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TINA/Spice/SN74AC14: TINA/Spice/

Part Number: SN74AC14
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Greetings,

I am a beginner at Spice modeling. I have built a ring oscillator using inverting Schmidt trigger(SN74AC14). The states do oscillate inversely but there is no delay between the voltage outputs of the different inverters. I require the delay between the inverters. How do I achieve that? 

Is there something wrong in the spice model macro file or is my circuit missing something or the way of analyzing?

Here are the circuit and its transient curves. See the Y2 for inverter outputs.

I have also attached the spice model macro of SN74AC14.

Thank you in advance.

6562.SN74AC14_Behavioral_Model_v190325.TSC