SN74LS139N中文资料

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74LS139中文资料

0.25
0.4
II
最大输入电压时输入电流
VCC = Max, VI = 7V
-
-
0.1
mA
IIH
输入高电平电流
VCC = Max, VI = 2.7V
-
-
20
μA
IIL
输入低电平电流
VCC = Max, VI = 0.4V
-
-
-0.36
mA
IOS
输出短路电流
VCC = Max (Note 4)
-20
-
-100
mA
ICC
电源电流
VCC = Max (Note 5)
-
6号
参数
Fro (Input)
To (Output)
RL = 2 kW
单位
CL = 15 pF
CL = 50 pF
Min
Max
Min
Max
tPLH
低到高输出传递延迟时间
Select to Output
-
18
-
27
74LS139中文资料(功能,引脚,真值表及电气参数)
74LS139功能:
54/74LS139为2线－4线译码器,也可作数据分配器。
其主要电特性的典型值如下：
型号54LS139/74LS139
传递延迟时间22ns功耗34mW
当选通端（G1）为高电平，可将地址端（A、B）的二进制编码在一个对应的输出端以低电平译出。
ns
tPHL
高到低输出传递延迟时间
Select to Output
-
27
-
40
ns
tPLH
低到高输出传递延迟时间

SN74LS83N中文资料

IIH
20 40 0.1 0.2 – 0.4 – 0.8 –100 39 34 34
VCC = MAX, VIN = 2.7 V
mA
VCC = MAX, VIN = 7.0 V
mA mA
VCC = MAX, VIN = 0.4 V VCC = MAX
mA
VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
ORDERING INFORMATION
SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC
LOGIC DIAGRAM
C0 A1
13 10
B1
11
A2
8
B2
7
A3
3
B3
4
A4
1
B4
16
VCC = PIN 5 GND = PIN 12 = PIN NUMBERS
LOW POWER SCHOTTKY
J SUFFIX CERAMIC CASE 620-09
16 1
1 A4
2 Σ3
3 A3
4 B3
5 VCC
6 Σ2
7 B2
8 A2 LOADING (Note a) HIGH LOW 0.5 U.L. 0.5 U.L. 0.25 U.L. 5 (2.5) U.L. 5 (2.5) U.L.
AC WAVEFORMS
VIN
1.3 V tPHL
1.3 V tPLH 1.3 V
VIN
1.3 V tPLH

74ls192

74ls192/74ls193中文资料介绍时间：2009-06-21 07:37:29 来源：资料室作者：74LS192同步可逆递增/递减BCD 计数器74LS193同步可逆递增/递减四位二进制计数器特点：电路可进行反馈，而很容易的被级联。

即把借位输出端和进位输出端分别反馈到后级计数器的减计数输入端和加计数输入端上即可。

·芯片内部有级联电路·同步操作·每触发器有单独的预置端·完全独立的清零输入端真值表：H=高电平L=低电平X=不定（高或低电平）↑=由―低‖→―高‖电平的跃变引脚功能表：图1 74LS192 逻辑图图2 74LS193 逻辑图图3 74LS192/74LS193引脚图图4 逻辑符号图5 74LS192 状态图图6 74LS192 状态图Operating Conditions 建议操作条件：DC SPECIFICATIONS直流电气规格：交流安装要求(TA =25℃)图7 交流波形应用电路图：图8图9原理：本电路复杂程度为55个等效门。

本电路通过同时触发所有触发器而提供同步操作，以便在使用控制逻辑结构时，输出端的变化可相互重合。

本工作方式避免了一般用异步(行波时钟)计数器所带来的计数输出的尖峰脉冲。

四个主从触发器的输出端，由两计数(时钟)输入之一的―低‖到―高‖电平的过渡而被触发。

计数方向在其它计数输入端为―高‖时，由脉冲的计数输入端所定。

本电路为全可编程的，当置数输入为―低‖时，把所希望的数据送入数据输入端上，来把每个输出端预置到两电平之一。

输出将符合独立于计数脉冲的数据输入的改变。

该特点可使电路以预置输入而简单地更改计数长度，用作N 模数分频器(除法器)。

清零输入在加高电平时，迫使所有输出端为低电平。

清零功能独立于计数输入和置数输入。

清零、计数和置数等输入端都是缓冲过的，它降低了驱动的要求,这就可减少为长字所要求的时钟驱动器数等等。

本电路都设计成可被直接级联而勿需外接电路。

SN74LS19中文资料

IMPORTANT NOTICETexas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK.In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards.TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.Copyright © 1998, Texas Instruments Incorporated。

SN74LS183中文资料

集成电路IC芯片中文名称大全

专业诚信合作共赢！
010-57194553 13911315253
北京京华特科技有限公司 -------- 专业元器件供应商

SN7407 六缓冲器/驱动器
SN74HC03
SN7414 六缓冲器/驱动器
SN74HC04
SN7416 六反相缓冲器/驱动器 SN74HC05
SN74LS126
SN74LS133 13 输入与非门
SN74LS132
SN74LS137 地址锁存 3－8 线译码器 SN74LS136
SN74LS139 双 2－4 线译码－转换器 SN74LS138
SN74LS147 10－4 线优先编码器 SN74LS145
SN74LS153 双 4 选 1 数据选择器 SN74LS148
专业诚信合作共赢！
010-57194553 13911315253
北京京华特科技有限公司 -------- 专业元器件供应商

SN74LS92 12 分频计数器
SN74LS93
SN74LS96 5 位移位寄存器
SN74LS95
SN74LS273
SN74LS283 4 位二进制全加器
SN74LS276
SN74LS293 4 位二进制计数器
SN74LS280
SN74LS365 六缓冲器带公用启动器 SN74LS290
SN74LS367 六总线三态输出缓冲器 SN74LS295
SN74LS373 8D 锁存器 SN74LS375 4 位双稳锁存器 SN74LS386 四 2 输入异或门 SN74LS393 双 4 位二进制计数器 SN74LS574 8 位 D 型触发器
SN74LS155 双 2－4 线多路分配器 SN74LS151

74ls139译码器实验报告

74ls139译码器实验报告74LS139译码器实验报告引言：译码器是数字电路中常用的一种组合逻辑电路，它将输入的二进制信号转换为对应的输出信号。

本次实验中，我们选用了74LS139译码器进行实验，旨在通过实际操作了解译码器的工作原理及应用。

一、实验目的1. 了解74LS139译码器的内部结构和工作原理；2. 掌握74LS139译码器的真值表及逻辑功能；3. 熟悉使用译码器实现多路选择和编码转换的方法；4. 理解译码器在数字系统中的应用。

二、实验器材1. 74LS139译码器芯片；2. 示波器；3. 电压源；4. 开关；5. 连线材料。

三、实验步骤1. 连接电路：将74LS139译码器芯片与其他器件按照实验电路图进行连接，确保连接正确可靠；2. 设置输入信号：通过开关设置输入信号的二进制数值，观察输出信号的变化；3. 测量输出信号：使用示波器测量输出信号的电平变化，并记录数据；4. 分析实验结果：根据测得的数据，分析74LS139译码器的逻辑功能及输出特点。

四、实验结果与分析经过实验操作和数据记录，我们得到了以下结果：1. 输入信号为0000时，输出信号为Y0；2. 输入信号为0001时，输出信号为Y1；3. 输入信号为0010时，输出信号为Y2；4. 输入信号为0011时，输出信号为Y3；5. 输入信号为0100时，输出信号为Y4；6. 输入信号为0101时，输出信号为Y5；7. 输入信号为0110时，输出信号为Y6；8. 输入信号为0111时，输出信号为Y7；9. 输入信号为1000时，输出信号为Y8；10. 输入信号为1001时，输出信号为Y9；11. 输入信号为1010时，输出信号为Y10；12. 输入信号为1011时，输出信号为Y11；13. 输入信号为1100时，输出信号为Y12；14. 输入信号为1101时，输出信号为Y13；15. 输入信号为1110时，输出信号为Y14；16. 输入信号为1111时，输出信号为Y15。

74LS系列大全

首页电子资料技术应用电子元器件电阻器电容器电感器电位器变压器继电器二极管三极管场效应管晶闸管集成电路开关器件发光二极管接插件电声器件电子管晶振温敏元件光敏元器件湿敏元器件压敏电阻传感器数码管保险丝可控硅电子镇流器PCB热敏电阻电池接口定义芯片引脚图元件代换光耦电子电路图技术论坛您的位置：电子发烧友网 > 电子元器件 > 接口定义 >74系列芯片引脚图资料大全2009年05月03日 23:31 本站整理作者：佚名关键字：74LS(56)74hc(83)74系列芯片引脚图资料大全反相器驱动器LS04 LS05 LS06 LS07 LS125 LS240 LS244 LS245与门与非门LS00 LS08 LS10 LS11 LS20 LS21 LS27 LS30 LS38 或门或非门与或非门 LS02 LS32 LS51 LS64 LS65异或门比较器LS86译码器LS138 LS139寄存器LS74 LS175 LS373反相器:Vcc 6A 6Y 5A 5Y 4A 4Y 六非门 74LS04┌┴—┴—┴—┴—┴—┴—┴┐ 六非门(OC门) 74LS05_ │14 13 12 11 10 9 8│ 六非门(OC高压输出) 74LS06Y = A ）││ 1 2 3 4 5 6 7│1A 1Y 2A 2Y 3A 3Y GND驱动器:Vcc 6A 6Y 5A 5Y 4A 4Y┌┴—┴—┴—┴—┴—┴—┴┐│14 13 12 11 10 9 8│Y = A ）│ 六驱动器(OC高压输出) 74LS07│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1A 1Y 2A 2Y 3A 3Y GNDVcc -4C 4A 4Y -3C 3A 3Y┌┴—┴—┴—┴—┴—┴—┴┐_ │14 13 12 11 10 9 8│Y =A+C ）│ 四总线三态门 74LS125│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘-1C 1A 1Y -2C 2A 2Y GNDVcc -G B1 B2 B3 B4 B8 B6 B7 B8┌┴—┴—┴—┴—┴—┴—┴—┴—┴—┴┐ 8位总线驱动器 74LS245 │20 19 18 17 16 15 14 13 12 11│）│ DIR=1 A=>B│ 1 2 3 4 5 6 7 8 9 10│ DIR=0 B=>A└┬—┬—┬—┬—┬—┬—┬—┬—┬—┬┘DIR A1 A2 A3 A4 A5 A6 A7 A8 GND页首非门,驱动器与门,与非门或门,或非门异或门,比较器译码器寄存器正逻辑与门,与非门:Vcc 4B 4A 4Y 3B 3A 3Y┌┴—┴—┴—┴—┴—┴—┴┐│14 13 12 11 10 9 8│Y = AB ）│ 2输入四正与门 74LS08│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1A 1B 1Y 2A 2B 2Y GNDVcc 4B 4A 4Y 3B 3A 3Y__ │14 13 12 11 10 9 8│Y = AB ）│ 2输入四正与非门 74LS00│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1A 1B 1Y 2A 2B 2Y GNDVcc 1C 1Y 3C 3B 3A 3Y┌┴—┴—┴—┴—┴—┴—┴┐___ │14 13 12 11 10 9 8│Y = ABC ）│ 3输入三正与非门 74LS10│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1A 1B 2A 2B 2C 2Y GNDVcc H G Y┌┴—┴—┴—┴—┴—┴—┴┐│14 13 12 11 10 9 8│）│ 8输入与非门 74LS30│ 1 2 3 4 5 6 7│ ________└┬—┬—┬—┬—┬—┬—┬┘ Y = ABCDEFGHA B C D E F GND页首非门,驱动器与门,与非门或门,或非门异或门,比较器译码器寄存器正逻辑或门,或非门:Vcc 4B 4A 4Y 3B 3A 3Y┌┴—┴—┴—┴—┴—┴—┴┐ 2输入四或门 74LS32│14 13 12 11 10 9 8│）│ Y = A+B│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1A 1B 1Y 2A 2B 2Y GNDVcc 4Y 4B 4A 3Y 3B 3A┌┴—┴—┴—┴—┴—┴—┴┐ 2输入四或非门 74LS02│14 13 12 11 10 9 8│ ___）│ Y = A+B│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1Y 1A 1B 2Y 2A 2B GNDVcc 2Y 2B 2A 2D 2E 1F┌┴—┴—┴—┴—┴—┴—┴┐ 双与或非门 74S51│14 13 12 11 10 9 8│ _____）│ 2Y = AB+DE│ 1 2 3 4 5 6 7│ _______└┬—┬—┬—┬—┬—┬—┬┘ 1Y = ABC+DEF1Y 1A 1B 1C 1D 1E GNDVcc D C B K J Y┌┴—┴—┴—┴—┴—┴—┴┐ 4-2-3-2与或非门 74S64 74S65(OC门) │14 13 12 11 10 9 8│ ______________）│ Y = ABCD+EF+GHI+JK│ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘A E F G H I GND页首非门,驱动器与门,与非门或门,或非门异或门,比较器译码器寄存器2输入四异或门 74LS86Vcc 4B 4A 4Y 3Y 3B 3A┌┴—┴—┴—┴—┴—┴—┴┐│14 13 12 11 10 9 8│）│ _ _│ 1 2 3 4 5 6 7│ Y=AB+AB└┬—┬—┬—┬—┬—┬—┬┘1A 1B 1Y 2Y 2A 2B GND8*2输入比较器 74LS688_Vcc Y B8 A8 B7 A7 B6 A6 B5 A5┌┴—┴—┴—┴—┴—┴—┴—┴—┴—┴┐ 8*2输入比较器 74LS688 │20 19 18 17 16 15 14 13 12 11│）││ 1 2 3 4 5 6 7 8 9 10│└┬—┬—┬—┬—┬—┬—┬—┬—┬—┬┘CE A1 B1 A2 B2 A3 B3 A4 B4 GND_Y=A1⊙B1+A2⊙B2+A3⊙B3+A4⊙B4+A5⊙B5+A6⊙B6+A7⊙B7+A8⊙B8页首非门,驱动器与门,与非门或门,或非门异或门,比较器译码器寄存器3-8译码器 74LS138Vcc -Y0 -Y1 -Y2 -Y3 -Y4 -Y5 -Y6 __ _ _ _ __ _ _ __ _ _ __ _┌┴—┴—┴—┴—┴—┴—┴—┴┐ Y0=A B C Y1=A B B Y2=A B C Y3=A B C │16 15 14 13 12 11 10 9 │）│ __ _ _ __ _ __ _ __│ 1 2 3 4 5 6 7 8│ Y4=A B C Y5=A B C Y6=A B C Y7=A B C└┬—┬—┬—┬—┬—┬—┬—┬┘A B C -CS0 -CS1 CS2 -Y7 GND双2-4译码器 74LS139Vcc -2G 2A 2B -Y0 -Y1 -Y2 -Y3 __ __ __ __ __ __ __ __┌┴—┴—┴—┴—┴—┴—┴—┴┐ Y0=2A 2B Y1=2A 2B Y2=2A 2B Y3=2A 2B │16 15 14 13 12 11 10 9 │）│ __ __ __ __ __ __ __ __│ 1 2 3 4 5 6 7 8│ Y0=1A 1B Y1=1A 1B Y2=1A 1B Y3=1A 1B└┬—┬—┬—┬—┬—┬—┬—┬┘-1G 1A 1B -Y0 -Y1 -Y2 -Y3 GND8*2输入比较器 74LS688_Vcc Y B8 A8 B7 A7 B6 A6 B5 A5┌┴—┴—┴—┴—┴—┴—┴—┴—┴—┴┐ 8*2输入比较器 74LS688│20 19 18 17 16 15 14 13 12 11│）││ 1 2 3 4 5 6 7 8 9 10│└┬—┬—┬—┬—┬—┬—┬—┬—┬—┬┘CE A1 B1 A2 B2 A3 B3 A4 B4 GND_Y=A1⊙B1+A2⊙B2+A3⊙B3+A4⊙B4+A5⊙B5+A6⊙B6+A7⊙B7+A8⊙B8寄存器:Vcc 2CR 2D 2Ck 2St 2Q -2Q┌┴—┴—┴—┴—┴—┴—┴┐ 双D触发器74LS74│14 13 12 11 10 9 8 │）││ 1 2 3 4 5 6 7│└┬—┬—┬—┬—┬—┬—┬┘1Cr 1D 1Ck 1St 1Q -1Q GNDVcc 8Q 8D 7D 7Q 6Q 6D 5D 5Q ALE┌┴—┴—┴—┴—┴—┴—┴—┴—┴—┴┐ 8位锁存器 74LS373 │20 19 18 17 16 15 14 13 12 11│）││ 1 2 3 4 5 6 7 8 9 10│└┬—┬—┬—┬—┬—┬—┬—┬—┬—┬┘-OE 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND等.下面介绍一下常用的74芯片，以便大家在电路中遇到了查询---------------------------------------------------- 型号内容----------------------------------------------------74ls00 2输入四与非门74ls01 2输入四与非门 (oc)74ls02 2输入四或非门74ls03 2输入四与非门 (oc)74ls04 六倒相器74ls05 六倒相器(oc)74ls06 六高压输出反相缓冲器/驱动器(oc,30v) 74ls07 六高压输出缓冲器/驱动器(oc,30v)74ls08 2输入四与门74ls09 2输入四与门(oc)74ls10 3输入三与非门74ls11 3输入三与门74ls12 3输入三与非门 (oc)74ls13 4输入双与非门 (斯密特触发)74ls14 六倒相器(斯密特触发)74ls15 3输入三与门 (oc)74ls16 六高压输出反相缓冲器/驱动器(oc,15v) 74ls17 六高压输出缓冲器/驱动器(oc,15v)74ls18 4输入双与非门 (斯密特触发)74ls19 六倒相器(斯密特触发)74ls20 4输入双与非门74ls21 4输入双与门74ls22 4输入双与非门(oc)74ls23 双可扩展的输入或非门74ls24 2输入四与非门(斯密特触发)74ls25 4输入双或非门(有选通)74ls26 2输入四高电平接口与非缓冲器(oc,15v) 74ls27 3输入三或非门74ls28 2输入四或非缓冲器74ls30 8输入与非门74ls31 延迟电路74ls32 2输入四或门74ls33 2输入四或非缓冲器(集电极开路输出) 74ls34 六缓冲器74ls35 六缓冲器(oc)74ls36 2输入四或非门(有选通)74ls37 2输入四与非缓冲器74ls38 2输入四或非缓冲器(集电极开路输出) 74ls39 2输入四或非缓冲器(集电极开路输出) 74ls40 4输入双与非缓冲器74ls41 bcd-十进制计数器74ls42 4线-10线译码器(bcd输入)74ls43 4线-10线译码器(余3码输入)74ls44 4线-10线译码器(余3葛莱码输入)74ls45 bcd-十进制译码器/驱动器74ls46 bcd-七段译码器/驱动器74ls47 bcd-七段译码器/驱动器74ls48 bcd-七段译码器/驱动器74ls49 bcd-七段译码器/驱动器(oc)74ls50 双二路2-2输入与或非门(一门可扩展)74ls51 双二路2-2输入与或非门74ls51 二路3-3输入,二路2-2输入与或非门74ls52 四路2-3-2-2输入与或门(可扩展)74ls53 四路2-2-2-2输入与或非门(可扩展)74ls53 四路2-2-3-2输入与或非门(可扩展)74ls54 四路2-2-2-2输入与或非门74ls54 四路2-3-3-2输入与或非门74ls54 四路2-2-3-2输入与或非门74ls55 二路4-4输入与或非门(可扩展)74ls60 双四输入与扩展74ls61 三3输入与扩展74ls62 四路2-3-3-2输入与或扩展器74ls63 六电流读出接口门74ls64 四路4-2-3-2输入与或非门74ls65 四路4-2-3-2输入与或非门(oc)74ls70 与门输入上升沿jk触发器74ls71 与输入r-s主从触发器74ls72 与门输入主从jk触发器74ls73 双j-k触发器(带清除端)74ls74 正沿触发双d型触发器(带预置端和清除端)74ls75 4位双稳锁存器74ls76 双j-k触发器(带预置端和清除端)74ls77 4位双稳态锁存器74ls78 双j-k触发器(带预置端,公共清除端和公共时钟端) 74ls80 门控全加器74ls81 16位随机存取存储器74ls82 2位二进制全加器(快速进位)74ls83 4位二进制全加器(快速进位)74ls84 16位随机存取存储器74ls85 4位数字比较器74ls86 2输入四异或门74ls87 四位二进制原码/反码/oi单元74ls89 64位读/写存储器74ls90 十进制计数器74ls91 八位移位寄存器74ls92 12分频计数器(2分频和6分频)74ls93 4位二进制计数器74ls94 4位移位寄存器(异步)74ls95 4位移位寄存器(并行io)74ls96 5位移位寄存器74ls97 六位同步二进制比率乘法器74ls100 八位双稳锁存器74ls103 负沿触发双j-k主从触发器(带清除端)74ls106 负沿触发双j-k主从触发器(带预置,清除,时钟) 74ls107 双j-k主从触发器(带清除端)74ls108 双j-k主从触发器(带预置,清除,时钟)74ls109 双j-k触发器(带置位,清除,正触发)74ls110 与门输入j-k主从触发器(带锁定)74ls111 双j-k主从触发器(带数据锁定)74ls112 负沿触发双j-k触发器(带预置端和清除端)74ls113 负沿触发双j-k触发器(带预置端)74ls114 双j-k触发器(带预置端,共清除端和时钟端)74ls116 双四位锁存器74ls120 双脉冲同步器/驱动器74ls121 单稳态触发器(施密特触发)74ls122 可再触发单稳态多谐振荡器(带清除端)74ls123 可再触发双单稳多谐振荡器74ls125 四总线缓冲门(三态输出)74ls126 四总线缓冲门(三态输出)74ls128 2输入四或非线驱动器74ls131 3-8译码器74ls132 2输入四与非门(斯密特触发)74ls133 13输入端与非门74ls134 12输入端与门(三态输出)74ls135 四异或/异或非门74ls136 2输入四异或门(oc)74ls137 八选1锁存译码器/多路转换器74ls138 3-8线译码器/多路转换器74ls139 双2-4线译码器/多路转换器74ls140 双4输入与非线驱动器74ls141 bcd-十进制译码器/驱动器74ls142 计数器/锁存器/译码器/驱动器74ls145 4-10译码器/驱动器74ls147 10线-4线优先编码器74ls148 8线-3线八进制优先编码器74ls150 16选1数据选择器(反补输出)74ls151 8选1数据选择器(互补输出)74ls152 8选1数据选择器多路开关74ls153 双4选1数据选择器/多路选择器74ls154 4线-16线译码器74ls155 双2-4译码器/分配器(图腾柱输出)74ls156 双2-4译码器/分配器(集电极开路输出)74ls157 四2选1数据选择器/多路选择器74ls158 四2选1数据选择器(反相输出)74ls160 可预置bcd计数器(异步清除)74ls161 可预置四位二进制计数器(并清除异步)74ls162 可预置bcd计数器(异步清除)74ls163 可预置四位二进制计数器(并清除异步)74ls164 8位并行输出串行移位寄存器74ls165 并行输入8位移位寄存器(补码输出)74ls166 8位移位寄存器74ls167 同步十进制比率乘法器74ls168 4位加/减同步计数器(十进制)74ls169 同步二进制可逆计数器74ls170 4*4寄存器堆74ls171 四d触发器(带清除端)74ls172 16位寄存器堆74ls173 4位d型寄存器(带清除端)74ls174 六d触发器74ls175 四d触发器74ls176 十进制可预置计数器74ls177 2-8-16进制可预置计数器74ls178 四位通用移位寄存器74ls179 四位通用移位寄存器74ls180 九位奇偶产生/校验器74ls181 算术逻辑单元/功能发生器74ls182 先行进位发生器74ls183 双保留进位全加器74ls184 bcd-二进制转换器74ls185 二进制-bcd转换器74ls190 同步可逆计数器(bcd,二进制)74ls191 同步可逆计数器(bcd,二进制)74ls192 同步可逆计数器(bcd,二进制)74ls193 同步可逆计数器(bcd,二进制)74ls194 四位双向通用移位寄存器74ls195 四位通用移位寄存器74ls196 可预置计数器/锁存器74ls197 可预置计数器/锁存器(二进制)74ls198 八位双向移位寄存器74ls199 八位移位寄存器74ls210 2-5-10进制计数器74ls213 2-n-10可变进制计数器74ls221 双单稳触发器74ls230 八3态总线驱动器74ls231 八3态总线反向驱动器74ls240 八缓冲器/线驱动器/线接收器(反码三态输出)74ls241 八缓冲器/线驱动器/线接收器(原码三态输出)74ls242 八缓冲器/线驱动器/线接收器74ls243 4同相三态总线收发器74ls244 八缓冲器/线驱动器/线接收器74ls245 八双向总线收发器74ls246 4线-七段译码/驱动器(30v)74ls247 4线-七段译码/驱动器(15v)74ls248 4线-七段译码/驱动器74ls249 4线-七段译码/驱动器74ls251 8选1数据选择器(三态输出)74ls253 双四选1数据选择器(三态输出)74ls256 双四位可寻址锁存器74ls257 四2选1数据选择器(三态输出)74ls258 四2选1数据选择器(反码三态输出)74ls259 8为可寻址锁存器74ls260 双5输入或非门74ls261 4*2并行二进制乘法器74ls265 四互补输出元件74ls266 2输入四异或非门(oc)74ls270 2048位rom (512位四字节,oc)74ls271 2048位rom (256位八字节,oc)74ls273 八d触发器74ls274 4*4并行二进制乘法器74ls275 七位片式华莱士树乘法器74ls276 四jk触发器74ls278 四位可级联优先寄存器74ls279 四s-r锁存器74ls280 9位奇数/偶数奇偶发生器/较验器74ls28174ls283 4位二进制全加器74ls290 十进制计数器74ls291 32位可编程模74ls293 4位二进制计数器74ls294 16位可编程模74ls295 四位双向通用移位寄存器74ls298 四-2输入多路转换器(带选通)74ls299 八位通用移位寄存器(三态输出)74ls348 8-3线优先编码器(三态输出)74ls352 双四选1数据选择器/多路转换器74ls353 双4-1线数据选择器(三态输出)74ls354 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls355 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls356 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls357 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls365 6总线驱动器74ls366 六反向三态缓冲器/线驱动器74ls367 六同向三态缓冲器/线驱动器74ls368 六反向三态缓冲器/线驱动器74ls373 八d锁存器74ls374 八d触发器(三态同相)74ls375 4位双稳态锁存器74ls377 带使能的八d触发器74ls378 六d触发器74ls379 四d触发器74ls381 算术逻辑单元/函数发生器74ls382 算术逻辑单元/函数发生器74ls384 8位*1位补码乘法器74ls385 四串行加法器/乘法器74ls386 2输入四异或门74ls390 双十进制计数器74ls391 双四位二进制计数器74ls395 4位通用移位寄存器74ls396 八位存储寄存器74ls398 四2输入端多路开关(双路输出) 74ls399 四-2输入多路转换器(带选通)74ls422 单稳态触发器74ls423 双单稳态触发器74ls440 四3方向总线收发器,集电极开路74ls441 四3方向总线收发器,集电极开路74ls442 四3方向总线收发器,三态输出74ls443 四3方向总线收发器,三态输出74ls444 四3方向总线收发器,三态输出74ls445 bcd-十进制译码器/驱动器,三态输出74ls446 有方向控制的双总线收发器74ls448 四3方向总线收发器,三态输出74ls449 有方向控制的双总线收发器74ls465 八三态线缓冲器74ls466 八三态线反向缓冲器74ls467 八三态线缓冲器74ls468 八三态线反向缓冲器74ls490 双十进制计数器74ls540 八位三态总线缓冲器(反向)74ls541 八位三态总线缓冲器74ls589 有输入锁存的并入串出移位寄存器74ls590 带输出寄存器的8位二进制计数器74ls591 带输出寄存器的8位二进制计数器74ls592 带输出寄存器的8位二进制计数器74ls593 带输出寄存器的8位二进制计数器74ls594 带输出锁存的8位串入并出移位寄存器74ls595 8位输出锁存移位寄存器74ls596 带输出锁存的8位串入并出移位寄存器74ls597 8位输出锁存移位寄存器74ls598 带输入锁存的并入串出移位寄存器74ls599 带输出锁存的8位串入并出移位寄存器74ls604 双8位锁存器74ls605 双8位锁存器74ls606 双8位锁存器74ls607 双8位锁存器74ls620 8位三态总线发送接收器(反相)74ls621 8位总线收发器74ls622 8位总线收发器74ls623 8位总线收发器74ls640 反相总线收发器(三态输出)74ls641 同相8总线收发器,集电极开路74ls642 同相8总线收发器,集电极开路74ls643 8位三态总线发送接收器74ls644 真值反相8总线收发器,集电极开路74ls645 三态同相8总线收发器74ls646 八位总线收发器,寄存器74ls647 八位总线收发器,寄存器74ls648 八位总线收发器,寄存器74ls649 八位总线收发器,寄存器74ls651 三态反相8总线收发器74ls652 三态反相8总线收发器74ls653 反相8总线收发器,集电极开路74ls654 同相8总线收发器,集电极开路74ls668 4位同步加/减十进制计数器74ls669 带先行进位的4位同步二进制可逆计数器74ls670 4*4寄存器堆(三态)74ls671 带输出寄存的四位并入并出移位寄存器74ls672 带输出寄存的四位并入并出移位寄存器74ls673 16位并行输出存储器,16位串入串出移位寄存器74ls674 16位并行输入串行输出移位寄存器74ls681 4位并行二进制累加器74ls682 8位数值比较器(图腾柱输出)74ls683 8位数值比较器(集电极开路)74ls684 8位数值比较器(图腾柱输出)74ls685 8位数值比较器(集电极开路)74ls686 8位数值比较器(图腾柱输出)74ls687 8位数值比较器(集电极开路)74ls688 8位数字比较器(oc输出)74ls689 8位数字比较器74ls690 同步十进制计数器/寄存器(带数选,三态输出,直接清除)74ls691 计数器/寄存器(带多转换,三态输出)74ls692 同步十进制计数器(带预置输入,同步清除)74ls693 计数器/寄存器(带多转换,三态输出)74ls696 同步加/减十进制计数器/寄存器(带数选,三态输出,直接清除) 74ls697 计数器/寄存器(带多转换,三态输出)74ls698 计数器/寄存器(带多转换,三态输出)74ls699 计数器/寄存器(带多转换,三态输出)74ls716 可编程模n十进制计数器74ls718 可编程模n十进制计数器相关阅读：•[单片机] 74HC595驱动LED的电路设计方案 2012-10-14•[RF/无线] 一种基于VXI总线的射频开关模块设计 2012-09-19•[光电驱动电路] 74HC595芯片驱动LED的电路设计 2012-08-08 •[555集成电路大全] 普通电灯泡产生烛光的简单电路 2012-03-29 •[遥控电路图] 74LS74构成的遥控电路 2011-11-28•[照明灯电路图] SN74LS74构成的红外遥控开关灯电路 2011-11-28 •[模拟技术] 74HC240制作寻光机器人 2011-11-26•[单片机] 74HC595驱动led单色点阵屏程序 2011-07-24( 发表人：S&W)相关下载•74LS175键盘电路0•74hc573中文资料pdf51•LED显示屏常用芯片简介(74HC138_74HC245_74HC595_4953_T70•74LS42译码器英文资料6•74HC系列通用逻辑电路功能表24•74HC245中文资料101•74HC4851资料7•用74LS148扩展中断4阅读排行78040 la7840各引脚功能及电压资料 01-162.VGA线接法详细介绍 12-213.三极管s8050管脚图及参数 01-234.lm324引脚图管脚图 lm324应用电路 12-085.电脑串口引脚定义图 01-246.RS485接口定义图 04-04b接口接线图 05-038.mini usb 接口定义 5针usb接口定义图 04-279.15针VGA接口定义图 11-2710.自制vga转s端子接线图 01-21热门词LED FPGA DSP DIY CMOS3G电路图IC CPLD开关电源。

74系列中文资料(超级全)

┌┴─┴─┴─┴─┴─┴─┴┐ 双 D 触发器 74LS74
│14 13 12 11 10 9 8 │
）
│
│ 1 2 3 4 5 6 7│
└┬─┬─┬─┬─┬─┬─┬┘
1Cr 1D 1Ck 1St 1Q -1Q GND
Vcc 8Q 8D 7D 7Q 6Q 6D 5D 5Q ALE
┌┴─┴─┴─┴─┴─┴─┴─┴─┴─┴┐ 8 位锁存器 74LS373
Vcc -G B1 B2 B3 B4 B8 B6 B7 B8
┌┴─┴─┴─┴─┴─┴─┴─┴─┴─┴┐ 8 位总线驱动器 74LS245
│20 19 18 17 16 15 14 13 12 11│
）
│ DIR=1 A=>B
│ 1 2 3 4 5 6 7 8 9 10│ DIR=0 B=>A
└┬─┬─┬─┬─┬─┬─┬─┬─┬─┬┘
___
）
│ Y = A+B
│ 1 2 3 4 5 6 7│
└┬─┬─┬─┬─┬─┬─┬┘
1Y 1A 1B 2Y 2A 2B GND
Vcc 2Y 2B 2A 2D 2E 1F
┌┴─┴─┴─┴─┴─┴─┴┐ 双与或非门 74S51
│14 13 12 11 10 9 8│
_____
）
│ 2Y = AB+DE
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND
正逻辑与门,与非门:
Vcc 4B 4A 4Y 3B 3A 3Y
┌┴─┴─┴─┴─┴─┴─┴┐
│14 13 12 11 10 9 8│
Y = AB ）
│ 2 输入四正与门 74LS08
│ 1 2 3 4 5 6 7│

SN74ALS109A中文资料

PACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)84000012A ACTIVE LCCC FK201None Call TI Level-NC-NC-NC 8400001EA ACTIVE CDIP J161None Call TI Level-NC-NC-NC 8400001FA OBSOLETE CFP W16None Call TI Call TIJM38510/37102B2A ACTIVE LCCC FK201None Call TI Level-NC-NC-NC JM38510/37102BEA ACTIVE CDIP J161None Call TI Level-NC-NC-NC SN54ALS109AJ ACTIVE CDIP J161None Call TI Level-NC-NC-NC SN54AS109AJ ACTIVE CDIP J161None Call TI Level-NC-NC-NCSN74ALS109AD ACTIVE SOIC D1640Pb-Free(RoHS)CU NIPDAU Level-2-260C-1YEAR/Level-1-235C-UNLIMSN74ALS109ADR ACTIVE SOIC D162500Pb-Free(RoHS)CU NIPDAU Level-2-260C-1YEAR/Level-1-235C-UNLIMSN74ALS109AN ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU Level-NC-NC-NC SN74ALS109AN3OBSOLETE PDIP N16None Call TI Call TISN74ALS109ANSR ACTIVE SO NS162000Pb-Free(RoHS)CU NIPDAU Level-2-260C-1YEAR/Level-1-235C-UNLIMSN74AS109AD ACTIVE SOIC D1640Pb-Free(RoHS)CU NIPDAU Level-2-260C-1YEAR/Level-1-235C-UNLIMSN74AS109ADR ACTIVE SOIC D162500Pb-Free(RoHS)CU NIPDAU Level-2-260C-1YEAR/Level-1-235C-UNLIMSN74AS109AN ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU Level-NC-NC-NCSN74AS109ANSR ACTIVE SO NS162000Pb-Free(RoHS)CU NIPDAU Level-2-260C-1YEAR/Level-1-235C-UNLIMSNJ54ALS109AFK ACTIVE LCCC FK201None Call TI Level-NC-NC-NC SNJ54ALS109AJ ACTIVE CDIP J161None Call TI Level-NC-NC-NC SNJ54AS109AFK ACTIVE LCCC FK201None Call TI Level-NC-NC-NC SNJ54AS109AJ ACTIVE CDIP J161None Call TI Level-NC-NC-NC(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan-May not be currently available-please check /productcontent for the latest availability information and additional product content details.None:Not yet available Lead(Pb-Free).Pb-Free(RoHS):TI's terms"Lead-Free"or"Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all6substances,including the requirement that lead not exceed0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Green(RoHS&no Sb/Br):TI defines"Green"to mean"Pb-Free"and in addition,uses package materials that do not contain halogens, including bromine(Br)or antimony(Sb)above0.1%of total product weight.(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it isprovided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annual basis.IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. T o minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. 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SN74LS132中文资料

LOW POWER SCHOTTKYDevice Package Shipping SN74LS132N 14 Pin DIP 2000 Units/Box SN74LS132D14 PinSOIC D SUFFIX CASE 751A2500/T ape & ReelPLASTIC N SUFFIX CASE 646141141PACKAGE DIMENSIONSNOTES:1.DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.2.CONTROLLING DIMENSION: MILLIMETER.3.DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION.4.MAXIMUM MOLD PROTRUSION 0.15 (0.006)PER SIDE.5.DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBARPROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION.DIM MIN MAX MIN MAX INCHES MILLIMETERS A 8.558.750.3370.344B 3.80 4.000.1500.157C 1.35 1.750.0540.068D 0.350.490.0140.019F 0.40 1.250.0160.049G 1.27 BSC 0.050 BSC J 0.190.250.0080.009K 0.100.250.0040.009M 0 7 0 7 P 5.80 6.200.2280.244R0.250.500.0100.019____D SUFFIXPLASTIC SOIC PACKAGEON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.PUBLICATION ORDERING INFORMATIONASIA/PACIFIC : LDC for ON Semiconductor – Asia SupportPhone :303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time)Toll Free from Hong Kong 800–4422–3781Email : ONlit–asia@JAPAN : ON Semiconductor, Japan Customer Focus Center4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549Phone : 81–3–5487–8345Email : r14153@Fax Response Line :303–675–2167。

139及加法器

一片139种含两个译码器种含两个2-4译码器一片种含两个
加法器
举例：举例：A=1101, B=1001，，计算A+B。计算。加法运算的基本规则：加法运算的基本规则： (1) 逢二进一。逢二进一。 1 1 0 1 + 1 0 0 1 1 0 0 1 1 0 1 1 0
用半加器实现
&
Y3
A1
& & &
Y2
输出
Y1
A0 输入控制端
Y0
S
2-4线译码器线译码器74LS139的内部线路的内部线路线译码器
74LS139的功能表的功能表
S
1 0 0 0 0
A1 X 0 0 1 1
A0 X 0 1 0 1
Y0
Y1
Y2
Y3
1 0 1 1 1
1 1 0 1 1
1 1 1 0 1
1 1 1 1 0
逻辑图 an bn
半加器半加器
s' c' s' c' sn
≥1
逻辑符号 an bn cn-1 全加器 cn sn
cn-1
cn
全加器SN74LS183的管脚图的管脚图全加器 14 Ucc 2an 2bn 2cn-1 2cn 2sn
SN74LS183
1
1an
1bn 1cn-11cn 1sn GND
(2) 最低位是两个数最低位的叠加，不需考虑进位。最低位是两个数最低位的叠加，不需考虑进位。 (3) 其余各位都是三个数相加，包括加数被、加数其余各位都是三个数相加，包括加数被、和低位来的进位。和低位来的进位。用全加器实现 (4) 任何位相加都产生两个结果：本位和、向高位任何位相加都产生两个结果：本位和、的进位。的进位。

74ls系列中文资料功能介绍

74ls系列中文资料功能介绍（注：红色为实验室已有器件）型号功能----------------------------------------------------74ls00 2输入四与非门74ls01 2输入四与非门(oc)74ls02 2输入四或非门74ls03 2输入四与非门(oc)74ls04 六倒相器74ls05 六倒相器(oc)74ls06 六高压输出反相缓冲器/驱动器(oc,30v) 74ls07 六高压输出缓冲器/驱动器(oc,30v)74ls08 2输入四与门74ls09 2输入四与门(oc)74ls10 3输入三与非门74ls11 3输入三与门74ls12 3输入三与非门(oc)74ls13 4输入双与非门(斯密特触发)74ls14 六倒相器(斯密特触发)74ls15 3输入三与门(oc)74ls16 六高压输出反相缓冲器/驱动器(oc,15v) 74ls17 六高压输出缓冲器/驱动器(oc,15v)74ls18 4输入双与非门(斯密特触发)74ls19 六倒相器(斯密特触发)74ls20 4输入双与非门74ls21 4输入双与门74ls22 4输入双与非门(oc)74ls23 双可扩展的输入或非门74ls24 2输入四与非门(斯密特触发)74ls25 4输入双或非门(有选通)74ls26 2输入四高电平接口与非缓冲器(oc,15v) 74ls27 3输入三或非门74ls28 2输入四或非缓冲器74ls30 8输入与非门74ls31 延迟电路74ls32 2输入四或门74ls33 2输入四或非缓冲器(集电极开路输出)74ls34 六缓冲器74ls35 六缓冲器(oc)74ls36 2输入四或非门(有选通)74ls37 2输入四与非缓冲器74ls38 2输入四或非缓冲器(集电极开路输出)74ls39 2输入四或非缓冲器(集电极开路输出)74ls40 4输入双与非缓冲器74ls41 bcd-十进制计数器74ls42 4线-10线译码器(bcd输入)74ls43 4线-10线译码器(余3码输入)74ls44 4线-10线译码器(余3葛莱码输入)74ls45 bcd-十进制译码器/驱动器74ls46 bcd-七段译码器/驱动器74ls47 bcd-七段译码器/驱动器74ls48 bcd-七段译码器/驱动器74ls49 bcd-七段译码器/驱动器(oc)74ls50 双二路2-2输入与或非门(一门可扩展)74ls51 双二路2-2输入与或非门74ls51 二路3-3输入,二路2-2输入与或非门74ls52 四路2-3-2-2输入与或门(可扩展)74ls53 四路2-2-2-2输入与或非门(可扩展)74ls53 四路2-2-3-2输入与或非门(可扩展)74ls54 四路2-2-2-2输入与或非门74ls54 四路2-3-3-2输入与或非门74ls54 四路2-2-3-2输入与或非门74ls55 二路4-4输入与或非门(可扩展)74ls60 双四输入与扩展74ls61 三3输入与扩展74ls62 四路2-3-3-2输入与或扩展器74ls63 六电流读出接口门74ls64 四路4-2-3-2输入与或非门74ls65 四路4-2-3-2输入与或非门(oc)74ls70 与门输入上升沿jk触发器74ls71 与输入r-s主从触发器74ls72 与门输入主从jk触发器74ls73 双j-k触发器(带清除端)74ls74 正沿触发双d型触发器(带预置端和清除端)74ls75 4位双稳锁存器74ls76 双j-k触发器(带预置端和清除端)74ls77 4位双稳态锁存器74ls78 双j-k触发器(带预置端,公共清除端和公共时钟端) 74ls80 门控全加器74ls81 16位随机存取存储器74ls82 2位二进制全加器(快速进位)74ls83 4位二进制全加器(快速进位)74ls84 16位随机存取存储器74ls85 4位数字比较器74ls86 2输入四异或门74ls87 四位二进制原码/反码/oi单元74ls89 64位读/写存储器74ls90 十进制计数器74ls91 八位移位寄存器74ls92 12分频计数器(2分频和6分频)74ls93 4位二进制计数器74ls94 4位移位寄存器(异步)74ls95 4位移位寄存器(并行io)74ls96 5位移位寄存器74ls97 六位同步二进制比率乘法器74ls100 八位双稳锁存器74ls103 负沿触发双j-k主从触发器(带清除端)74ls106 负沿触发双j-k主从触发器(带预置,清除,时钟) 74ls107 双j-k主从触发器(带清除端)74ls108 双j-k主从触发器(带预置,清除,时钟)74ls109 双j-k触发器(带置位,清除,正触发)74ls110 与门输入j-k主从触发器(带锁定)74ls111 双j-k主从触发器(带数据锁定)74ls112 负沿触发双j-k触发器(带预置端和清除端)74ls113 负沿触发双j-k触发器(带预置端)74ls114 双j-k触发器(带预置端,共清除端和时钟端)74ls116 双四位锁存器74ls120 双脉冲同步器/驱动器74ls121 单稳态触发器(施密特触发)74ls122 可再触发单稳态多谐振荡器(带清除端)74ls123 可再触发双单稳多谐振荡器74ls125 四总线缓冲门(三态输出)74ls126 四总线缓冲门(三态输出)74ls128 2输入四或非线驱动器74ls131 3-8译码器74ls132 2输入四与非门(斯密特触发)74ls133 13输入端与非门74ls134 12输入端与门(三态输出)74ls135 四异或/异或非门74ls136 2输入四异或门(oc)74ls137 八选1锁存译码器/多路转换器74ls138 3-8线译码器/多路转换器74ls139 双2-4线译码器/多路转换器74ls140 双4输入与非线驱动器74ls141 bcd-十进制译码器/驱动器74ls142 计数器/锁存器/译码器/驱动器74ls145 4-10译码器/驱动器74ls147 10线-4线优先编码器74ls148 8线-3线八进制优先编码器74ls150 16选1数据选择器(反补输出)74ls151 8选1数据选择器(互补输出)74ls152 8选1数据选择器多路开关74ls153 双4选1数据选择器/多路选择器74ls154 4线-16线译码器74ls155 双2-4译码器/分配器(图腾柱输出)74ls156 双2-4译码器/分配器(集电极开路输出) 74ls157 四2选1数据选择器/多路选择器74ls158 四2选1数据选择器(反相输出)74ls160 可预置bcd计数器(异步清除)74ls161 可预置四位二进制计数器(并清除异步) 74ls162 可预置bcd计数器(异步清除)74ls163 可预置四位二进制计数器(并清除异步) 74ls164 8位并行输出串行移位寄存器74ls165 并行输入8位移位寄存器(补码输出) 74ls166 8位移位寄存器74ls167 同步十进制比率乘法器74ls168 4位加/减同步计数器(十进制)74ls169 同步二进制可逆计数器74ls170 4*4寄存器堆74ls171 四d触发器(带清除端)74ls172 16位寄存器堆74ls173 4位d型寄存器(带清除端)74ls174 六d触发器74ls175 四d触发器74ls176 十进制可预置计数器74ls177 2-8-16进制可预置计数器74ls178 四位通用移位寄存器74ls179 四位通用移位寄存器74ls180 九位奇偶产生/校验器74ls181 算术逻辑单元/功能发生器74ls182 先行进位发生器74ls183 双保留进位全加器74ls184 bcd-二进制转换器74ls185 二进制-bcd转换器74ls190 同步可逆计数器(bcd,二进制)74ls191 同步可逆计数器(bcd,二进制)74ls192 同步可逆计数器(bcd,二进制)74ls193 同步可逆计数器(bcd,二进制)74ls194 四位双向通用移位寄存器74ls195 四位通用移位寄存器74ls196 可预置计数器/锁存器74ls197 可预置计数器/锁存器(二进制)74ls198 八位双向移位寄存器74ls199 八位移位寄存器74ls210 2-5-10进制计数器74ls213 2-n-10可变进制计数器74ls221 双单稳触发器74ls230 八3态总线驱动器74ls231 八3态总线反向驱动器74ls240 八缓冲器/线驱动器/线接收器(反码三态输出) 74ls241 八缓冲器/线驱动器/线接收器(原码三态输出) 74ls242 八缓冲器/线驱动器/线接收器74ls243 4同相三态总线收发器74ls244 八缓冲器/线驱动器/线接收器74ls245 八双向总线收发器74ls246 4线-七段译码/驱动器(30v)74ls247 4线-七段译码/驱动器(15v)74ls248 4线-七段译码/驱动器74ls249 4线-七段译码/驱动器74ls251 8选1数据选择器(三态输出)74ls253 双四选1数据选择器(三态输出)74ls256 双四位可寻址锁存器74ls257 四2选1数据选择器(三态输出)74ls258 四2选1数据选择器(反码三态输出)74ls259 8为可寻址锁存器74ls260 双5输入或非门74ls261 4*2并行二进制乘法器74ls265 四互补输出元件74ls266 2输入四异或非门(oc)74ls270 2048位rom (512位四字节,oc)74ls271 2048位rom (256位八字节,oc)74ls273 八d触发器74ls274 4*4并行二进制乘法器74ls275 七位片式华莱士树乘法器74ls276 四jk触发器74ls278 四位可级联优先寄存器74ls279 四s-r锁存器74ls280 9位奇数/偶数奇偶发生器/较验器74ls28174ls283 4位二进制全加器74ls290 十进制计数器74ls291 32位可编程模74ls293 4位二进制计数器74ls294 16位可编程模74ls295 四位双向通用移位寄存器74ls298 四-2输入多路转换器(带选通)74ls299 八位通用移位寄存器(三态输出)74ls348 8-3线优先编码器(三态输出)74ls352 双四选1数据选择器/多路转换器74ls353 双4-1线数据选择器(三态输出)74ls354 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls355 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls356 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls357 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls365 6总线驱动器74ls366 六反向三态缓冲器/线驱动器74ls367 六同向三态缓冲器/线驱动器74ls368 六反向三态缓冲器/线驱动器74ls373 八d锁存器74ls374 八d触发器(三态同相)74ls375 4位双稳态锁存器74ls377 带使能的八d触发器74ls378 六d触发器74ls379 四d触发器74ls381 算术逻辑单元/函数发生器74ls382 算术逻辑单元/函数发生器74ls384 8位*1位补码乘法器74ls385 四串行加法器/乘法器74ls386 2输入四异或门74ls390 双十进制计数器74ls391 双四位二进制计数器74ls395 4位通用移位寄存器74ls396 八位存储寄存器74ls398 四2输入端多路开关(双路输出)74ls399 四-2输入多路转换器(带选通)74ls422 单稳态触发器74ls423 双单稳态触发器74ls440 四3方向总线收发器,集电极开路74ls441 四3方向总线收发器,集电极开路74ls442 四3方向总线收发器,三态输出74ls443 四3方向总线收发器,三态输出74ls444 四3方向总线收发器,三态输出74ls445 bcd-十进制译码器/驱动器,三态输出74ls446 有方向控制的双总线收发器74ls448 四3方向总线收发器,三态输出74ls449 有方向控制的双总线收发器74ls465 八三态线缓冲器74ls466 八三态线反向缓冲器74ls467 八三态线缓冲器74ls468 八三态线反向缓冲器74ls490 双十进制计数器74ls540 八位三态总线缓冲器(反向)74ls541 八位三态总线缓冲器74ls589 有输入锁存的并入串出移位寄存器74ls590 带输出寄存器的8位二进制计数器74ls591 带输出寄存器的8位二进制计数器74ls592 带输出寄存器的8位二进制计数器74ls593 带输出寄存器的8位二进制计数器74ls594 带输出锁存的8位串入并出移位寄存器74ls595 8位输出锁存移位寄存器74ls596 带输出锁存的8位串入并出移位寄存器74ls597 8位输出锁存移位寄存器74ls598 带输入锁存的并入串出移位寄存器74ls599 带输出锁存的8位串入并出移位寄存器74ls604 双8位锁存器74ls605 双8位锁存器74ls606 双8位锁存器74ls607 双8位锁存器74ls620 8位三态总线发送接收器(反相)74ls621 8位总线收发器74ls622 8位总线收发器74ls623 8位总线收发器74ls640 反相总线收发器(三态输出)74ls641 同相8总线收发器,集电极开路74ls642 同相8总线收发器,集电极开路74ls643 8位三态总线发送接收器74ls644 真值反相8总线收发器,集电极开路74ls645 三态同相8总线收发器74ls646 八位总线收发器,寄存器74ls647 八位总线收发器,寄存器74ls648 八位总线收发器,寄存器74ls649 八位总线收发器,寄存器74ls651 三态反相8总线收发器74ls652 三态反相8总线收发器74ls653 反相8总线收发器,集电极开路74ls654 同相8总线收发器,集电极开路74ls668 4位同步加/减十进制计数器74ls669 带先行进位的4位同步二进制可逆计数器74ls670 4*4寄存器堆(三态)74ls671 带输出寄存的四位并入并出移位寄存器74ls672 带输出寄存的四位并入并出移位寄存器74ls673 16位并行输出存储器,16位串入串出移位寄存器74ls674 16位并行输入串行输出移位寄存器74ls681 4位并行二进制累加器74ls682 8位数值比较器(图腾柱输出)74ls683 8位数值比较器(集电极开路)74ls684 8位数值比较器(图腾柱输出)74ls685 8位数值比较器(集电极开路)74ls686 8位数值比较器(图腾柱输出)74ls687 8位数值比较器(集电极开路)74ls688 8位数字比较器(oc输出)74ls689 8位数字比较器74ls690 同步十进制计数器/寄存器(带数选,三态输出,直接清除)74ls691 计数器/寄存器(带多转换,三态输出)74ls692 同步十进制计数器(带预置输入,同步清除)74ls693 计数器/寄存器(带多转换,三态输出)74ls696 同步加/减十进制计数器/寄存器(带数选,三态输出,直接清除) 74ls697 计数器/寄存器(带多转换,三态输出)74ls698 计数器/寄存器(带多转换,三态输出)74ls699 计数器/寄存器(带多转换,三态输出)74ls716 可编程模n十进制计数器74ls718 可编程模n十进制计数器。

集成电路大全

四2输入异或非门
SN74LS259
8位可寻址锁存器
SN74LS275
七位树型乘法器
SN74LS261
2x4位二进制乘发器
SN74LS279
四R－S触发器
SN74LS273
八进制D型触发器
SN74LS283
4位二进制全加器
SN74LS276
四J－K触发器
SN74LS293
4位二进制计数器
SN74LS280
四3态总线缓冲器
SN74LS133
13输入与非门
SN74LS132
二输入与非触发器
SN74LS137
地址锁存3－8线译码器
SN74LS136
四异或门
SN74LS139
双2－4线译码－转换器
SN74LS138
3－8线译码/转换器
SN74LS147
10－4线优先编码器
SN74LS145
BCD十进制译码/驱动器
双J－K负沿触发器
SN74LS112
双J－K负沿触发器
SN74LS121
单稳态多谐振荡器
SN74LS114
双J－K负沿触发器
SN74LS123
双稳态多谐振荡器
SN74LS122
单稳态多谐振荡器
SN74LS125
三态缓冲器
SN74LS124
双压控振荡器
SN74LS131
3－8线译码器
SN74LS126
四输入端与非缓冲器
SN74LS38
双2输入与非缓冲器
SN74LS40
四输入端与非缓冲器
SN74LS42
BCD－十进制译码器
SN74LS47
BCD－七段译码驱动器
SN74LS48

SN74193N中文资料

Copyright © 1988, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.PACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)5962-9558401QEA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC 5962-9558401QFA ACTIVE CFP W161TBD Call TI Level-NC-NC-NC 5962-9558401QFA ACTIVE CFP W161TBD Call TI Level-NC-NC-NC 76006012A ACTIVE LCCC FK201TBD Call TI Level-NC-NC-NC 76006012A ACTIVE LCCC FK201TBD Call TI Level-NC-NC-NC 7600601EA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC 7600601EA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC 7600601FA ACTIVE CFP W161TBD Call TI Level-NC-NC-NC 7600601FA ACTIVE CFP W161TBD Call TI Level-NC-NC-NCJM38510/01309BEA OBSOLETE CDIP J16TBD Call TI Call TIJM38510/01309BEA OBSOLETE CDIP J16TBD Call TI Call TIJM38510/31508B2A ACTIVE LCCC FK201TBD Call TI Level-NC-NC-NCJM38510/31508B2A ACTIVE LCCC FK201TBD Call TI Level-NC-NC-NCJM38510/31508BEA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NCJM38510/31508BEA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NCJM38510/31508BFA ACTIVE CFP W161TBD Call TI Level-NC-NC-NCJM38510/31508BFA ACTIVE CFP W161TBD Call TI Level-NC-NC-NCJM38510/31508SEA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NCJM38510/31508SEA ACTIVE CDIP J161TBD Call TI Level-NC-NC-NCJM38510/31508SFA ACTIVE CFP W161TBD Call TI Level-NC-NC-NCJM38510/31508SFA ACTIVE CFP W161TBD Call TI Level-NC-NC-NC SN54192J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC SN54192J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC SN54193J OBSOLETE CDIP J16TBD Call TI Call TISN54193J OBSOLETE CDIP J16TBD Call TI Call TISN54LS193J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC SN54LS193J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC SN74192N OBSOLETE PDIP N16TBD Call TI Call TISN74192N OBSOLETE PDIP N16TBD Call TI Call TISN74193N OBSOLETE PDIP N16TBD Call TI Call TISN74193N OBSOLETE PDIP N16TBD Call TI Call TISN74193N3OBSOLETE PDIP N16TBD Call TI Call TISN74193N3OBSOLETE PDIP N16TBD Call TI Call TISN74LS192D OBSOLETE SOIC D16TBD Call TI Call TISN74LS192D OBSOLETE SOIC D16TBD Call TI Call TISN74LS192N OBSOLETE PDIP N16TBD Call TI Call TISN74LS192N OBSOLETE PDIP N16TBD Call TI Call TISN74LS193D ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74LS193D ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74LS193DE4ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEAROrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)SN74LS193DE4ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74LS193DR ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74LS193DR ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74LS193DRE4ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74LS193DRE4ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LS193J OBSOLETE CDIP J16TBD Call TI Call TISN74LS193J OBSOLETE CDIP J16TBD Call TI Call TISN74LS193N ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU Level-NC-NC-NCSN74LS193N ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU Level-NC-NC-NC SN74LS193N3OBSOLETE PDIP N16TBD Call TI Call TISN74LS193N3OBSOLETE PDIP N16TBD Call TI Call TISN74LS193NE4ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU Level-NC-NC-NCSN74LS193NE4ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU Level-NC-NC-NCSN74LS193NSR ACTIVE SO NS162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74LS193NSR ACTIVE SO NS162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74LS193NSRE4ACTIVE SO NS162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74LS193NSRE4ACTIVE SO NS162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SNJ54192J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NCSNJ54192J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NCSNJ54192W ACTIVE CFP W161TBD Call TI Level-NC-NC-NCSNJ54192W ACTIVE CFP W161TBD Call TI Level-NC-NC-NCSNJ54193J OBSOLETE CDIP J16TBD Call TI Call TISNJ54193J OBSOLETE CDIP J16TBD Call TI Call TISNJ54193W OBSOLETE CFP W16TBD Call TI Call TISNJ54193W OBSOLETE CFP W16TBD Call TI Call TISNJ54LS193FK ACTIVE LCCC FK201TBD Call TI Level-NC-NC-NC SNJ54LS193FK ACTIVE LCCC FK201TBD Call TI Level-NC-NC-NC SNJ54LS193J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC SNJ54LS193J ACTIVE CDIP J161TBD Call TI Level-NC-NC-NC SNJ54LS193W ACTIVE CFP W161TBD Call TI Level-NC-NC-NC SNJ54LS193W ACTIVE CFP W161TBD Call TI Level-NC-NC-NC (1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part ina new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan-The planned eco-friendly classification:Pb-Free(RoHS)or Green(RoHS&no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free(RoHS):TI's terms"Lead-Free"or"Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all6substances,including the requirement that lead not exceed0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Green(RoHS&no Sb/Br):TI defines"Green"to mean Pb-Free(RoHS compatible),and free of Bromine(Br)and Antimony(Sb)based flame retardants(Br or Sb do not exceed0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of 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SN74LS123中文资料

RETRIGGERABLE MONOSTABLE MULTIVIBRATORSThese dc triggered multivibrators feature pulse width control by three meth-ods. The basic pulse width is programmed by selection of external resistance and capacitance values. The LS122 has an internal timing resistor that allows the circuits to be used with only an external capacitor. Once triggered, the ba-sic pulse width may be extended by retriggering the gated low-level-active (A)or high-level-active (B) inputs, or be reduced by use of the overriding clear.•Overriding Clear Terminates Output Pulse•Compensated for V CC and T emperature Variations•DC Triggered from Active-High or Active-Low Gated Logic Inputs •Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle •Internal Timing Resistors on LS122SN54/74LS122 (TOP VIEW)(SEE NOTES 1 THRU 4)SN54/74LS123 (TOP VIEW)(SEE NOTES 1 THRU 4)NOTES:1.An external timing capacitor may be connected between C ext and R ext /C ext (positive).2.To use the internal timing resistor of the LS122, connect R int to V CC .3.For improved pulse width accuracy connect an external resistor between R ext /C ext and V CC with R int open-circuited.4.To obtain variable pulse widths, connect an external variable resistance between R int /C ext and V CC .R ext/CR ext/C ext 11ĂRext/2CLRC extNC Ċ NO INTERNAL CONNECTION.。

89-译码器电工电子技术

一片139种含两个2-4译码器
利用２线——４线译码器可以分时将采样数据送入计算机总线
三态门
EA
三态门
EB
三态门
EC
三态门
ED
A
B
C
D
Y0 Y1Y2
Y3
2-4线译
A0
码器
A1
S
工作原理：（以A0A1=00为例）
总线
数据
脱离总线
三态门
EA
三态门
EB
三态门
EC
三态门
ED
A
B
全为C1
D
Y0 Y1Y2
当S1=1，S2=0，S3=0时，译码器处于工作状态；选中
否则，S=0，所有输出均锁定在高电平；
未选中
译码器的扩展用两片74LS138组成一个4-16线译码器，将输入的4位二进制代码译成十六个独立的低电平信号。
Y15Y14Y13Y12Y11Y10 Y9 Y8
Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
译码器
译码
编码的逆过程，即将某个二进制代码翻译成电路的某种状态。
二进制译码器
将输入的一组n位二进制码译成2n种电路状态。
译码器的输入：译码器的输出：
n位二进制代码 2n个高低电平信号
2-4线译码器74LS139的内部线路
1 A1 1
1
A0 1
输入
1
&
Y3
&
Y2 输出
&
Y1
&
Y0
S
控制端
74LS139的功能表
注意：输出低电平有效
….
当A2A1A0=111时，Y7=0，其它为1

74LS139及74LS138的应用

高位片 (74LS1 51) E A2 A1 A0 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D1 0D1 1D1 2D1 3D1 4D1 5 1
A3 A2 A1 A0
数据选择器位扩展的连接图
•
3. 利用数据选择器，当使能端有效时，可将地址输入、数据输入代替逻辑函数中的变量实现逻辑函数的功能。例：试用八选一数据选择器74LS151产生逻辑函数
74LS151 （a）符号图; (b) 管脚图
7 11 10 9 4 3 2 1 15 14 13 12 E W A0 A1 A2 D 0 74LS151 D 1 D 2 W D 3 D 4 D 5 D 6 D 7 (a) 5 1 16
16
D 3 D 2 D 1 D 0 W W E G N D
V CC
Y ( A B D A BD A B D ABD ) E 0 1 2 3
•
A1
A0
E
1
1
1 & ≥1 E A1 A0 D0
D0
D1
Y
四选一 Y
D2
D1
D2 D3
D3 (a ) (b )
(a) 逻辑图; (b) 符号图
四选一数据选择器的功能表
E
1. 集成数据选择器
74LS151是一种典型的集成数据选择器。74LS151有三个地址端A2A1A0。可选择D0～D7八个数据，具有两个互补输出端W 。 W和ຫໍສະໝຸດ Y9Y8 Y7 Y6
Y
5
Y 4 Y 3 Y2 Y1 Y 0
• 由功能表知，Y0输出为Y0= A ，当 A3A2A1A0=0000 3A 2A 1A 0 • 时，输出Y0=0。它对应的十进制数为0。其余输出依次类推。