Logic circuit of the emitter-coupled type, operating at a low su

Details Logic circuit of the emitter-coupled type, operating at a low su Logic circuit of the emitter-coupled type, operating at a low su

1996-04-12

1998-02-10

Westin, Edward P.

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Bipolar transistor

326126, 326 80, H03K 19086, H03K 1920

Patent

active

057173478

ABSTRACT:
The invention relates to a logic circuit of the emitter-coupled type. For operation with a low supply Voltage, for example a single battery element, the bases of the transistors (Q1, Q2) forming a differential pair receive the input signal (Vi, Vi) via a coupling capacitance (C1, C2), a low-frequency bias being provided by means of MOS transistors (M1, M2) driven by input signals opposed to those applied to the corresponding bases, said MOS transistors being coupled to a line (3) at a voltage (vb) higher than the supply voltage (V1) supplied by a generator (10) provided for this function.

REFERENCES:
patent: 3094632 (1963-06-01), Wartella
patent: 5148059 (1992-09-01), Chen et al.
patent: 5256917 (1993-10-01), Flannagan et al.
patent: 5329182 (1994-07-01), Yu

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