输出高电平的阀值Vth=R2/(R2+R3)*(Vh-Vcc/2)
输出低电平的阀值Vtl=R2/(R2+R3)*(Vl-Vcc/2)
一般Vl=0v,那么低电平的阀值为负值。从直觉上觉得低电平的阀值应为正值。
请问下我的理解是那里错了。
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输出高电平的阀值Vth=R2/(R2+R3)*(Vh-Vcc/2)
输出低电平的阀值Vtl=R2/(R2+R3)*(Vl-Vcc/2)
一般Vl=0v,那么低电平的阀值为负值。从直觉上觉得低电平的阀值应为正值。
请问下我的理解是那里错了。