74HC(T)238: 3至8线路解码器/解复用器

74HC238和74HCT238是高速硅栅CMOS器件，与低功耗肖特基TTL (LSTTL)针脚兼容。

74HC238/74HCT238解码器接受三个二进制加权地址输入（A0、A1和A2），处于使能状态时提供8个互斥高电平有效输出（Y0至Y7）。74HC238/74HCT238具有三个使能输入：两个低电平有效（E1和E2）输入和一个高电平有效(E3)输入。除非E1和E2为低电平且E3为高电平，否则每个输出都将是低电平。该多路使能功能只需凭借四个"238" IC和一个反相器， 即能将"238"轻松并行扩展为32选1（5线路至32线路）解码器。通过将某个低电平有效使能输入用作数据输入以及将剩下的使能输入用作选通，"238"可用作一个八输出解复用器。未使用的使能输入必须恒定地连接到其相应的高电平或低电平有效状态。

74HC238/74HCT238类似于74HC138/74HCT138，但具有非反相输出。

74HC_T_238: 产品结构框图
sot109-1_3d
数据手册 (1)
名称/描述Modified Date
3-to-8 line decoder/demultiplexer (REV 4.0) PDF (176.0 kB) 74HC_HCT238 [English]28 Jan 2016
应用说明 (2)
名称/描述Modified 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
用户指南 (1)
名称/描述Modified Date
HC/T User Guide (REV 1.0) PDF (508.0 kB) HCT_USER_GUIDE [English]01 Nov 1997
选型工具指南 (2)
名称/描述Modified 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
封装信息 (4)
名称/描述Modified 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
包装 (2)
名称/描述Modified 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
支持信息 (4)
名称/描述Modified 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
订购信息
型号状态
74HCT238BQActive
74HCT238DBActive
74HC238DBActive
74HC238BQActive
74HCT238PWActive
74HC238DActive
74HCT238DActive
74HC238PWActive
封装环保信息
产品编号封装说明Outline Version回流/波峰焊接包装产品状态部件编号订购码 (12NC)Marking化学成分RoHS / 无铅 / RHF无铅转换日期EFRIFR(FIT)MTBF（小时）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
74HC_T_238
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