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 LogicCMOS：Complementary Metal Oxide SemicondutorLVTTL：Low Voltage TTLLVCMOS：Low Voltage CMOSECL：Emitter Coupled Logic，PECL：Pseudo/Positive Emitter Coupled LogicLVDS：Low Voltage Differential SignalingGTL：Gunning Transceiver LogicBTL： Backplane Transceiver LogicETL： enhanced transceiver logicGTLP：Gunning Transceiver Logic Plus[pic] 图1-1：常用逻辑系列器件[pic] S - Schottky LogicLS - Low-Power Schottky LogicCD4000 - CMOS Logic 4000AS - Advanced Schottky Logic74F - Fast LogicALS - Advanced Low-Power Schottky LogicHC/HCT - High-Speed CMOS LogicBCT - BiCMOS TechnologyAC/ACT - Advanced CMOS LogicFCT……