PackageDBDWNSPW

Pins20202020

SiteMLAMLAMLAMLA

Length(mm)

342.9333.2333.2342.9

Width(mm)336.6333.2333.2336.6

Height(mm)

28.5831.7531.7528.58

PackMaterials-Page2

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PACKAGEMATERIALSINFORMATION

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PackMaterials-Page3

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MECHANICAL DATA MLCC006B – OCTOBER 1996FK (S-CQCC-N**) 28 TERMINAL SHOWNLEADLESS CERAMIC CHIP CARRIER18171615141312NO. OFTERMINALS**1110287668584445220AMIN0.342(8,69)0.442(11,23)0.0(16,26)0.739(18,78)0.938(23,83)1.141(28,99)MAX0.358(9,09)0.458(11,63)0.660(16,76)0.761(19,32)0.962(24,43)1.165(29,59)MIN0.307(7,80)0.406(10,31)0.495(12,58)0.495(12,58)0.850(21,6)1.047(26,6)BMAX0.358(9,09)0.458(11,63)0.560(14,22)0.560(14,22)0.858(21,8)1.063(27,0)192021B SQ22A SQ23242526272812340.080 (2,03)0.0 (1,63)0.020 (0,51)0.010 (0,25)0.020 (0,51)0.010 (0,25)0.055 (1,40)0.045 (1,14)0.045 (1,14)0.035 (0,)0.028 (0,71)0.022 (0,54)0.050 (1,27)0.045 (1,14)0.035 (0,)4040140/D 10/96NOTES:A.B.C.D.E.All linear dimensions are in inches (millimeters).This drawing is subject to change without notice.This package can be hermetically sealed with a metal lid.The terminals are gold plated.Falls within JEDEC MS-004POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com

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MECHANICAL DATAMSSO002E – JANUARY 1995 – REVISED DECEMBER 2001DB (R-PDSO-G**) 28 PINS SHOWN0,65280,380,22150,15MPLASTIC SMALL-OUTLINE0,250,095,605,008,207,40Gage Plane1A140°–ā8°0,250,950,55Seating Plane2,00 MAX0,05 MIN0,10PINS **DIMA MAX146,50166,50207,50248,502810,503010,503812,90A MIN5,905,906,907,909,909,9012,304040065/E 12/01NOTES:A.B.C.D.All linear dimensions are in millimeters.This drawing is subject to change without notice.Body dimensions do not include mold flash or protrusion not to exceed 0,15.Falls within JEDEC MO-150POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com

MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 MECHANICAL DATA PW (R-PDSO-G**) 14 PINS SHOWNPLASTIC SMALL-OUTLINE PACKAGE0,651480,300,190,10M0,15 NOM4,504,306,606,20Gage Plane0,251A70°–8°0,750,50Seating Plane1,20 MAX0,150,050,10PINS **DIMA MAX83,10145,10165,10206,60247,902,80A MIN2,904,904,906,407,709,6040400/F 01/97NOTES:A.B.C.D.All linear dimensions are in millimeters.This drawing is subject to change without notice.Body dimensions do not include mold flash or protrusion not to exceed 0,15.Falls within JEDEC MO-153POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com

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