74HC(T)157: 四路2输入多路复用器
74HC157；74HCT157是高速硅栅CMOS器件，与低功耗肖特基TTL针脚兼容。其规格符合JEDEC标准no. 7A。
74HC/HCT157是四路2输入多路复用器，其在一般数据选择输入的控制下从两个数据源选择4位数据。使能输入(E)为低电平有效。E为高电平时，无论所有其他输入条件如何，所有输出（1Y至4Y）都被强制为低电平。
将数据从两组寄存器移动到四个通用输出总线是74HC/HCT157的常见用途。一般数据选择输入(S)的状态可确定数据来自哪个特定的寄存器。其还可以用作函数生成器。该器件在实施极不规则的逻辑时非常有用，方法是生成两个变量（其中一个变量为通用变量）的16个不同函数中的任意四个，74HC/HCT157是4极2位置开关的逻辑实施，其中开关位置由施加到S的逻辑电平确定。
逻辑方程式为：
1Y = E × (1I1 × S + 1I0 × S)
2Y = E × (2I1 × S + 2I0 × S)
3Y = E × (3I1 × S + 3I0 × S)
4Y = E × (4I1 × S + 4I0 × S)
74HC/HCT157等同于74HC158，但具有非反相（真正）输出。
74HC_T_157: 产品结构框图
sot109-1_3d
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| Quad 2-input multiplexer (REV 8.0) PDF (195.0 kB) 74HC_HCT157 [English] | 28 Dec 2015 |
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 |
IBIS
- 74HC157 IBIS model (REV 1.0) ibs HC157 11/3/2015
- 74HCT157 IBIS model (REV 1.0) ibs HCT157 11/3/2015
订购信息
| 型号 | 状态 |
|---|---|
| 74HC157D | Active |
| 74HCT157PW | Active |
| 74HCT157BQ | Active |
| 74HCT157D | Active |
| 74HC157DB | Active |
| 74HC157BQ | Active |
| 74HC157PW | Active |
| 74HCT157DB | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT157BQ |  | SOT763-1 | Reel 7" Q1/T1 | Active | 74HCT157BQ,115 (9352 944 24115) | HCT157 | 74HCT157BQ |    | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HCT157PW |  | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT157PW,118 (9351 885 40118) | HCT157 | 74HCT157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT157PW,112 (9351 885 40112) | HCT157 | 74HCT157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT157DB |  | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT157DB,118 (9351 885 60118) | HCT157 | 74HCT157DB |  | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT157DB,112 (9351 885 60112) | HCT157 | 74HCT157DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT157D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HCT157D,653 (9337 137 50653) | 74HCT157D | 74HCT157D | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HCT157D,652 (9337 137 50652) | 74HCT157D | 74HCT157D | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC157BQ | | SOT763-1 | Reel 7" Q1/T1 | Active | 74HC157BQ,115 (9352 944 23115) | HC157 | 74HC157BQ | | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HC157PW | | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC157PW,118 (9351 868 80118) | HC157 | 74HC157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC157PW,112 (9351 868 80112) | HC157 | 74HC157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC157DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC157DB,118 (9351 868 70118) | HC157 | 74HC157DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC157DB,112 (9351 868 70112) | HC157 | 74HC157DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC157D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HC157D,653 (9337 137 40653) | 74HC157D | 74HC157D | | week 35, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HC157D,652 (9337 137 40652) | 74HC157D | 74HC157D | | week 35, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
- Quad 2-input multiplexer 74HCT157PW
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- HC/T User Guide 74HCU04PW
- ロジック製品セレクションガイド... 74LVC_H_245A_Q100
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- 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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- plastic shrink small outline package; 16 leads; body width 5.3 mm 74HC_T_595_Q100
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- plastic small outline package; 16 leads; body width 3.9 mm NPIC6C596A_Q100
- Footprint for reflow soldering NPIC6C596A_Q100
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