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TINA/Spice: pMOSFET (4 port) convergence error

Other Parts Discussed in Thread: TINA-TI

Tool/software: TINA-TI or Spice Models

Hello,

I am trying to simulate a Schmitt-trigger buffer using 4-port MOSFETs.  I have been able to get the MOSFETs working without any problems, however when I connect them together for the ST buffer, there is a convergence error.  Can you help me out?

/cfs-file/__key/communityserver-discussions-components-files/234/TINA_5F00_LogicSTBuffer.TSC