Logic circuit employing flip-flop circuit

Details Logic circuit employing flip-flop circuit Logic circuit employing flip-flop circuit

1997-10-14

2000-05-16

Lam, Tuan T.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

327211, 327218, H03K 3289

Patent

active

060642467

ABSTRACT:
A flip-flop circuit consists of a conventional pulse-drive flip-flop plus a clock driver and a local pulse generator that generates a pulse signal according to the output of the clock driver. The flip-flop circuits of this kind are used to form, for example, a shift register in which the clock drivers are connected in series from the last stage toward the first stage. The clock driver in the last stage receives a clock signal, which is successively supplied to the flip-flop circuits from the one in the last stage toward the one in the first stage. This arrangement prevents a data-pass-through problem, assures a sharp waveform of pulse signals, and reduces the size of each clock driver. This type of flip-flop circuits may be used to form logic circuits such as N-bit registers and N-bit shift registers.

REFERENCES:
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patent: 5406134 (1995-04-01), Menut
patent: 5497114 (1996-03-01), Shimozono
patent: 5498988 (1996-03-01), Reyes et al.
patent: 5517145 (1996-05-01), Frank
patent: 5546035 (1996-08-01), Okamoto
patent: 5557225 (1996-09-01), Denham et al.
patent: 5668490 (1997-09-01), Mitra et al.

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