Output driver circuit and semiconductor storage device

摘要

An output driver circuit includes an on/off-timing control circuit that outputs first and second driving signals based on an input data signal, such that the transition of the second driving signal is faster than the transition of the first driving signal when the input data signal transitions from high level to low level, and the transition of the second driving signal is slower than the transition of the first driving signal when the input data signal transitions from low level to high level. The output driver circuit is further provided with pull-down and pull-up pre-drivers that output pull-down and pull-up signals, respectively, in accordance with the first and second driving signals. The output driver circuit is further provided with pull-down and pull-up main drivers that pull down and pull up the voltage of an output terminal, respectively, in accordance with the pull-down signal and the pull-up signal.

主权项

1. An output driver circuit for outputting data signals corresponding to data read out of a memory core through an output terminal, the output driver circuit comprising:
an on/off-timing control circuit that is configured to receive an input data signal based on the data read out of the memory core and generate a first driving signal and a second driving signal in accordance with the input data signal, such that a transition of the second driving signal is faster than a transition of the first driving signal when the input data signal is transitioning from a high level to a low level, and the transition of the second driving signal is slower than the transition of the first driving signal when the input data signal is transitioning from the low level to the high level; a pull-down pre-driver that is configured to output a pull-down signal in accordance with the first driving signal; a pull-up pre-driver that is configured to output a pull-up signal in accordance with the second driving signal; a pull-down main driver that is configured to pull down a voltage of the output terminal in accordance with the pull-down signal; and a pull-up main driver that is configured to pull up the voltage of the output terminal in accordance with the pull-up signal.