Level shift circuit

Details Level shift circuit Level shift circuit

2007-11-13

2007-11-13

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S081000

Reexamination Certificate

active

10995554

ABSTRACT:
A level shift circuit having a latch function includes a precharging PMOS transistor MP1which is turned on in a precharge period to interrupt a through current of an input stage, an NMOS transistor MN1which inputs data and performs discharging in a data input period, and a transistor MP2for holding data after level shifting. Thus, each of the transistors can have a minimum configuration. Since the level shift circuit has a latch function, it is possible to omit a circuit for latching input data, thereby reducing a circuit area.

REFERENCES:
patent: 5705946 (1998-01-01), Yin
patent: 6043699 (2000-03-01), Shimizu
patent: 6351173 (2002-02-01), Ovens et al.
patent: 6456110 (2002-09-01), Elamanchill et al.
patent: 2002/0011983 (2002-01-01), Yamazaki et al.
patent: 2003/0076149 (2003-04-01), Haga
patent: 2003/0184358 (2003-10-01), Hanson et al.
patent: 2005/0195011 (2005-09-01), Tseng et al.

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