74HC(T)238: 3-to-8 line decoder/demultiplexer

The 74HC238; 74HCT238 decodes three binary weighted address inputs (A0, A1 and A2) to eight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1 and E2 and E3). Every output will be LOW unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion to a 1-of-32 (5 to 32 lines) decoder with just four '238 ICs and one inverter. The '238 can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

74HC_T_238: Product Block Diagram
Outline 3d SOT338-1
Data Sheets (1)
Name/DescriptionModified Date
3-to-8 line decoder/demultiplexer (REV 4.0) PDF (176.0 kB) 74HC_HCT238 [English]28 Jan 2016
Application Notes (2)
Name/DescriptionModified Date
Live Insertion Aspects of Philips Logic Families (REV 1.0) PDF (73.0 kB) AN252 [English]13 Mar 2013
Pin FMEA 74HC/74HCT family (REV 1.0) PDF (51.0 kB) AN11044 [English]16 Mar 2011
Users Guides (1)
Name/DescriptionModified Date
HC/T User Guide (REV 1.0) PDF (508.0 kB) HCT_USER_GUIDE [English]01 Nov 1997
Selector Guides (2)
Name/DescriptionModified Date
ロジック製品セレクションガイド... (REV 1.0) PDF (38.3 MB) LOGIC_SELECTION_GUIDE_2015_JP [English]19 Nov 2015
Logic selection guide 2016 (REV 1.1) PDF (15.3 MB) 75017285 [English]08 Jan 2015
Package Information (4)
Name/DescriptionModified Date
plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x... (REV 1.1) PDF (191.0 kB) SOT763-1 [English]30 May 2016
plastic small outline package; 16 leads; body width 3.9 mm (REV 1.0) PDF (192.0 kB) SOT109-1 [English]08 Feb 2016
plastic shrink small outline package; 16 leads; body width 5.3 mm (REV 1.0) PDF (306.0 kB) SOT338-1 [English]08 Feb 2016
plastic thin shrink small outline package; 16 leads; body width 4.4 mm (REV 1.0) PDF (300.0 kB) SOT403-1 [English]08 Feb 2016
Packing (2)
Name/DescriptionModified Date
DHVQFN16; Reel pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or... (REV 2.0) PDF (191.0 kB) SOT763-1_115 [English]05 Jul 2016
TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (218.0 kB) SOT403-1_118 [English]08 Apr 2013
Supporting Information (4)
Name/DescriptionModified Date
Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English]08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English]08 Oct 2009
Footprint for reflow soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-REFLOW [English]08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]08 Oct 2009
Ordering Information
ProductStatus
74HCT238BQActive
74HCT238DBActive
74HC238DBActive
74HC238BQActive
74HCT238PWActive
74HC238DActive
74HCT238DActive
74HC238PWActive
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateEFRIFR(FIT)MTBF(hour)MSLMSL LF
74HC238DBSOT338-1SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE
SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE		Reel 13" Q1/T1Active74HC238DB,118 (9351 892 70118)HC23874HC238DBweek 13, 200584.96.621.51E811
Bulk PackActive74HC238DB,112 (9351 892 70112)HC23874HC238DBweek 13, 200584.96.621.51E811
74HC238PWSOT403-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1Active74HC238PW,118 (9351 890 00118)HC23874HC238PWweek 10, 200584.96.621.51E811
Bulk PackActive74HC238PW,112 (9351 890 00112)HC23874HC238PWweek 10, 200584.96.621.51E811
74HC238DSOT109-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE		Reel 13" Q1/T1 CECCActive74HC238D,653 (9337 146 40653)74HC238D74HC238Dweek 12, 200584.96.621.51E811
Bulk Pack, CECCActive74HC238D,652 (9337 146 40652)74HC238D74HC238Dweek 12, 200584.96.621.51E811
74HCT238DSOT109-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE		Reel 13" Q1/T1 CECCActive74HCT238D,653 (9337 151 20653)74HCT238D74HCT238Dweek 6, 200484.96.621.51E811
Bulk Pack, CECCActive74HCT238D,652 (9337 151 20652)74HCT238D74HCT238Dweek 6, 200484.96.621.51E811
74HCT238DBSOT338-1SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE
SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE		Reel 13" Q1/T1Active74HCT238DB,118 (9351 892 60118)HCT23874HCT238DBweek 12, 200584.96.621.51E811
Bulk PackActive74HCT238DB,112 (9351 892 60112)HCT23874HCT238DBweek 12, 200584.96.621.51E811
74HC238BQSOT763-1Reel 7" Q1/T1Active74HC238BQ,115 (9352 836 81115)HC23874HC238BQAlways Pb-free84.96.621.51E811
74HCT238BQSOT763-1Reel 7" Q1/T1Active74HCT238BQ,115 (9352 836 82115)HCT23874HCT238BQAlways Pb-free84.96.621.51E811
74HCT238PWSOT403-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1Active74HCT238PW,118 (9351 895 60118)HCT23874HCT238PWweek 10, 200584.96.621.51E811
Bulk PackActive74HCT238PW,112 (9351 895 60112)HCT23874HCT238PWweek 10, 200584.96.621.51E811
3-to-8 line decoder/demultiplexer 74HCT238PW
Live Insertion Aspects of Philips Logic Families 74HC_T_245_Q100
Pin FMEA 74HC/74HCT family 74HC_T_597_Q100
HC/T User Guide 74HCU04PW
ロジック製品セレクションガイド... 74LVC_H_245A_Q100
Logic selection guide 2016 74LVC_H_245A_Q100
plastic small outline package; 16 leads; body width 3.9 mm NPIC6C596A_Q100
Footprint for reflow soldering NPIC6C596A_Q100
Footprint for wave soldering NPIC6C596A_Q100
plastic shrink small outline package; 16 leads; body width 5.3 mm 74HC_T_595_Q100
Footprint for reflow soldering 74HC_T_595_Q100
plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x... NPIC6C596A_Q100
DHVQFN16; Reel pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or... NPIC6C596A_Q100
SOT403-1 LPC812M101JDH16
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
Reel 13" Q1/T1 LPC812M101JDH16
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