74F253

Dual 4-bit input multiplexer (3-State)


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The 74F253 has two identical 4-input multiplexers with 3-State outputs which select two bits from four sources selected by common Select inputs (S0, S1). When the individual Output Enable (OEa, OEb) inputs of the 4-input multiplexers are High, the outputs are forced to a high impedance (Hi-Z) state.

The 74F253 is the logic implementation of a 2-pole, 4-position switch; the position of the switch being determined by the logic levels supplied to the two common Select inputs.

To avoid exceeding the maximum current ratings when the outputs of the 3-State devices are tied together, all but one device must be in the high-impedance state. Therefore, only one Output Enable must be active at a time.

Features and benefits

  • 3-State outputs for bus interface and multiplex expansion
  • Common select inputs
  • Separate Output Enable Inputs

Show functional diagram

Block diagram: N74F253D, N74F253N
Block diagram: N74F253D, N74F253N

Parametrics of this product

Type numberPackageNr of pinsPackage nameProduct statustpd(ns)VCC(V)FamilyPower dissipation considerationsLogic switching levelsOutput drive capability(mA)DescriptionTamb(Cel)
N74F253DSOT109-1
(SO16)		16SO16Production54.5 - 5.5FASThighTTL-3/+24dual 4-input multiplexer (3-State)0~70
N74F253NSOT38-4
(DIP16)		16DIP16Production54.5 - 5.5FASThighTTL-3/+24dual 4-input multiplexer (3-State)0~70

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
N74F253DN74F253D,6029337 567 30602Volume productionSOT109-1
(SO16) 		Tube (Signetics)Standard Marking
N74F253DN74F253D,6239337 567 30623Volume productionSOT109-1
(SO16) 		Reel Pack, SMD, 13" (Signetics)Standard Marking
N74F253NN74F253N,6029337 567 20602Volume productionSOT38-4
(DIP16) 		Tube (Signetics)Standard Marking

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT109-1SO16plastic small outline package; 16 leads; body width 3.9 mmMS-012 (JEDEC); 076E07 (IEC); 2003-02-19
SOT38-4DIP16plastic dual in-line package; 16 leads (300 mil)2003-02-13

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
N74F253DN74F253D,602N74F253Dweek 6, 20045.631.7761989342806396E811
N74F253DN74F253D,623N74F253Dweek 6, 20045.631.7761989342806396E811
N74F253NN74F253N,602N74F253NAlways Pb-free5.631.7761989342806396E8NANA
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Documentation for this product

File nameTitleTypeFormatDate
74F253Dual 4-bit input multiplexer (3-State)Data sheetpdf1988-11-29
AN2021Thermal considerations for FAST logic productsApplication notepdf1995-03-13
AN202Testing and specifying FAST logicApplication notepdf1987-06-01
AN203Test Fixtures for High Speed LogicApplication notepdf1998-04-02

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
N74F253N9337 567 20602N74F253N,602      Not available
N74F253D9337 567 30602N74F253D,602EUAVNET EXPRESS EUROPE2,9005/23/2013Buy onlineNot available
N74F253D9337 567 30623N74F253D,623NADIGI-KEY CORPORATION1355/23/2013Buy online 
   JAPANCHIP ONE STOP10005/23/2013Buy online 

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