Delay circuit with constant delay time regardless of process condition or voltage variation and pulse generator using the same

摘要

A delaying circuit is capable of constantly maintaining its delay regardless of process condition or voltage variation and a pulse generating circuit uses the delaying circuit. The delay circuit for delaying a signal that is inputted to an input stage by a predetermined time to output to an output stage, comprises a pull-up unit for pulling up the output stage in response to the signal that is inputted to the input stage, the pull-up unit including a first resistor device and a first MOS transistor that is maintained in turn-on state and is coupled to the first resistor device in parallel to delay the signal that is inputted to the input stage by the predetermined time; and a pull-down unit for pulling down the output stage in response to the signal that is inputted to the input stage.