目录一.常用逻辑电平标准..............................................................................................................21.1COMS电平...................................................................................................................31.2LVCOMS电平...............................................................................................................32.1TTL电平.......................................................................................................................42.2LVTTL电平...................................................................................................................43.1LVDS电平.....................................................................................................................54.1PECL(VCC=5V)/LVPECL(VCC=3.3V)电平.......................................................................55.1CML电平......................................................................................................................66.1VML电平......................................................................................................................67.1HSTL电平.....................................................................................................................67.2SSTL电平......................................................................................................................7二．常用接口电平标准...........................................................................................................71.RS232、RS485、RS422..............................................................................................72DDR1,DDR2,DDR3.........................................................................................................83PCIE2.0、PCIE3.0..........................................................................................................84USB2.0,USB3.0............................................................................................................105SATA2.0,SATA3.0..........................................................................................................106GTX高速接口...............................................................................................................11一.常用逻辑电平标准附图1：附图2：附图3：附图4：1.1COMS电平电平参数条件最大值典型值最小值单位备注电源电压（VCC）5.554.5V输入高压（VIH）3.5V输入低压（VIL)1.5V输出高压（VOH)4.44V输出低压（VOL）0.5V共模电压（VT）2.5V最高速率传输延迟时间(25-50ns)耦合方式1.2LVCOMS电平LVCOMS电平参数条件最大值典型值最小值单位备注电源电压（VCC）3.63.32.7V输入高压（VIH）0.7VCCV输入低压（VIL)0.2VCCV输出高压（VOH)VCC-0.1V输出低压（VOL）0.1V共模电压（VT）0.5VCCV最高速率耦合方式2.1TTL电平电平参数条件最大值典型值最小值单位备注电源电压（VCC）5.554.5V输入高压（VIH）2V输入低压（VIL)0.8V输出高压（VOH)2.4V输出低压（VOL）0.5V共模电压（VT）1.5V最高速率传输延迟时间(5-10ns)，耦合方式2.2LVTTL电平电平参数条件最大值典型值最小值单位备注电源电压（VCC）3.63.33V输入高压（VIH）2V输入低压（VIL)0.8V输出高压（VOH)2.4V输出低压（VOL）0.4V共模电压（VT）1.5V最高速率耦合方式3.1LVDS电平最高速率：3.125Gbps耦合方式：4.1PECL(VCC=5V)/LVPECL(VCC=3.3V)电平最高速率：LVPECL为10+Gbps耦合方式：5.1CML电平最高速率：10+Gbps耦合方式：VCC相同时CML与CML之间采用直流耦合，VCC不同时CML与CML之间采用交流耦合6.1VML电平电平参数条件最...
