Output buffer circuit with preset function

摘要

A data output buffer having an input pad and an output pad, comprising: output driver means for buffering an output of a sense amplifier through the input pad and providing it to the output pad in accordance with a control signal, the output driver means including a pull up driver and a pull down driver; voltage level detection means for receiving data fed back from the output pad and comparing the data and a reference voltage level in accordance with the control signal and a chip select signal; preset signal generation means for receiving the control signal to control an output driver control means; and the output driver control means for receiving output signals received from the voltage level detection means and the preset signal generation means to control the output driver means.