常用邏輯電平 逻辑电平设计 时间:2008-08-19   来源:   作者:   点击：725   字体大小:【大 中 小】 [pic][pic]1、逻辑电平简介 逻辑电平有：TTL、CMOS、LVTTL、LVCMOS、ECL、PECL、LVDS、GTL、BTL、ETL、GTLP； RS232、RS422、RS485等。 TTL：Transistor-Transistor Logic CMOS：Complementary Metal Oxide Semicondutor LVTTL：Low Voltage TTL LVCMOS：Low Voltage CMOS ECL：Emitter Coupled Logic， PECL：Pseudo/Positive Emitter Coupled Logic LVDS：Low Voltage Differential Signaling GTL：Gunning Transceiver Logic BTL： Backplane Transceiver Logic ETL： enhanced transceiver logic GTLP：Gunning Transceiver Logic Plus [pic]  图1-1：常用逻辑系列器件 [pic]  S - Schottky Logic LS - Low-Power Schottky Logic CD4000 - CMOS Logic 4000 AS - Advanced Schottky Logic 74F - Fast Logic ALS - Advanced Low-Power Schottky Logic HC/HCT - High-Speed CMOS Logic BCT - BiCMOS Technology AC/ACT - Advanced CMOS Logic FCT……