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DM74LS138J PDF预览

DM74LS138J

更新时间： 2024-09-20 22:34:35
品牌 Logo 应用领域
美国国家半导体 - NSC 解码器驱动器解复用器逻辑集成电路
页数 文件大小 规格书
8页 167K
描述
Decoders/Demultiplexers

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中文翻译

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DM74LS138J 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
Reach Compliance Code：compliant风险等级：5.91
Is Samacsys：NJESD-30 代码：R-XDIP-T16
JESD-609代码：e0逻辑集成电路类型：OTHER DECODER/DRIVER
最大I（ol）：0.008 A功能数量：1
端子数量：16最高工作温度：70 °C
最低工作温度：封装主体材料：CERAMIC
封装代码：DIP封装等效代码：DIP16,.3
封装形状：RECTANGULAR封装形式：IN-LINE
电源：5 V最大电源电流（ICC）：10 mA
Prop。Delay @ Nom-Sup：41 ns认证状态：Not Qualified
子类别：Decoder/Drivers标称供电电压 (Vsup)：5 V
表面贴装：NO技术：TTL
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUALBase Number Matches：1

DM74LS138J 数据手册

 浏览型号DM74LS138J的Datasheet PDF文件第2页浏览型号DM74LS138J的Datasheet PDF文件第3页浏览型号DM74LS138J的Datasheet PDF文件第4页浏览型号DM74LS138J的Datasheet PDF文件第5页浏览型号DM74LS138J的Datasheet PDF文件第6页浏览型号DM74LS138J的Datasheet PDF文件第7页 
June 1989  
54LS138/DM54LS138/DM74LS138,  
54LS139/DM54LS139/DM74LS139  
Decoders/Demultiplexers  
General Description  
These Schottky-clamped circuits are designed to be used in  
high-performance memory-decoding or data-routing appli-  
cations, requiring very short propagation delay times. In  
high-performance memory systems these decoders can be  
used to minimize the effects of system decoding. When  
used with high-speed memories, the delay times of these  
decoders are usually less than the typical access time of the  
memory. This means that the effective system delay intro-  
duced by the decoder is negligible.  
Schottky diodes to suppress line-ringing and simplify system  
design.  
Features  
Y
Designed specifically for high speed:  
Memory decoders  
Data transmission systems  
Y
LS138 3-to-8-line decoders incorporates 3 enable in-  
puts to simplify cascading and/or data reception  
The LS138 decodes one-of-eight lines, based upon the con-  
ditions at the three binary select inputs and the three enable  
inputs. Two active-low and one active-high enable inputs  
reduce the need for external gates or inverters when ex-  
panding. A 24-line decoder can be implemented with no ex-  
ternal inverters, and a 32-line decoder requires only one  
inverter. An enable input can be used as a data input for  
demultiplexing applications.  
Y
LS139 contains two fully independent 2-to-4-line decod-  
ers/demultiplexers  
Y
Schottky clamped for high performance  
Y
Typical propagation delay (3 levels of logic)  
LS138 21 ns  
LS139 21 ns  
Y
Typical power dissipation  
LS138 32 mW  
LS139 34 mW  
The LS139 comprises two separate two-line-to-four-line de-  
coders in a single package. The active-low enable input can  
be used as a data line in demultiplexing applications.  
Y
Alternate  
Military/Aerospace  
devices  
(54LS138,  
54LS139) are available. Contact a National Semicon-  
ductor Sales Office/Distributor for specifications.  
All of these decoders/demultiplexers feature fully buffered  
inputs, presenting only one normalized load to its driving  
circuit. All inputs are clamped with high-performance  
Connection Diagrams  
Dual-in-Line Package  
Dual-in-Line Package  
TL/F/6391–1  
Order Number 54LS138DMQB, 54LS138FMQB,  
54LS138LMQB, DM54LS138J, DM54LS138W,  
DM74LS138M or DM74LS138N  
TL/F/6391–2  
Order Number 54LS139DMQB, 54LS139FMQB,  
54LS139LMQB, DM54LS139J, DM54LS139W,  
DM74LS139M or DM74LS139N  
See NS Package Number E20A, J16A,  
M16A, N16E or W16A  
See NS Package Number E20A, J16A,  
M16A, N16E or W16A  
C
1995 National Semiconductor Corporation  
TL/F/6391  
RRD-B30M105/Printed in U. S. A.  
12345678

中文翻译

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与DM74LS138J相关器件

型号 品牌 获取价格 描述 数据表
DM74LS138J/A+ TI

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 		IC,DECODER/DEMUX,3-TO-8-LINE,LS-TTL,DIP,16PIN,CERAMIC
DM74LS138M FAIRCHILD

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 		Decoder/Demultiplexer
DM74LS138M NSC

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 		Decoders/Demultiplexers
DM74LS138MX FAIRCHILD

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 		3-To-8-Line Demultiplexer
DM74LS138N FAIRCHILD

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 		Decoder/Demultiplexer
DM74LS138N NSC

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 		Decoders/Demultiplexers
DM74LS138N/A+ TI

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 		IC,DECODER/DEMUX,3-TO-8-LINE,LS-TTL,DIP,16PIN,PLASTIC
DM74LS138N/B+ TI

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 		IC,DECODER/DEMUX,3-TO-8-LINE,LS-TTL,DIP,16PIN,PLASTIC
DM74LS138SJ FAIRCHILD

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 		Decoder/Demultiplexer
DM74LS138SJX FAIRCHILD

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 		3-To-8-Line Demultiplexer

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