Shift register device and method of driving the same

Details Shift register device and method of driving the same Shift register device and method of driving the same

1998-05-20

2000-05-02

Wambach, Margaret R.

Electrical pulse counters, pulse dividers, or shift registers: c

Shift register

Particular transfer means

377 81, G11C 1900

Patent

active

060581565

ABSTRACT:
A race-free shift register device having a plurality of series-connected flip-flop circuits and latch circuits. By a delay circuit, the timing of a clock signal input to each individual flip-flop circuit is delayed with respect to the clock signal input to the associated latch circuit, so that the operating timing of the latch circuit is not delayed with respect to the operating timing of the flip-flop circuit, even if a skew happens to occur in the clock signal. The latch circuit therefore surely holds bit data output by the flip-flop circuit, so the bit data to be input to a preceding flip-flop circuit is prevented from being prematurely provided to a succeeding flip-flop circuit, thereby ensuring prevention of a race condition.

REFERENCES:
patent: 5239206 (1993-08-01), Yanai
patent: 5574896 (1996-11-01), Li et al.
Microelectronic Circuits, Sedra et al. Oxford University Press p. 1099, 1998.

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