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 |
|---|---|
| 74HCT238BQ | Active |
| 74HCT238DB | Active |
| 74HC238DB | Active |
| 74HC238BQ | Active |
| 74HCT238PW | Active |
| 74HC238D | Active |
| 74HCT238D | Active |
| 74HC238PW | Active |
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 | EFR | IFR(FIT) | MTBF（小时） | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC238DB |  | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC238DB,118 (9351 892 70118) | HC238 | 74HC238DB |    | week 13, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC238DB,112 (9351 892 70112) | HC238 | 74HC238DB | | week 13, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC238PW |  | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC238PW,118 (9351 890 00118) | HC238 | 74HC238PW |  | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC238PW,112 (9351 890 00112) | HC238 | 74HC238PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC238D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HC238D,653 (9337 146 40653) | 74HC238D | 74HC238D | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HC238D,652 (9337 146 40652) | 74HC238D | 74HC238D | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT238D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HCT238D,653 (9337 151 20653) | 74HCT238D | 74HCT238D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HCT238D,652 (9337 151 20652) | 74HCT238D | 74HCT238D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT238DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT238DB,118 (9351 892 60118) | HCT238 | 74HCT238DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT238DB,112 (9351 892 60112) | HCT238 | 74HCT238DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC238BQ |  | SOT763-1 | Reel 7" Q1/T1 | Active | 74HC238BQ,115 (9352 836 81115) | HC238 | 74HC238BQ | | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HCT238BQ | | SOT763-1 | Reel 7" Q1/T1 | Active | 74HCT238BQ,115 (9352 836 82115) | HCT238 | 74HCT238BQ | | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HCT238PW | | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT238PW,118 (9351 895 60118) | HCT238 | 74HCT238PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT238PW,112 (9351 895 60112) | HCT238 | 74HCT238PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
- 3-to-8 line decoder/demultiplexer 74HCT238PW
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- 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
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