SN74LV393ADGVR,SN74LV393ANSR,SN74LV393APW,SN74LV393ADGVRE4,SN74LV393ADRE4, 规格书,Datasheet 资料

PACKAGING INFORMATIONOrderableDevice Status (1)Package Type Package DrawingPins Package Qty Eco Plan (2)Lead/Ball Finish MSL Peak Temp (3)SN74LV4051AD ACTIVE SOIC D 1640Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADBR ACTIVE SSOP DB 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADBRE4ACTIVE SSOP DB 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADBRG4ACTIVE SSOP DB 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADE4ACTIVE SOIC D 1640Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADG4ACTIVE SOIC D 1640Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADGVR ACTIVE TVSOP DGV 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADGVRE4ACTIVE TVSOP DGV 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADGVRG4ACTIVE TVSOP DGV 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADR ACTIVE SOIC D 162500Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADRE4ACTIVE SOIC D 162500Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ADRG4ACTIVE SOIC D 162500Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051AN ACTIVE PDIP N 1625Pb-Free (RoHS)CU NIPDAU N /A for Pkg Type SN74LV4051ANE4ACTIVE PDIP N 1625Pb-Free (RoHS)CU NIPDAU N /A for Pkg Type SN74LV4051ANSR ACTIVE SO NS 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ANSRE4ACTIVE SO NS 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ANSRG4ACTIVE SO NS 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APW ACTIVE TSSOP PW 1690Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWE4ACTIVE TSSOP PW 1690Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWG4ACTIVE TSSOP PW 1690Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWR ACTIVE TSSOP PW 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWRE4ACTIVE TSSOP PW 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWRG4ACTIVE TSSOP PW 162000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWT ACTIVE TSSOP PW 16250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051APWTE4ACTIVETSSOPPW16250Green (RoHS &no Sb/Br)CU NIPDAULevel-1-260C-UNLIMPACKAGE OPTION ADDENDUM4-Jun-2007Addendum-Page 1Orderable Device Status (1)Package Type Package Drawing Pins Package Qty Eco Plan (2)Lead/Ball Finish MSL Peak Temp (3)SN74LV4051APWTG4ACTIVE TSSOP PW 16250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LV4051ARGYR ACTIVE QFN RGY 161000Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LV4051ARGYRG4ACTIVEQFNRGY161000Green (RoHS &no Sb/Br)CU NIPDAULevel-2-260C-1YEAR(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 -The planned eco-friendly classification:Pb-Free (RoHS),Pb-Free (RoHS Exempt),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 all 6substances,including the requirement that lead not exceed 0.1%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.Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1)lead-based flip-chip solder bumps used between the die and package,or 2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free (RoHS compatible)as defined above.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 exceed 0.1%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 the date that it is provided.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 areunderway 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.PACKAGE OPTION ADDENDUM4-Jun-2007TAPE AND REEL BOXINFORMATIONDevicePackage Pins SiteReel Diameter (mm)Reel Width (mm)A0(mm)B0(mm)K0(mm)P1(mm)W (mm)Pin1Quadrant SN74LV4051ADBR DB 16SITE 41330168.2 6.6 2.51216Q1SN74LV4051ADGVR DGV 16SITE 4133012 6.8 4.0 1.6816Q1SN74LV4051ADR D 16SITE 2733016 6.510.3 2.1816Q1SN74LV4051ANSR NS 16SITE 41330168.210.5 2.51216Q1SN74LV4051APWR PW 16SITE 41330127.0 5.6 1.6812Q1SN74LV4051ARGYRRGY16SITE 41180123.84.31.5812Q14-Oct-2007DevicePackage Pins Site Length (mm)Width (mm)Height (mm)SN74LV4051ADBR DB 16SITE 41346.0346.033.0SN74LV4051ADGVR DGV 16SITE 41346.0346.029.0SN74LV4051ADR D 16SITE 27342.9336.628.58SN74LV4051ANSR NS 16SITE 41346.0346.033.0SN74LV4051APWR PW 16SITE 41346.0346.029.0SN74LV4051ARGYRRGY16SITE 41190.0212.731.754-Oct-2007元器件交易网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 andcomplete.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’sstandard warranty.Testing and other quality control techniques are used to the extent TI deems necessary to support thiswarranty.Except where mandated by 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74hc393工作原理小伙伴！今天咱们来唠唠74HC393这个超有趣的小芯片呀。

74HC393呢，它可是个计数器芯片哦。

想象一下，它就像是一个特别聪明的小管家，专门负责数东西呢。

这个小管家有两个计数器在里面，就像它有两只手，每只手都能单独干活。

它的输入和输出可就像是小管家的耳朵和嘴巴啦。

它有一些输入引脚，这些引脚就像是小管家的耳朵，用来听外面的信号。

比如说，有个时钟输入引脚，这个引脚就像是一个节拍器，每来一个时钟信号的跳动，小管家就开始干活啦，开始数数呢。

那它怎么数的呢？这就很神奇啦。

它是按照二进制的方式来数的哦。

你要是了解二进制就知道，就像只有0和1这两个数字在那蹦跶。

比如说，最开始它可能数的是0000，然后下一个时钟信号来了，就变成0001啦，就这么一点点地往上加。

就好像小管家在那一步一步地往上爬楼梯，每一步都按照二进制的规则来。

再说说它的输出引脚吧，这就是小管家的嘴巴啦。

它会把数出来的结果通过这些输出引脚告诉外面的世界。

比如说，你要是接了一些LED灯到输出引脚，根据它数出来的不同结果，LED灯就会有不同的亮灭组合呢。

这就像是小管家在给你展示它数到哪里啦，超级有趣吧。

而且哦，这个74HC393还很灵活呢。

它可以做很多不同的计数工作。

你可以让它从0开始一直数到某个值，然后又重新开始。

或者你也可以设置它，让它只数奇数或者只数偶数，就像小管家有自己的小脾气，可以按照你想要的方式来数数。

在电路里，它就像是一个小小的数学天才。

比如说在一些简单的数字电路实验里，你想知道某个信号来了多少次，把74HC393接上，它就能准确地告诉你。

它不需要很复杂的程序或者算法，就靠着自己的小本事，在那兢兢业业地数数。

它的工作电压范围也比较友好呢。

就像一个不挑食的小助手，在一定的电压范围内都能正常工作。

这就方便我们在不同的电路环境里使用它啦。

不过呢，使用它的时候也得小心一点哦。

就像对待一个小宝贝一样。

比如说，要注意它的输入信号不能太乱，不然小管家可能就会数错啦。

sn74lv165a原理SN74LV165A是一种串行输入并行输出的移位寄存器，它可以连接到其他SN74LV165A芯片来扩展输入线。

该芯片可以在微控制器和其他数字电路中起到重要作用。

在此文章中，我们将深入探讨SN74LV165A芯片的工作原理以及其在电路设计中的应用。

SN74LV165A芯片的工作原理SN74LV165A芯片是一种8位移位寄存器，它可以从串行输入线读取数据，并将数据存储在并行输出线中。

该芯片有一个时钟输入端CLK和一个异步清零输入端CLR。

在时钟输入端输入正脉冲时，SN74LV165A芯片将数据从串行输入线读取，并将其存储在内部寄存器中。

当输入完8位数据后，数据将被并行传输到输出线。

SN74LV165A芯片还有一个串行输出端QH'，可以将芯片中的数据通过串行输出线传输出去。

此外，该芯片还具有一个使能输入端，当该端输入低电平时，芯片处于失能状态，此时芯片将不会从串行输入线读取数据，也不会将数据传输到输出线。

SN74LV165A芯片在电路设计中的应用SN74LV165A芯片具有广泛的应用，特别是在数字电路中。

在以下场景中，SN74LV165A芯片被广泛使用：1.扩展输入线：SN74LV165A芯片可以通过串联连接来扩展输入线。

在需要大量输入的应用场景中，SN74LV165A芯片可以通过连接多个芯片来扩展输入线。

2. 计数器：SN74LV165A芯片可以用作计数器的输入接口。

当计数器的计数值达到8时，计数器将停止计数。

在此之后，计数器的输出线可以将计数值传输给其他部件。

3. 时序控制器：在时序控制器中，SN74LV165A芯片可以用作状态机的输入接口。

在时钟输入端输入正脉冲时，状态机将根据当前状态执行不同的操作。

总结SN74LV165A芯片是一种广泛使用的移位寄存器，它可以将串行输入数据转换为并行输出数据。

该芯片可以用于扩展输入线、计数器和时序控制器等应用中。

在电路设计中，SN74LV165A芯片可以提高电路的效率和可靠性，是一种非常有用的电子元件。

SNLS系列芯片名称74系列资料型号器件名称SN74LS00 四2输入端与非门SN74LS01 四2输入端与非门(OC)SN74LS02 四2输入端或非门SN74LS03 四2输入端与非门(OC)SN74LS04 六反相器SN74LS05 六反相器(OC)SN74LS06 六高压输出反相器(OC,30V)SN74LS07 六高压输出缓冲,驱动器(OC,30V)SN74LS08 四2输入端与门SN74LS09 四2输入端与门(OC)SN74LS10 三3输入端与非门SN74LS11 三3输入端与门SN74LS12 三3输入端与非门(OC)SN74LS13 双4输入端与非门SN74LS14 六反相器SN74LS15 三3输入端与门(OC)SN74LS16 六高压输出反相器(OC)SN74LS17 六高压输出缓冲,驱动器(OC)SN74LS19A HEX SCHMITT-TRIGGER INVERTERSSN74LS20 双4输入端与非门SN74LS21 双4输入端与门SN74LS22 双4输入端与非门(OC)SN74LS24A 施密特与非门/变换器SN74LS26 四2输入端高压输出与非缓冲器SN74LS27 三3输入端或非门SN74LS28 四2输入端或非缓冲器型号器件名称SN74LS30 8输入端与非门SN74LS31 HEX GENERATING DELAY LINESSN74LS32 四2输入端或门SN74LS33 QUAD 2-INPUT POSITIVE-NOR BUFFERS SN74LS37 QUAD 2-INPUT POSITIVE-NANDBUFFERSSN74LS38 QUAD 2-INPUT POSITIVE-NANDBUFFERSSN74LS40 双4输入端与非缓冲器SN74LS424线-10线译码器 SN74LS47BCD 七段译码,驱动器 SN74LS48BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS SN74LS49BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS SN74LS512路3-3输入,2路2-2输入与或非门 SN74LS544路2-3-3-2输入与或非门 SN74LS552路4-4输入与或非门 SN74LS56FREQUENCY DIVIDERS SN74LS57FREQUENCY DIVIDERS SN74LS68DUAL 4-BIT DECADE OR BINARY COUNTERS SN74LS69DUAL 4-BIT DECADE OR BINARY COUNTERS SN74LS73ADUAL J-K FLIP-FLOPS WITH CLEAR SN74LS74A双上升沿D 型触发器 SN74LS75QUAD BISTABLE LATCHES SN74LS76A单D 型触发器 SN74LS78A双D 型触发器 型号器件名称 SN74LS854位数值比较器 SN74LS86A四二进制原码/反码,0/1单元 SN74LS90DECADE COUNTER SN74LS918位移位寄存器 SN74LS92DIVIDE-BY-TWELVE DECADECOUNTER SN74LS934-BIT BINARY COUNTERS SN74LS95B4位移位寄存器 SN74LS96四2输入端与非门 SN74LS107A双 J-K 触发器 SN74LS109A4位移位寄存器 SN74LS112A双下降沿J-K 触发器 SN74LS114A双 J-K 触发器 SN74LS122RETRIGGERABLE MONOSTABLEMULTIVIBRATOR SN74LS123可重触发双稳态触发器 SN74LS125A四总线缓冲器 SN74LS126A四总线缓冲器 SN74LS132四2输入端与非门 SN74LS136QUAD 2-INPU T EXCLUSIVE-OR GATES 地址锁存,3线-8线译码器 3线-8线译码器 双2线-4线译码器SN74LS137SN74LS138SN74LS139ABCD-TO-DECIMAL DECODERS/DRIVERS 10线-4线优先编码器 8线-3线优先编码器 8选1数据选择器 双4选1数据选择器 双2线-4线译码器 双2线-4线译码器OC 四2选1数据选择器 四2选1数据选择器（反码输出） 十进制同步计数器4位二进制同步计数器 十进制同步计数器 4位二进制同步计数器 8位移位寄存器 8位移位寄存器 8位移位寄存器 4位二进制同步加/减计数器 4-BY-4 REGISTER FILES QUADRUPLE D-TYPE FLIP-FLOPS WITH CLEAR 4位D 型寄存器 六上升沿D 型发器 四上升沿D 型触发器 4位算述逻辑单元/函数生器 DUAL CARRY-SAFE FULL ADDERS 十进制加/减计数器 4位二进制加/减计数器 十进制加/减计数器（双时钟） 4位二进制加/减计数器（双时钟） 4位双向移位寄存器 4位移位寄存器 50/30/100-MHZ 可预置二-五-十进制计数器二-八-十六进制计数器 双单稳态触器 16 X 4 同步先入，先出存储器 16X4 SYNCHRONOUS FIFO MEMORY 16 X 4同步先入，先出存储器（OC ） 八反相缓冲/线驱动/线接收器 八缓冲/线驱动/线接收器 四总线收发器 四总线收发器 八缓冲/线驱动/线接收器 八双向总线发送/接发器4线-7段译码/高压输出驱动器SN74LS248 4线-7段译码/驱动器 SN74LS145SN74LS147SN74LS148SN74LS151SN74LS153SN74LS155ASN74LS156SN74LS157SN74LS158SN74LS160A SN74LS161ASN74LS162ASN74LS163ASN74LS164SN74LS165ASN74LS166ASN74LS169BSN74LS170SN74LS171SN74LS173ASN74LS174SN74LS175SN74LS181SN74LS183SN74LS190SN74LS191SN74LS192SN74LS193SN74LS194ASN74LS195ASN74LS196SN74LS197SN74LS221SN74LS222ASN74LS224ASN74LS227SN74LS228SN74LS240SN74LS241SN74LS242SN74LS243SN74LS244SN74LS245SN74LS247SN74LS251 8选1数据选择器SN74LS253 双4选1数据选择器SN74LS257B 四2选1数据选择器SN74LS258B 四2选1数据选择器SN74LS259B 8位可寻址锁存器SN74LS261 2 BY 4 BIT PARALLEL BINARY MULTIPLIER SN74LS266 QUAD 2-INPUT EXCLUSIVE-NOR GATESSN74LS273 八D触发器SN74LS279A QUAD /S-/R LATCHESSN74LS280 9位奇偶产生器/校验器SN74LS283 4位二进制超位全加器SN74LS290 ASYNCHRONOUS DECADE COUNTERSSN74LS292 可编程频率分配器/数字定时器SN74LS293 4-BIT 二进制计数器SN74LS294 可编程频率分配器/数字定时器SN74LS295B 4-BIT RIGHT-SHIFT LEFT-SHIFT REGISTERS SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERSSN74LS298 QUADRUPLE 2-INPUT MULTIPLEXERSSN74LS299 8位双向通用移位/存储寄存器SN74LS320 CRYSTAL-CONTROLLED OSCILLATORSSN74LS321 CRYSTAL-CONTROLLED OSCILLATORSN74LS322A 8-BIT SHIFT REGISTERS WITH SIGN EXTEND SN74LS323 UNIVERSAL SHIFT / STORAGE REGISTERSSN74LS348 8线-3线优先编码器SN74LS352 双4选1数据选择器/多路（复用）器SN74LS353 双4选1数据选择器/多路（复用）器SN74LS354 8选1数据选择器/多路（复用）器/寄存器SN74LS355 8选1数据选择器/多路（复用）器/寄存器（OC）SN74LS356 8选1数据选择器/多路（复用）器/寄存器SN74LS365A 六总线驱动器SN74LS366A 六反相总线驱动器SN74LS367A 六总线驱动器SN74LS368A 六反相总线驱动器SN74LS373 六D型锁存器SN74LS374 六上升沿D型触发器SN74LS375 QUAD BISTABLE LATCHESSN74LS377 六上升沿D型触发器SN74LS378 HEX D-TYPE FLIP-FLOPSSN74LS379 QUAD D-TYPE FLIP-FLOPS算术逻辑单元/函数发生器 算术逻辑单元/函数发生器 8 BY 1 TWO'S-COMPLEMENT MULTIPLIERS QUAD SERIAL ADDERS/SUBTRACTORS 四2输入端异或门 双十进制计数器 双4位二进制计数器 CASCADABLE SHIFT REGISTERS OCTAL STORAGE REGISTERS QUADRUPLE 2-INPUT MULTIPLEXERS 可再触发单稳态多频振荡器 双可再触发单稳态多频振荡器 QUAD TRIDIRECTIONAL BUS TRANSCEIVERS QUAD TRIDIRECTIONAL BUS TRANSCEIVERS QUAD TRIDIRECTIONAL BUS TRANSCEIVERS QUAD TRIDIRECTIONAL BUS TRANSCEIVERS BCD-TO-DECIMAL DECODERS/DRIVERS QUADRUPLE BUS TRANSCEIVERS QUADRUPLE BUS TRANSCEIVERS OCTAL BUFFERS WITH 3-STATE OUTPUTS OCTAL BUFFERS OCTAL BUFFERS OCTAL BUFFERS ASYNCHRONOUS DECADE COUNTERS 8三态缓冲器（反相） OCTAL BUFFERS AND LINE DRIVERS 8-BIT BINARY COUNTERS 8-BIT BINARY COUNTERS 8-BIT BINARY COUNTERS 8-BIT BINARY COUNTERS SERIAL-IN SHIFT REGISTERS SERIAL-IN SHIFT REGISTERS SERIAL-IN SHIFT REGISTERS SERIAL-OUT SHIFT REGISTERS SHIFT REGISTERS WITH INPUT LATCHES 8-BIT SHIFT REGISTERS MEMORY REFRESH CONTROLLERS MEMORY REFRESH CONTROLLERS MEMORY REFRESH CONTROLLERS OCTAL 2-INPUT MULTIPLEXED LATCHES OSN74LS381ASN74LS382ASN74LS384SN74LS385SN74LS386ASN74LS390SN74LS393SN74LS395A SN74LS396SN74LS399SN74LS422SN74LS423SN74LS440SN74LS441SN74LS442SN74LS444SN74LS445SN74LS446SN74LS449SN74LS465SN74LS466SN74LS467SN74LS468SN74LS490SN74LS540SN74LS541SN74LS590SN74LS591SN74LS592SN74LS593SN74LS594SN74LS595SN74LS596SN74LS597SN74LS598SN74LS599SN74LS600ASN74LS601ASN74LS603ASN74LS604SN74LS606CTAL 2-INPUT MULTIPLEXED LATCHES OCTAL 2-INPUT MULTIPLEXED LATCHES 八总线收发器 八总线收发器 八总线收发器 电压控制振荡器 双电压控制振荡器 双电压控制振荡器 DUAL VOLTAGE-CONTROLLED OSCILLATORS 电压控制振荡器 双电压控制振荡器 16位平行误差检测修正电路 OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVER/IOL=48MA 3-STATE OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS AND REGISTERS OCTAL BUS TRANSCEIVERS AND REGISTERS OCTAL BUS TRANSCEIVERS AND REGISTERS OCTAL BUS TRANSCEIVERS AND REGISTERS OCTAL BUS TRANSCEIVERS AND REGISTERS OCTAL BUS TRANSCEIVERS AND REGISTERS OCTAL BUS TRANSCEIVERS AND REGISTERS SYNCHRONOUS UP/DOWN DECADE COUNTERS 可预置同步加减二进制计数器 4-BY-4 REGISTER FILES 4位通用移位寄存器/锁存器 4位通用移位寄存器/锁存器 SERIAL-IN SHIFT REGISTERS SERIAL-OUT SHIFT REGISTERS 4-BIT PARALLEL BINARY ACCUMULATOR 8位二进制或BCD 大小比较器 8位二进制或BCD 大小比较器 8位二进制或BCD 大小比较器 8-BIT MAGNITUDE/IDENTITY COMPARATORS 8位二进制或BCD 大小比较器 八位数据等值比较器 十进制同步计数器 二进制同步计数器 4位二进制同步计数器SN74LS607 SN74LS620 SN74LS621 SN74LS623 SN74LS624 SN74LS625 SN74LS626 SN74LS627 SN74LS628 SN74LS629 SN74LS630 SN74LS638 SN74LS639 SN74LS640 SN74LS640-1 SN74LS641 SN74LS642 SN74LS644 SN74LS645 SN74LS646 SN74LS647 SN74LS648 SN74LS649 SN74LS651 SN74LS652 SN74LS653 SN74LS668 SN74LS669 SN74LS670 SN74LS671 SN74LS672 SN74LS673 SN74LS674 SN74LS681 SN74LS682 SN74LS684 SN74LS685 SN74LS686 SN74LS687 SN74LS688 SN74LS690 SN74LS691 SN74LS693SN74LS696 SN74LS697 SN74LS699 同步加/减计数器4位二进制同步加/减计数器4位二进制同步加/减计数器。