Output circuit

Details Output circuit Output circuit

1991-06-26

1992-05-12

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307270, 307443, 307446, 3072967, 307570, H03K 512

Patent

active

051130874

ABSTRACT:
An output circuit for obtaining stable rising and falling characteristics regardless of variations in threshold voltages of output transistors. The output circuit obtains such favorable characteristics by using input signals changing in a complementary manner, a first MOS transistor which outputs a high potential level signal in response to a drive signal, and an output terminal for receiving the high potential level signal. In addition, the output circuit contains a drain-current control connected to a gate-source path for maintaining a drain current at a predetermined value, a second MOS transistor connected to a gate-source path which sets the output terminal at a ground level when it is turned on, and a second drain current control connected to a gate source of the second MOS transistor for maintaining a drain current at a predetermined value.

REFERENCES:
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patent: 4504779 (1985-03-01), Haman
patent: 4634893 (1987-01-01), Craycraft et al.
patent: 4703204 (1987-10-01), Pham
patent: 4812683 (1989-03-01), Fitzpatrick et al.
patent: 4855624 (1989-08-01), Kertis et al.
L. Forbes: "Automatic On-Chip Threshold Voltage Compensation," IBM Technical Disclosure Bulletin, vol. 14, No. 10, Mar. 1972, pp. 2894-2895.

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