DATA OUTPUT BUFFER OF SEMICONDUCTOR DEVICE

摘要

a latch circuit outputting a first, a second and a third latch signal according to an output enable signal and an input signal; a pull-down transistor(Q12) operated by the third latch singal; a delay circuit(3) to delay the second latch signal; a first switching circuit switched by the output signal of the delay circuit(3); a second switching circuit switched by the second latch signal; a control circuit operated by the first latch signal, the first and the second switching signals; a reference voltage generator(4) to generate a constant reference voltage; a voltage comparator(1) to output the compared signal to the control circuit; a pull-up transistor(Q11) operated by another output signal of the control circuit; and a voltage regulator(2) operated by the second latch signal.