Current-mode logic circuit
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United States of America Patent
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Aug 27, 1996
Grant Date -
N/A
app pub date -
Sep 21, 1995
filing date -
Sep 28, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A current-mode logic circuit is provided having large gain and resistance to noise or power source fluctuations which employs in its logic circuits circuits that shape waves. Such a current-mode logic circuit entails little increase in the area of integrated circuits. In addition to a differential logic pair composed of MOS transistors M31 and M32, load elements R31 and R32, and constant-current source I31, the current-mode logic circuit of the present invention is provided with a holding transistor pair composed of MOS transistors M33 and M34. MOS transistors M31 and M32 have equal conductance, and MOS transistors M33 and M34 have equal conductance. In addition, the present invention is characterized in that the sum of conductance of MOS transistors M31 and M33 is a constant if the electrical power consumption of the circuits is constant.
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