Semiconductor device

摘要

The disclosed invention provides a semiconductor device capable of suitably controlling the level of an enable signal to resolve NBTI in a PMOS transistor. An input node receives an input signal alternating between high and low levels during normal operation and fixed to a high level during standby. A detection unit receives a signal through the input node and outputs an enable signal. The detection unit sets the enable signal to a low level upon detecting that the input node remains at a high level for a predetermined period. A signal transmission unit includes a P-channel MOS transistor and transmits a signal input to the input node according to control by the enable signal.

主权项

1. A semiconductor device comprising:
an input node that receives an input signal alternating between high and low levels during normal operation and fixed to a high level during standby; a detection unit that sets an enable signal to a low level upon detecting that the input node remains at a high level for a predetermined period; and a signal transmission unit that includes P-channel MOS transistors and transmits a signal input to the input node according to control by the enable signal, wherein the signal transmission unit comprises: a first NAND circuit with one input coupled to the input node and the other input coupled to an output of the detection unit; and a second NAND circuit with one input coupled to an output of the first NAND circuit and the other input coupled to the output of the detection unit.