74HC(T)147

10-to-4 line priority encoder


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The 74HC/HCT147 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The 74HC/HCT147 9-input priority encoders accept data from nine active LOW inputs (A 0 to A 8) and provide a binary representation on the four active LOW outputs (Y 0 to Y 3). A priority is assigned to each input so that when two or more inputs are simultaneously active, the input with the highest priority is represented on the output, with input line A8 having the highest priority.

The devices provide the 10-line to 4-line priority encoding function by use of the implied decimal 'zero'. The 'zero' is encoded when all nine data inputs are HIGH, forcing all four outputs HIGH.

Features and benefits

  • Encodes 10-line decimal to 4-line BCD
  • Useful for 10-position switch encoding
  • Used in code converters and generators
  • Output capability: standard
  • ICC category: MSI

Applications

  • Driving LED displays
  • Driving incandescent displays
  • Driving fluorescent displays
  • Driving LCD displays
  • Driving gas discharge displays

Parametrics of this product

Type numberPackageNr of pinsPackage nameProduct statustpd(ns)VCC(V)FamilyNr of bitsPower dissipation considerationsLogic switching levelsOutput drive capability(mA)DescriptionTamb(Cel)
74HC147DSOT109-1
(SO16)		16SO16Production152.0 - 6.0HC(T)10lowCMOS+/- 5.210-to-4 line priority encoder-40~125
74HC147DBSOT338-1
(SSOP16)		16SSOP16Production152.0 - 6.0HC(T)10lowCMOS+/- 5.210-to-4 line priority encoder-40~125
74HC147NSOT38-4
(DIP16)		16DIP16Production152.0 - 6.0HC(T)10lowCMOS+/- 5.210-to-4 line priority encoder-40~125
74HCT147DSOT109-1
(SO16)		16SO16Production174.5 - 5.5HC(T)10lowTTL+/- 410-to-4 line priority encoder; TTL enabled-40~125
74HCT147NSOT38-4
(DIP16)		16DIP16Production134.5 - 5.5HC(T)10lowTTL+/- 410-to-4 line priority encoder; TTL enabled-40~125

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
74HC147D74HC147D,6529337 145 00652Volume productionSOT109-1
(SO16) 		Bulk Pack, CECCStandard Marking
74HC147D74HC147D,6539337 145 00653Volume productionSOT109-1
(SO16) 		Reel Pack, SMD, 13", CECCStandard Marking
74HC147DB74HC147DB,1129351 896 70112Volume productionSOT338-1
(SSOP16) 		TubeStandard Marking
74HC147DB74HC147DB,1189351 896 70118Volume productionSOT338-1
(SSOP16) 		Reel Pack, SMD, 13"Standard Marking
74HC147N74HC147N,6529336 693 10652Volume productionSOT38-4
(DIP16) 		Bulk Pack, CECCStandard Marking
74HCT147D74HCT147D,6529337 149 80652Volume productionSOT109-1
(SO16) 		Bulk Pack, CECCStandard Marking
74HCT147D74HCT147D,6539337 149 80653Volume productionSOT109-1
(SO16) 		Reel Pack, SMD, 13", CECCStandard Marking
74HCT147N74HCT147N,6529336 699 40652Volume productionSOT38-4
(DIP16) 		Bulk Pack, CECCStandard Marking

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT338-1SSOP16plastic shrink small outline package; 16 leads; body width 5.3 mmMO-150 (JEDEC); 2003-02-19
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
74HC147D74HC147D,65274HC147Dweek 6, 20046.621.5105740181268883E811
74HC147D74HC147D,65374HC147Dweek 6, 20046.621.5105740181268883E811
74HC147DB74HC147DB,11274HC147DBweek 12, 20056.621.5105740181268883E811
74HC147DB74HC147DB,11874HC147DBweek 12, 20056.621.5105740181268883E811
74HC147N74HC147N,65274HC147NAlways Pb-free6.621.5105740181268883E8NANA
74HCT147D74HCT147D,65274HCT147Dweek 6, 20046.621.5105740181268883E811
74HCT147D74HCT147D,65374HCT147Dweek 6, 20046.621.5105740181268883E811
74HCT147N74HCT147N,65274HCT147NAlways Pb-free6.621.5105740181268883E8NANA
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Documentation for this product

File nameTitleTypeFormatDate
74HC_HCT147_CNV10-to-4 line priority encoderData sheetpdf1990-12-01
AN11044Pin FMEA 74HC/74HCT familyApplication notepdf2011-03-16
HCT_USER_GUIDEHC/T User GuideUser manualpdf1997-11-01

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
74HCT147N9336 699 4065274HCT147N,652NAMOUSER ELECTRONICS6705/21/2013Buy online 
   NADIGI-KEY CORPORATION6625/21/2013Buy online 
   JAPANCHIP ONE STOP5005/21/2013Buy online 
74HC147D9337 145 0065274HC147D,652EUAVNET EXPRESS EUROPE4,7505/21/2013Buy onlineNot available
   EUARROW EUROPE4,5505/21/2013Buy online 
   JAPANCHIP ONE STOP4005/21/2013Buy online 
74HC147D9337 145 0065374HC147D,653NADIGI-KEY CORPORATION12,8665/21/2013Buy online 
   ASIAWPI5,000250005/21/2013Buy online 
   NAFUTURE ELECTRONICS2,5005/20/2013Buy online 
   EUFUTURE ELECTRONICS UK2,5005/20/2013Buy online 
   ASIAFUTURE ELECTRONICS- ASIA2,5005/20/2013Buy online 
   EUAVNET EXPRESS EUROPE2,5005/21/2013Buy online 
   NAMOUSER ELECTRONICS6455/21/2013Buy online 
74HC147DB9351 896 7011274HC147DB,112      Not available
74HC147DB9351 896 7011874HC147DB,118      Not available
74HCT147D9337 149 8065274HCT147D,652EUAVNET EXPRESS EUROPE6005/21/2013Buy online 
   NAMOUSER ELECTRONICS4145/21/2013Buy online 
   JAPANCHIP ONE STOP10005/21/2013Buy online 
74HCT147D9337 149 8065374HCT147D,653NAMOUSER ELECTRONICS1645/21/2013Buy onlineNot available
74HC147N9336 693 1065274HC147N,652NAAVNET EXPRESS AMERICAS6,2455/21/2013Buy onlineNot available
   EUAVNET EXPRESS EUROPE3,6755/21/2013Buy online 
   EUARROW EUROPE1,5255/21/2013Buy online 
   NAMOUSER ELECTRONICS1,2455/21/2013Buy online 
   NADIGI-KEY CORPORATION5675/21/2013Buy online 
   JAPANCHIP ONE STOP6505/21/2013Buy online 

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