摘要 |
PURPOSE:To reduce the current flowing through one of the 1st and the 2nd inverters of a device and to save electric power by making both inverters different in conductance. CONSTITUTION:Input terminals 15 and 16 are in complementary relation and the conductance ratio of a PchFET11 and an NchFET12 is equal to that of a Pch FET13 and an NchFET14. The conductance ratio of the PchFET11 and PchFET 13 and that of the NchFET12 and NchFET14 are in 1:k proportion, and the conductance of the 1st inverter and that of the 2nd inverter are in 1:k proportion. When complementary inputs are applied to the input terminals 15 and 16, the current curves of the FETs 12, 13, and 14 vary from I12 to I12b, from I13 to I13b, and from I14 to I14b, and intersections shift from P0' to P3' and from P0 to P4, so that a low voltage V18b(VL) corresponding to P4 is developed at the output terminal 19 of the 2nd inverter.
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