High-density low-power circuit for sustaining a precharge level

摘要

A high density pull-up circuit provides a sustaining pull-up voltage for a logic node such as, for example, a precharged column in a programmable logic array (PLA). The pull-up circuit employs a current source and a first current mirror circuit which in turn drives a plurality of second mirror transistors, each of the second mirror transistors being coupled between a positive supply voltage and one of the column lines of the PLA.