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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-TransistorLogicCMOS:ComplementaryMetalOxideSemicondutorLVTTL:LowVoltageTTLLVCMOS:LowVoltageCMOSECL:EmitterCoupledLogic,PECL:Pseudo/PositiveEmitterCoupledLogicLVDS:LowVoltageDifferentialSignalingGTL:GunningTransceiverLogicBTL:BackplaneTransceiverLogicETL:enhancedtransceiverlogicGTLP:GunningTransceiverLogicPlus[pic] 图1-1:常用逻辑系列器件[pic] S-SchottkyLogicLS-Low-PowerSchottkyLogicCD4000-CMOSLogic4000AS-AdvancedSchottkyLogic74F-FastLogicALS-AdvancedLow-PowerSchottkyLogicHC/HCT-High-SpeedCMOSLogicBCT-BiCMOSTechnologyAC/ACT-AdvancedCMOSLogicFCT……