Input signal variation detection circuit

Details Input signal variation detection circuit Input signal variation detection circuit

1997-07-30

1999-08-10

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By presence or absence pulse detection

327 26, H03K 519, H03K 908

Patent

active

059364319

ABSTRACT:
An input signal variation detection circuit effectively detects transitions of input signals from a memory apparatus. The circuit includes a plurality of unit blocks for detecting transitions of input signals and for outputting transition detection signals corresponding to the transition direction, e.g., from high to low level or from low to high level, a first transistor having a drain coupled for receiving a transition detection signal from the unit blocks, a gate coupled for receiving a first prescribed voltage, and a source coupled for receiving a second prescribed voltage, and an OR-gate for ORing a transition detection signal from the unit blocks and outputting a summation signal.

REFERENCES:
patent: 5424661 (1995-06-01), Lin et al.
patent: 5661419 (1997-08-01), Bhagwan
patent: 5696463 (1997-12-01), Kwon
patent: 5777492 (1998-07-01), Suyama et al.

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