I'm working on a project that involves using a 4051 chip. I have attached a small schematic of what I'm talking about.
Since pin 3 of the 4051 is connected to ground and A, B, and C are grounded I thought that would enable X0 to be connected to ground thus giving the input of the 540 buffer a logic level 0.
However I'm not getting logic 0 at the D0 input of the 540 buffer. I'm getting the voltage drop of the pull up resistor which is 1.4V.
Does anyone have a solution on how I can make D0 logic level 0 when A, B, and C are grounded? I also must have X0 either floating or a logic high when A, B, and C are something else.
Thanks,
Scott
Since pin 3 of the 4051 is connected to ground and A, B, and C are grounded I thought that would enable X0 to be connected to ground thus giving the input of the 540 buffer a logic level 0.
However I'm not getting logic 0 at the D0 input of the 540 buffer. I'm getting the voltage drop of the pull up resistor which is 1.4V.
Does anyone have a solution on how I can make D0 logic level 0 when A, B, and C are grounded? I also must have X0 either floating or a logic high when A, B, and C are something else.
Thanks,
Scott
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