| 摘要 |
PURPOSE:To use most of an operating electric current for forming a high level output signal and reduce a substantial consumption of an electric current by setting small a differential MOSFET conductance connected to a load MOSFET of an electric current mirror type of an input side. CONSTITUTION:Between a common source of differential amplifiers MOSFET Q28, Q29 and a power source voltage Vcc, a P channel type power switch MOSFET Q27 receiving an operating timing signal doc is disposed. Between a drain of the differential amplifiers MOSFET Q28, Q29 and a grounding potential point of a circuit, an N channel type active load MOSFET Q31 in a formation of an electric current mirror is disposed. Between a common drain of the MOSFET Q29, Q31 of the outputs of the differential amplifying circuit and the grounding potential point of the circuit, an N channel MOSFET Q34 receiving a control signal doc is disposed. A complementary signal of an ECL level in the other case, is supplied to an input of differential amplifying circuits (Q36-Q40) similar to the above in an opposite phase.
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