FIG. 18E illustrates 3-input configurable threshold gate 1850 (e.g., 1800) with pull-down device and having linear or paraelectric capacitors that are arranged as stacked and folded planar capacitors, and with aligned central pedestal, and an extended metal layer, in accordance with some embodiments. 3-input configurable threshold gate 1850 is like 3-input configurable threshold gate 1840 but with extended shared metal 1851 instead of extended bottom electrode 1831. While extended shared metal 1851 is coupled to the bottom electrodes of each capacitor in the same horizontal region, each capacitor includes its own bottom electrode. In various embodiments, the vias or pedestals 1852 and 1853 for summing node n1 are coupled or connected to extended shared metal 1851.
In some embodiments, pedestals or vias are formed for both the top and bottom electrodes of the planar capacitors. In this embodiment, the height of the stacked capacitors is raised, and the fabrication process adds an additional step of forming a top pedestal or via which contacts with respective plate-line electrodes.
