Duty rate detecter and semiconductor device using the same

A semiconductor device comprising:

• a duty rate discharge unit suitable for performing a discharge operation in a first output terminal and a second output terminal during a first logic duration and a second logic duration of a clock signal, respectively;
• a level detection unit suitable for detecting voltage levels of the first output terminal and the second output terminal discharged to a predetermined target voltage level;
• an output unit suitable for detecting a duty rate of the clock signal at a moment when the number of the first logic duration and the number of the second logic duration representing the discharge operation time become the same after an output signal of the level detection unit is enabled;
• and
• a locking information generation unit suitable for generating duty locking information by comparing the output signal of the level detection unit with an output signal of the output unit.

A duty rate detection circuit comprising:

• a duty rate discharge unit suitable for respectively discharging a first terminal therein and a second terminal therein having corresponding predetermined voltage levels for corresponding duration between a first logic duration and a second logic duration of a clock signal;
• an output control unit suitable for generating a discharge detection signal synchronized with the first logic duration when one of the first terminal and the second terminal is discharged to a reference voltage level;
• and
• an output unit suitable for detecting in response to the discharge detection signal synchronized with the first logic duration a duty rate of the clock signal based on the clock signal having toggled until the discharge detection signal is synchronized with the first logic duration,
• wherein, the duty rate discharge unit begin discharging in synchronized with the first logic duration.