/* Enabled inverter or tristate inverter  */
  cell(eninv) { 
    area : 324;
    cell_footprint : "eninv";
    pin(A) {
      direction : input;
      capacitance : 0.027;
    } /* end of pin A */
    pin(En) {
      direction : input;
      capacitance : 0.0135;
    } /*end of pin En */
    pin(Y) {
      direction : output;
      function : "A'";
      three_state : "En'";
      timing ()      {
        timing_sense : negative_unate;
        related_pin : "A";
         cell_rise(lu5x5) { values( " ... " );}
         rise_transition(lu5x5) { values( " ... " );}
         cell_fall(lu5x5) { values( " ... " );}
         fall_transition(lu5x5) { values( " ... " );}
         } /* end of enabled timing */
      timing() {
        timing_sense : positive_unate;
        timing_type : three_state_enable;
        related_pin : "En";
        cell_rise(delay_template_5x5) { values( " ... " );}
        rise_transition(delay_template_5x5) { values( " ... " );}
        cell_fall(delay_template_5x5) { values( " ... " );}
        fall_transition(delay_template_5x5) { values( " ... " );}
        } /* end of enable timing */
      timing() {
        timing_sense : negative_unate;
        timing_type : three_state_disable;
        related_pin : "En";
        cell_rise(delay_template_5x1) { values( " ... " );}
        rise_transition(delay_template_5x1) { values( " ... " );}
        cell_fall(delay_template_5x1) { values( " ... " );}
        fall_transition(delay_template_5x1) { values( " ... " );}
        } /* end of disable timing */
    } /* end of pin Y */
  } /* end of eninv */