Level shift circuit

Details Level shift circuit Level shift circuit

1979-08-13

1981-10-13

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307451, H03K 19092, H03K 19094, H03K 1920

Patent

active

042950651

ABSTRACT:
A circuit adapted to receive at its input terminal signals having either a first or a second value includes a level shifting transistor for shifting the second value signals at its input terminal to a third value, where the second value is intermediate the first and third values. The transistor is turned on and off as a function of the voltage at a first node at which is produced the inverse of the input signals. An output terminal is coupled to the first node for one value of input signal and is decoupled from it for the other value of input signal. Decoupling enables the level shift transistor to always be operated as a function of the input signal while enabling signals incompatible with the signal at the first node, produced by other circuitry, to be present at, or applied to, the output terminal.

REFERENCES:
patent: 3675144 (1972-07-01), Zuk
patent: 3728556 (1973-04-01), Arnell
patent: 3755690 (1973-08-01), Smith
patent: 3801831 (1974-04-01), Dame
patent: 3823330 (1974-07-01), Rapp
patent: 3900746 (1975-08-01), Kraft et al.
patent: 4023050 (1977-05-01), Fox et al.
patent: 4031409 (1977-06-01), Shimada et al.
patent: 4080539 (1978-03-01), Stewart
patent: 4216390 (1980-08-01), Stewart

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