| 摘要 |
PURPOSE: A signal delay circuit is provided to delay an input signal with preset time even through an external voltage level is changed. CONSTITUTION: A signal delay circuit includes a voltage sensor(10) and a signal delay unit(30). The voltage sensor generates a sensing signal by sensing an external voltage level based on a reference voltage. The signal delay unit controls the delay of an input signal in response to the sensing signal. A first delay selecting unit is activated to select the delay amount with the first delay time in response to the level of the sensing signal. A second delay selecting unit is activated to select the delay amount with the second delay time in response to the level of the sensing signal. [Reference numerals] (10) Voltage sensor; (30) Signal delay unit
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