CMOS LATCH CIRCUIT WITH SET/RESET ALLOWING PREFERENTIAL RESET

摘要

PURPOSE:To decrease the number of circuit elements by two elements, to simplify a wiring pattern and to make a chip size compact by using an inverter and 12 MOS transistors. CONSTITUTION:A CMOS latch circuit is composed of an inverter 1, first conductive type 1st-3rd MOS transistors Q1-Q3, second conductive type 4th-6th MOS transistors Q4-Q6, first conductive type 7th and 8th MOS transistors Q7 and Q8, second conductive type 9th MOS transistor Q9, first conductive type 10th and 11th MOS transistors Q10 and Q11 and second conductive type 12th MOS transistor Q12. Thus, an area to be occupied by the element and wiring pattern can be reduced and the chip size can be made compact.