Low power/high speed static ram

摘要

An integrated circuit, metal-oxide-semiconductor (MOS) static random-access memory (RAM) with a power-down mode is described. The bistable memory cells employed in the memory include low conductivity, depletion mode transistors used as loads. "Zero" threshold voltage devices are employed on a low body-effect substrate to permit the powering-down of many circuits in the memory without affecting circuit performance. Several circuits employing these zero threshold devices are described.