Latch circuit for holding detection state of a signal

Details Latch circuit for holding detection state of a signal Latch circuit for holding detection state of a signal

2005-04-19

2005-04-19

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S142000

Reexamination Certificate

active

06882203

ABSTRACT:
A latch circuit is configured so that even if a power-on-reset circuit is not operated in putting a power supply to work, a depletion type MIS transistor is connected as a pull-down element to an output terminal of an RS latch to thereby reliably activate the RS latch in a reset state, whereby a circuit or a semiconductor integrated circuit device is prevented from being unintendedly operated. Furthermore, channel impurities of the depletion type MIS transistor are introduced into only a part, whereby it is possible to realize a semiconductor integrated circuit device which is excellent in safety and which is readily operated with less current consumption and with low cost.

REFERENCES:
patent: 4484088 (1984-11-01), Mazin et al.
patent: 4791614 (1988-12-01), Arakawa
patent: 5774402 (1998-06-01), Lee
patent: 5831460 (1998-11-01), Zhou
patent: 6204703 (2001-03-01), Kwon

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