Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-10-30
1993-05-11
Westin, Edward P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307300, 307549, 307455, H03K 333, H03K 19082
Patent
active
052104478
ABSTRACT:
An anti-saturation clamp for a word decoder utilizes a Schottky Barrier Diode (SBD) S.sub.x in combination with a transistor T.sub.x. The transistor T.sub.x is in circuit with a switching transistor T and diverts the majority of pull down current from the switching transistor. The saturation capacitance of the transistor T is negligible even at high temperature operation, and the transistor T does not operate in saturation. The SBD clamp S.sub.x is in circuit between transistors T.sub.x and T, and can be significantly smaller than a conventional SBD clamp since the clamp current is amplified by transistor T.sub.x. The improved anti-saturation clamp eliminates delay otherwise resulting from saturation capacitance of the switching transistor and results in a performance gain of about 40% for nominal operations. Also contemplated by the invention are improved word decoder systems per se (those which incorporate the aforementioned anti-saturation clamp), and improved methods for enhancing the performance of word decoder systems to, for example, support advanced computing applications.
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Walach, New Up Level Clamp for Push-Pull Off-Chip Drivers, IBM Technical Disclosure Bulletin, vol. 30 #7, p. 134, Dec. 1987.
Klein, Low Power Word Line Driver, IBM Technical Disclosure Bulletin, vol. 30, #6, 382-3, Sep. 1987.
International Business Machines - Corporation
Peterson Jr. Charles W.
Sanders Andrew
Westin Edward P.
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