CIRCUIT FOR CONTROLLING OUTPUT BUFFER

摘要

PURPOSE: A circuit for controlling an output buffer is provided to stably drive a semiconductor device and to reduce a power consumption and the size. CONSTITUTION: A circuit for controlling an output buffer includes a selection delay(2), a comparator(3), an output buffer controller(4) and a pulse generation controller(5). The selection delay delays an output of a sense amplifier(1) for a predetermined time according to the output of the sense amplifier and an inverted output of the sense amplifier. The comparator compares an output of the selection delay with the output of the sense amplifier. The output of the comparator depends on the comparison result. The output buffer controller generates for a predetermined time a pulse which disables the output buffer according to an output of the comparator and an output of the pulse generation controller. The pulse generation controller generates a signal which controls the pulse for disabling the output buffer which is generated from the output buffer controller according to the output of the output buffer controller.