74系列集成电路

1、74HC/LS/HCT/F系列芯片的区别1、 LS是低功耗肖特基，HC是高速COMS。LS的速度比HC略快。HCT输入输出与LS兼容，但是功耗低；F是高速肖特基电路；2、 LS是TTL电平，HC是COMS电平。3、 LS输入开路为高电平，HC输入不允许开路， hc 一般都要求有上下拉电阻来确定输入端无效时的电平。LS 却没有这个要求4、 LS输出下拉强上拉弱，HC上拉下拉相同。5、 工作电压不同，LS只能用5V，而HC一般为2V到6V；6、电平不同。LS是TTL电平，其低电平和高电平分别为0.8和V2.4，而CMOS在工作电压为5V时分别为0.3V和3.6V，所以CMOS可以驱动TTL，但反过

2、来是不行的7、 驱动能力不同，LS一般高电平的驱动能力为5mA，低电平为20mA；而CMOS的高低电平均为5mA；8、 CMOS器件抗静电能力差，易发生栓锁问题，所以CMOS的输入脚不能直接接电源。74系列集成电路大致可分为6大类：. 74（标准型）；.74LS（低功耗肖特基）；.74S（肖特基）；.74ALS（先进低功耗肖特基）；.74AS（先进肖特基）；.74F（高速）。近年来还出现了高速CMOS电路的74系列，该系列可分为3大类：. HC为COMS工作电平；. HCT为TTL工作电平，可与74LS系列互换使用；.HCU适用于无缓冲级的CMOS电路。这9种74系列产品，只要后边的标号相同，

3、其逻辑功能和管脚排列就相同。根据不同的条件和要求可选择不同类型的74系列产品，比如电路的供电电压为3V就应选择74HC系列的产品系列 电平 典型传输延迟ns 最大驱动电流(-Ioh/Lol)mAAHC CMOS 8.5 -8/8AHCT COMS/TTL 8.5 -8/8HC COMS 25 -8/8HCT COMS/TTL 25 -8/8ACT COMS/TTL 10 -24/24F TTL 6.5 -15/64ALS TTL 10 -15/64LS TTL 18 -15/24LVCACSLC注：同型号的74系列、74HC系列、74LS系列芯片，逻辑功能上是一样的。74LSxx的使用说明如果

4、找不到的话，可参阅74xx或74HCxx的使用说明。有些资料里包含了几种芯片，如74HC161资料里包含了74HC160、74HC161、74HC162、74HC163四种芯片的资料。找不到某种芯片的资料时，可试着查看一下临近型号的芯片资料。7400 QUAD 2-INPUT NAND GATES 与非门7401 QUAD 2-INPUT NAND GATES OC与非门7402 QUAD 2-INPUT NOR GATES或非门7403 QUAD 2-INPUT NAND GATES 与非门7404 HEX INVERTING GATES 反向器7406 HEX INVERTING GATE

5、S HV高输出反向器7408 QUAD 2-INPUT AND GATE 与门7409 QUAD 2-INPUT AND GATES OC 与门7410 TRIPLE 3-INPUT NAND GATES 与非门7411 TRIPLE 3-INPUT AND GATES与门74121 ONE-SHOT WITH CLEAR单稳态74132 SCHMITT TRIGGER NAND GATES 触发器与非门7414 SCHMITT TRIGGER INVERTERS 触发器反向器74153 4-LINE TO 1 LINE SELECTOR四选一74155 2-LINE TO 4-LINE DE

6、CODER 译码器74180 PARITY GENERATOR/CHECKER 奇偶发生检验74191 4-BIT BINARY COUNTER UP/DOWN 计数器7420 DUAL 4-INPUT NAND GATES 双四输入与非门7426 QUAD 2-INPUT NAND GATES 与非门7427 TRIPLE 3-INPUT NOR GATES三输入或非门7430 8-INPUT NAND GATES八输入端与非门7432 QUAD 2-INPUT OR GATES 二输入或门7438 2-INPUT NAND GATE BUFFER与非门缓冲器7445 BCD-DECIMAL

7、 DECODER/DRIVER BCD译码驱动器7474 D-TYPE FLIP-FLOP D型触发器7475 QUAD LATCHES双锁存器7476 J-K FLIP-FLOPJ-K触发器7485 4-BIT MAGNITUDE COMPARATOR四位比较器7486 2-INPUT EXCLUSIVE OR GATES双端异或门74HC00 QUAD 2-INPUT NAND GATES 双输入与非门74HC02 QUAD 2-INPUT NOR GATES双输入或非门74HC03 2-INPUT OPEN-DRAIN NAND GATES 与非门74HC04 HEX INVERTERS

8、 六路反向器74HC05 HEX INVERTERS OPEN DRAIN六路反向器74HC08 2-INPUT AND GATES 双输入与门74HC107 J-K FLIP-FLOP WITH CLEARJ-K触发器74HC109A J-K FLIP-FLOP W/PRESET J-K触发器74HC11 TRIPLE 3-INPUT AND GATES三输入与门74HC112 DUAL J-K FLIP-FLOP双J-K触发器74HC113 DUAL J-K FLIP-FLOP PRESET双JK触发器74HC123A RETRIGGERABLE MONOSTAB可重触发单稳74HC125

9、 TRI-STATE QUAD BUFFERS 四个三态门74HC126 TRI-STATE QUAD BUFFERS 六三态门74HC132 2-INPUT TRIGGER NAND 施密特触发与非门74HC133 13-INPUT NAND GATES十三输入与非门74HC137 3-TO-8 DECODERS W/LATCHES 3-8线译码器74HC138 3-8 LINE DECODER 3线至8线译码器74HC139 2-4 LINE DECODER 2线至4线译码器74HC14 TRIGGERED HEX INVERTER六触发反向器74HC147 10-4 LINE PRIOR

10、ITY ENCODER 10-4编码器74HC148 8-3 LINE PRIORITY ENCODER 8-3编码器74HC149 8-8 LINE PRIORITY ENCODER 8-8编码器74HC151 8-CHANNEL DIGITAL MUX 8通道多路器74HC153 DUAL 4-INPUT MUX 双四输入多路器74HC154 4-16 LINE DECODER 4线至16线译码器74HC155 2-4 LINE DECODER 2线至4线译码器74HC157 QUAD 2-INPUT MUX 四个双端多路器74HC161 BINARY COUNTER 二进制计数器74HC

11、163 DECADE COUNTERS十进制计数器74HC164 SERIAL-PARALLEL SHIFT REG串入并出74HC165 PARALLEL-SERIAL SHIFT REG并入串出74HC166 SERIAL-PARALLEL SHIFT REG串入并出74HC173 TRI-STATE D FLIP-FLOP 三态D触发器74HC174 HEX D FLIP-FLOP W/CLEAR 六D触发器74HC175 HEX D FLIP-FLOP W/CLEAR 六D触发器74HC181 ARITHMETIC LOGIC UNIT算术逻辑单元74HC182 LOOK AHEAD

12、CARRYGENERATR 进位发生器74HC190 BINARY UP/DN COUNTER 二进制加减计数器74HC191 DECADE UP/DN COUNTER 十进制加减计数器74HC192 DECADE UP/DN COUNTER 十进制加减计数器74HC193 BINARY UP/DN COUNTER 二进制加减计数器74HC194 4BIT BI-DIR SHIFT 4位双向移位寄存器74HC195 4BIT PARALLEL SHIFT 4位并行移位寄存器74HC20 QUAD 4-INPUT NAND GATE四个四入与非门74HC221A NON-RETRIG MONOS

13、TAB 不可重触发单稳74HC237 3-8 LINE DECODER 地址锁3线至8线译码器74HC242/243 TRI-STAT TRANSCEIVER 三态收发器74HC244 OCTAL 3-STATE BUFFER 八个三态缓冲门74HC245 OCTAL 3-STATE TRANSCEIVER三态收发器74HC251 8-CH 3-STATE MUX 8路3态多路器74HC253 DUAL 4-CH 3-STATE MUX4路3态多路器74HC257 QUAD 2-CH 3-STATE MUX4路3态多路器74HC258 2-CH 3-STATE MUX 2路3态多路器74HC2

14、59 3-8 LINE DECODER8位地址锁存译码器74HC266A 2-INPUT EXCLUSIVE NOR GATE异或非74HC27 TRIPLE 3-INPUT NOR GATE三个3输入或非门74HC273 OCTAL D FLIP-FLOP CLEAR8路D触发器74HC280 9BIT ODD/EVEN GENERATOR奇偶发生器74HC283 4BIT BINARY ADDER CARRY四位加法器74HC299 3-STATE UNIVERSAL SHIFT三态移位寄存74HC30 8-INPUT NAND GATE8输入端与非门74HC32 QUAD 2-INPUT

15、 OR GATE四个双端或门74HC34 NON-INVERTER非反向器74HC354 8-CH 3-STATE MUX 8路3态多路器74HC356 8-CH 3-STATE MUX 8路3态多路器74HC365 HEX 3-STATE BUFFER 六个三态缓冲门74HC366 3-STATE BUFFER INVERTER缓冲反向器74HC367 3-STATE BUFFER INVERTER缓冲反向器74HC368 3-STATE BUFFER INVERTER缓冲反向器74HC373 3-STATE OCTAL D LATCHES 三态D型锁存器74HC374 3-STATE OC

16、TAL D FLIPFLOP三态D触发器74HC3934-BIT BINARY COUNTER 4位二进制计数器74HC4016 QUAD ANALOG SWITCH四路模拟量开关74HC4020 14-Stage Binary Counter 14输出计数器74HC4017 Decade Counter/Divider with 10 Decoded Outputs十进制计数器带10个译码输出端74HC4040 12 Stage Binary Counter 12出计数器74HC4046 PHASE LOCK LOOP 相位监测输出器74HC4049 LEVEL DOWN CONVERTER

17、电平变低器74HC4050 LEVEL DOWN CONVERTER电平变低器74HC4051 8-CH ANALOG MUX8通道多路器74HC4052 4-CH ANALOG MUX4通道多路器74HC4053 2-CH ANALOG MUX2通道多路器74HC4060 14-STAGE BINARY COUNTER14阶BIN计数74HC4066 QUAD ANALOG MUX 四通道多路器74HC4075 TRIPLE 3-INPUT OR GATE 3输入或门74HC42 BCD TO DECIMAL BCD转十进制译码器74HC423A RETRIGGERABLE MONOSTAB

18、可重触发单稳74HC4511 BCD-7 SEG DRIVER/DECODER 7段译码器74HC4514 4-16 LINE DECODER4至16线译码器74HC4538A RETRIGGERAB MONOSTAB 可重触发单稳74HC4543 LCD BCD-7 SEG LCD用的BCD-7段译码驱动74HC51 AND OR GATE INVERTER与或非门74HC521 8BIT MAGNITUDE COMPARATOR判决定路74HC533 3-STATE D LATCH 三态D锁存器74HC534 3-STATE D FLIP-FLOP 三态D型触发器74HC540 3-STA

19、TE BUFFER 三态缓冲器74HC541 3-STATE BUFFER INVERTER三态缓冲反向器74HC58 DUAL AND OR GATE与或门74HC589 3STATE 8BIT SHIFT 8位移位寄存三态输出74HC594 8BIT SHIFT REG8位移位寄存器74HC595 8BIT SHIFT REG8位移位寄存器出锁存74HC597 8BIT SHIFT REG8位移位寄存器入锁存74HC620 3-STATE TRANSCEIVER 反向3态收发器74HC623 3-STATE TRANSCEIVER八路三态收发器74HC640 3-STATE TRANSCE

20、IVER 反向3态收发器74HC643 3-STATE TRANSCEIVER八路三态收发器74HC646 NON-INVERT BUS TRANSCEIVER 总线收发器74HC648 INVERT BUS TRANCIVER 反向总线收发器74HC688 8BIT MAGNITUDE COMPARATOR 8位判决电路74HC7266 2-INPUT EXCLUSIVE NOR GATE异或非门74HC73 DUAL J-K FLIP-FLOP W/CLEAR双JK触发器74HC74A PRESET/CLEAR D FLIP-FLOP双D触发器74HC75 4BIT BISTABLE LA

21、TCH4位双稳锁存器74HC76 PRESET/CLEAR JK FLIP-FLOP 双JK触发器74HC85 4BIT MAGNITUDE COMPARATOR4位判决电路74HC86 2INPUT EXCLUSIVE OR GATE 2输入异或门74HC942 BAUD MODEM 300BPS低速调制解调器74HC943 300 BAUD MODEM 300BPS低速调制解调器74LS00 QUAD 2-INPUT NAND GATES 与非门74LS02 QUAD 2-INPUT NOR GATES或非门74LS03 QUAD 2-INPUT NAND GATES 与非门74LS04

22、HEX INVERTING GATES 反向器74LS05 HEX INVERTERS OPEN DRAIN六路反向器74LS08 QUAD 2-INPUT AND GATE 与门74LS09 QUAD 2-INPUT AND GATES OC 与门74LS10 TRIPLE 3-INPUT NAND GATES 与非门74LS109 QUAD 2-INPUT AND GATES OC 与门74LS11 TRIPLE 3-INPUT AND GATES与门74LS112 DUAL J-K FLIP-FLOP双J-K触发器74LS113 DUAL J-K FLIP-FLOP PRESET双JK触

23、发器74LS114 NEGATIVE J-K FLIP-FLOP负沿J-K触发器74LS122 Retriggerable Monostab 可重触发单稳74LS123 Retriggerable Monostable 可重触发单稳74LS125 TRI-STATE QUAD BUFFERS 四个三态门74LS13 QUAL 4-in NAND TRIGGER 4输入与非触发器74LS160 BCD DECADE 4BIT BIN COUNTERS 计数器74LS136 QUADRUPLE 2-INPUT XOR GATE 异或门74LS138 3-8 LINE DECODER 3线至8线译码

24、器74LS139 2-4 LINE DECODER 2线至4线译码器74LS14 TRIGGERED HEX INVERTER六触发反向器74HC147 10-4 LINE PRIORITY ENCODER 10-4编码器74HC148 8-3 LINE PRIORITY ENCODER 8-3编码器74HC149 8-8 LINE PRIORITY ENCODER 8-8编码器74LS151 8-CHANNEL DIGITAL MUX 8通道多路器74LS153 DUAL 4-INPUT MUX 双四输入多路器74LS155 2-4 LINE DECODER 2线至4线译码器74LS156

25、2-4 LINE DECODER/DEMUX2-4译码器74LS157 QUAD 2-INPUT MUX 四个双端多路器74LS158 2-1 LINE MUX2-1线多路器74LS160A BINARY COUNTER二进制计数器74LS161A BINARY COUNTER二进制计数器74LS162A BINARY COUNTER二进制计数器74LS163A DECADE COUNTERS 十进制计数器74LS164 SERIAL-PARALLEL SHIFT REG串入并出74LS168 BI-DIRECT BCD TO DECADE双向计数器74LS169 4BIT UP/DN BIN

26、 COUNTER 四位加减计数器74LS173 TRI-STATE D FLIP-FLOP 三态D触发器74LS174 HEX D FLIP-FLOP W/CLEAR 六D触发器74LS175 HEX D FLIP-FLOP W/CLEAR 六D触发器74LS190 BINARY UP/DN COUNTER 二进制加减计数器74LS191 DECADE UP/DN COUNTER 十进制加减计数器74LS192 DECADE UP/DN COUNTER 十进制加减计数器74LS193 BINARY UP/DN COUNTER 二进制加减计数器74LS194A 4BIT BI-DIR SHIFT

27、4位双向移位寄存器74LS195A 4BIT PARALLEL SHIFT4位并行移位寄存器74LS20 QUAD 4-INPUT NAND GATE四个四入与非门74LS21 4-INPUT AND GATE四输入端与门74LS240 OCTAL 3-STATE BUFFER 八个三态缓冲门74LS244 OCTAL 3-STATE BUFFER 八个三态缓冲门74LS245 OCTAL 3-STATE TRANSCEIVER三态收发器74LS253 DUAL 4-CH 3-STATE MUX4路3态多路器74LS256 4BIT ADDRESS LATCH 四位可锁存锁存器74LS257

28、QUAD 2-CH 3-STATE MUX4路3态多路器74LS258 2-CH 3-STATE MUX 2路3态多路器74LS27 TRIPLE 3-INPUT NOR GATES三输入或非门74LS279 QUAD R-S LATCHES 四个RS非锁存器74LS28 QUAD 2-INPUT NOR BUFFER 四双端或非缓冲74LS283 4BIT BINARY ADDER CARRY四位加法器74LS30 8-INPUT NAND GATES八输入端与非门74LS32 QUAD 2-INPUT OR GATES 二输入或门74LS352 4-1 LINE SELECTOR/MUX 4-1线选择多路器74LS365 HEX 3-STATE BUFFER 六个三态缓冲门74LS367 3-STATE BUFFER INVERTER缓冲反向器74LS368A 3-STATE