Patent ID: 8737150
Filing Date: 2014-05-27
Classification: G01R,G11C

Abstract:
1. A semiconductor device comprising: a differential circuit; a power supply circuit that provides a power supply to the differential circuit; wherein current to be supplied to the differential circuit by the power supply circuit is controlled, based on logics of a burn-in mode signal and an activation control signal of the differential circuit, the differential circuit comprises a differential type input circuit that receives an external input signal received from an external connection terminal and a reference voltage signal as differential input signals, compares a voltage level of the external input signal with a voltage level of the reference voltage signal when the activation control signal is at an active level, and outputs a result of the comparison as an output signal; a first differential pair comprising transistors of a first conductivity type, the external input signal being supplied to one of the transistors and the reference voltage being supplied to the other of the transistors; a first load circuit that becomes a load for the first differential pair; a second differential pair comprising transistors of a second conductivity type, the external input signal being supplied to one of the transistors and the reference voltage being supplied to the other of the transistors; and a second load circuit that becomes a load for the second differential pair.