Electronic digital logic circuitry – Interface – Supply voltage level shifting
Reexamination Certificate
2006-10-10
2006-10-10
Chang, Daniel (Department: 2819)
Electronic digital logic circuitry
Interface
Supply voltage level shifting
C326S068000, C327S333000
Reexamination Certificate
active
07119578
ABSTRACT:
A level converter for interfacing two circuits supplied by different supply voltages, and integrated circuit including the level converter interfacing circuit in two different voltage islands. A first buffer is supplied by a virtual supply and receives an input signal from a lower voltage circuit. The first buffer drives a second buffer, which is supplied by a higher supply voltage. An output from the second buffer switches a supply select to selectively pass the higher supply voltage or a reduced supply voltage to the first buffer.
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Correale, Jr. Anthony
Joshi Rajiv V.
Kung David S.
Pan Zhigang
Puri Ruchir
Chang Daniel
International Business Machines Corp.
Karra, Esq. Satheesh K.
Law Office of Charles W. Peterson, Jr.
Percello, Esq. Louis J.
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