High speed logic circuit having output feedback

Details High speed logic circuit having output feedback High speed logic circuit having output feedback

1988-03-11

1990-06-05

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307450, 307443, 307263, H03K 1730, H03K 17687

Patent

active

049316699

ABSTRACT:
In an NOR logic circuit employing an MES (Metal Semiconductor Junction) field effect transistors, an MES field effect transistor 2 for driving an output stage operates in response to an input signal applied to an input terminal 101 or 102 to output an output signal from an output terminal 200. In this operation, an MES field effect transistor 4 for pull-down of input operates in response to an output signal fed back by a feedback circuit comprising a diode 5 and a current power supply transistor 3 to charge and discharge the gate of the transistor 2. Therefore, the transistor 2 can operate promptly and, as a result, the logic circuit can be operated at a high operating speed.

REFERENCES:
patent: 4216390 (1980-08-01), Stewart
patent: 4661726 (1987-04-01), Biard
patent: 4697110 (1987-09-01), Masuda et al.
patent: 4743782 (1988-05-01), Nelson et al.
Christopherson, "FET Hysteresis Circuit", IBM Tech. Bulletin, vol. 15, No. 5, Oct. 1, 1972, pp. 1475-1476.
IEEE, Intl. Sol. St. Circuits: "A 64K GaAs Gate Array", by T. Terada et al., Feb. 26, 1987, pp. 144-145.
IEEE, Cus. Int. Circuits: "GaAs Gate Array Designs Using the Capacitor Diode FET Logic Approach", by F. S. Lee et al., 1986, pp. 513-516.
IEEE Cus. Int. Circuits: "The Design and Performance of a GaAs 2K Gate Array", by A. Peczalski et al., 1986, pp. 517-520.

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