Electronic digital logic circuitry – Interface – Logic level shifting
Reexamination Certificate
2011-03-01
2011-03-01
Barnie, Rexford N (Department: 2819)
Electronic digital logic circuitry
Interface
Logic level shifting
C326S080000, C327S333000
Reexamination Certificate
active
07898292
ABSTRACT:
A level converter comprising an input circuit, coupled to a low power source and a first high power source, which generates a complementary first signal and second signal; and a shift circuit that outputs an output signal generated by shifting a voltage level of the input signal, the shift circuit including: a latch circuit having: a first inverter circuit provided in a first path between a second high power source and the low power source; and a second inverter circuit provided in a second path between the second high power source and the low power source, wherein the latch circuit is formed by coupling an input terminal and an output terminal of the first inverter circuit and the second inverter circuit; a first transistor coupled to the first path; and a second transistor coupled to the second path.
REFERENCES:
patent: 5559464 (1996-09-01), Orii et al.
patent: 6650168 (2003-11-01), Wang et al.
patent: 7112996 (2006-09-01), Lee
patent: 7151400 (2006-12-01), Chen
patent: 7268588 (2007-09-01), Sanchez et al.
patent: 10-336007 (1998-12-01), None
Arent & Fox LLP
Barnie Rexford N
Fujitsu Semiconductor Limited
Hammond Crystal L
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