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74HC/HCT147

Selection guide

Datasheet

74HC/HCT147
(Product Specification)
01-Dec-90, 7 pages, 44 kB

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74HC/HCT147 - 10-to-4 line priority encoder

General description
Features
Products/packages
Quality/reliability/chemical content
Pricing/ordering/availability
Samples
Discontinued information
Applications
Block diagrams/pinning
Design support
Parametrics/similar products
Print/email
Disclaimers
All information hereunder is subject to the subsequent disclaimers

General description

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 (A0 to A8) and provide a binary representation on the four active LOW outputs (Y0 to Y3). 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.

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Features

  • 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

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Products/packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
74HC147D74HC147D,6529337 145 00652Volume productionSOT109Bulk Pack, CECCStandard Marking
74HC147D74HC147D,6539337 145 00653Volume productionSOT109Reel 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 productionSOT109Bulk Pack, CECCStandard Marking
74HCT147D74HCT147D,6539337 149 80653Volume productionSOT109Reel Pack, SMD, 13", CECCStandard Marking
74HCT147N74HCT147N,6529336 699 40652Volume productionSOT38-4
(DIP16) 		Bulk Pack, CECCStandard Marking

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Quality/reliability/chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
74HC147D74HC147D,65274HC147D
week 6, 2004 6,621,51E+081
74HC147D74HC147D,65374HC147D
week 6, 2004 6,621,51E+081
74HC147DB74HC147DB,11274HC147DB
week 12, 2005 6,621,51E+081
74HC147DB74HC147DB,11874HC147DB
week 12, 2005 6,621,51E+081
74HC147N74HC147N,65274HC147N
Always Pb-free 6,621,51E+08NA
74HCT147D74HCT147D,65274HCT147D
week 6, 2004 6,621,51E+081
74HCT147D74HCT147D,65374HCT147D
week 6, 2004 6,621,51E+081
74HCT147N74HCT147N,65274HCT147N
Always Pb-free 6,621,51E+08NA

Quality and reliability disclaimer

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Pricing/ordering/availability

Type numberOrdering code(12NC)Orderable part numberIndicative price/unit($)RegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
74HC147D9337 145 00652  74HC147D,652  0.3400NAAVNET ELECTRONICS MARKETING2,896 11/19/2009Buy onlinenot available
74HC147D9337 145 00653  74HC147D,653  0.3400NAAVNET ELECTRONICS MARKETING1,448 11/19/2009Buy onlineOrder samples
    NADIGI-KEY CORPORATION4,100 11/20/2009Buy online 
    NAMOUSER ELECTRONICS181 11/20/2009Buy online 
    NAFUTURE ELECTRONICS2,500 11/19/2009Buy online 
    NAMOUSER ELECTRONICS181 11/20/2009Buy online 
74HC147DB9351 896 70112  74HC147DB,112  0.3400NADIGI-KEY CORPORATION324 11/20/2009Buy onlinenot available
74HC147DB9351 896 70118  74HC147DB,118  0.3400      not available
74HC147N9336 693 10652  74HC147N,652  0.3900NAARROW ELECTRONICS875 11/19/2009Buy onlinenot available
    NAMOUSER ELECTRONICS1,127 11/20/2009Buy online 
    NAFUTURE ELECTRONICS518 11/19/2009Buy online 
    NAAVNET ELECTRONICS MARKETING710 11/19/2009Buy online 
    NAMOUSER ELECTRONICS1,127 11/20/2009Buy online 
74HCT147D9337 149 80652  74HCT147D,652  0.3700NADIGI-KEY CORPORATION757 11/20/2009Buy onlinenot available
74HCT147D9337 149 80653  74HCT147D,653  0.3700NAMOUSER ELECTRONICS2,374 11/20/2009Buy onlinenot available
    NAMOUSER ELECTRONICS2,374 11/20/2009Buy online 
74HCT147N9336 699 40652  74HCT147N,652  0.3900NAMOUSER ELECTRONICS1,970 11/20/2009Buy onlineOrder samples
    NAMOUSER ELECTRONICS1,970 11/20/2009Buy online 
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Applications

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

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Design support

Support Documents

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Parametrics/similar products

Type numberPackageDescriptionPropagation Delay(ns)VoltagePower Dissipation ConsiderationsLogic Switching LevelsOutput Drive Capability
74HC147DSOT109
10-to-4 Line Priority Encoder15@5V2.0-6.0 VLow Power or Battery ApplicationsCMOS+/- 5.2 mA
74HC147DBSOT338-1
(SSOP16)		10-to-4 Line Priority Encoder15@5V2.0-6.0 VLow Power or Battery ApplicationsCMOS+/- 5.2 mA
74HC147NSOT38-4
(DIP16)		10-to-4 Line Priority Encoder15@5V2.0-6.0 VLow Power or Battery ApplicationsCMOS+/- 5.2 mA
74HCT147DSOT109
10-to-4 Line Priority Encoder; TTL Enabled174.5-5.5VLow PowerTTL+/- 4 mA
74HCT147NSOT38-4
(DIP16)		Dual 2-to-4 Line Decoder/Demultiplexer; TTL Enabled134.5-5.5VLow PowerTTL+/- 4 mA


Similar products
74HC/HCT147 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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