74ls系列芯片功能介绍

74、74HC、74LS系列芯片资料

系列电平典型传输延迟ns 最大驱动电流(-Ioh/Lol)mA

AHC CMOS 8.5 -8/8

AHCT COMS/TTL 8.5 -8/8

HC COMS 25 -8/8

HCT COMS/TTL 25 -8/8

ACT COMS/TTL 10 -24/24

F TTL 6.5 -15/64

ALS TTL 10 -15/64

LS TTL 18 -15/24

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 GATES 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 DECODER 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 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-FLOP J-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 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 CLEAR J-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 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 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74HC163 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 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