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pullup resistor in ltspice

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vamsee

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i am newbie in ltspice. can anyone help me in drawing this circuit..
 

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    bassa

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The resistor is at the top of the LTspice window.

The 74HC04 logic inverter and simple switch are not standard models in LTspice.

There is a device labeled "sw" which is a voltage controlled switch that can be used for the switch in your diagram. Otherwise there are some switch models located at the Yahoo LTspice Users Group.

I believe the Yahoo LTspice Users Group also has a 74HC library which you can download and install. The LTspice manual tells you how to install additional libraries.

If you just need a generic model, there is a "inv" device in LTspice that performs the ideal inverter function.
 

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