Logic circuit

Details Logic circuit Logic circuit

H - Electricity

03

K

328/139

H03K 19/086 (2006.01) H03K 3/286 (2006.01) H03K 3/2885 (2006.01)

Patent

CA 1277722

ABSTRACT OF THE DISCLOSURE A logic circuit adapted for fabrication as an integrated circuit is formed having a differential amplifier operating with a constant current source and an appropriate voltage source, and having output transistors to provide the necessary output voltages, does not require a reference voltage input to the differential amplifier, thus, reference voltage transistors are not required. The two binary input signals are selected to have the same amplitude difference between the high and low levels thereof and one of the two input signals is shifted relative to the other one by the amount substantially equal to 1/2 the selected amplitude difference, and the output signals are similarly level shifted. Using this basic logic circuit as a building block other, more complex, logic circuits can be obtained.

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