Cascode logic circuit including a positive level shift at the in

Details Cascode logic circuit including a positive level shift at the in Cascode logic circuit including a positive level shift at the in

1988-11-25

1990-07-17

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307454, 307475, 3073172, H03K 19086

Patent

active

049423169

ABSTRACT:
A logic circuit family derived from the conventional 2 level single-ended cascode logic circuit. The basic logic circuit performing a 2--2 OA/AI logic function shown in the attached drawing is given for illustration purposes. It comprises: a logic tree 35 comprised of top and bottom stages 37, 36 dotted at the tree output 38 to perform a determined logic function; the top stage 37 includes a current switch comprised of two input transistors TX34, TX35 connected in a differential amplifier configuration with a reference transistor TX36. The bases of input transistors TX34, TX35 are provided with at least two level shifter devices. Preferably, input level shifter devices are Schottky diodes P31, . . . which move the voltages towards the more positive voltage VPP, to add an AND function on each of these input transistors.

REFERENCES:
patent: T957007 (1977-04-01), Jordan et al.
patent: 4518876 (1985-05-01), Constantinescu
patent: 4533842 (1985-08-01), Yang et al.
patent: 4547881 (1985-10-01), Vanadarajan
patent: 4580066 (1986-04-01), Berndt
patent: 4631427 (1986-12-01), Mazumder et al.
patent: 4647799 (1987-03-01), Hsu et al.
patent: 4670673 (1987-06-01), Vanadarajan
patent: 4845387 (1989-07-01), Ovens
Wescon Technical Papers, 30th Oct.-2nd Nov. 1984, section 31/2, pp. 1-5, Anaheim, Calif., Los Angeles, U.S.; R. Allgeyer: "ECL Gate Array--The High Speed Alternative".
IBM Technical Disclosure Bulletin, vol. 27, No, 4A, Sep. 1984, pp. 2265-2266.
IBM Technical Disclosure Bulletin, vol. 27, No. 1B, Jun. 1984, pp. 681-682.
IBM Technical Disclosure Bulletin, vol. 21, No. 2, Jul. 1978, pp. 562-563.

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