A decoder for a memory device is provided. The decoder array includes a number of address lines and a number of output lines. The address lines and the output lines form an array. A number of vertical transistors are selectively disposed at intersections of output lines and address lines. Each transistor is formed in at least one pillar of semiconductor material that extends outwardly from a working surface of a substrate. The vertical transistors each include source, drain, and body regions. A gate is also formed along at least one side of the at least one pillar and is coupled to one of the number of address lines. The transistors in the array implement a logic function that selects an output line responsive to an address provided to the address lines.

 
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