Voltage level shifting circuit

Details Voltage level shifting circuit Voltage level shifting circuit

2005-12-20

2005-12-20

Chang, Daniel (Department: 2819)

Electronic digital logic circuitry

Interface

Logic level shifting

C327S333000

Reexamination Certificate

active

06977523

ABSTRACT:
The voltage level shifting circuit includes a complimentary signal input circuit having a pair of MOSs of a first withstand voltage and a load circuit having a pair of MOSs of a second withstand voltage, a first voltage down-converting element which prevents a potential level exceeding the first withstand voltage from being supplied to a complementary signal input circuit, and a third MOS of the second withstand voltage electrically connecting a third power supply node to an output node responsive to a voltage potential from the load circuit. The voltage level shifting circuit also includes a fourth MOS of the first withstand voltage electrically connecting a first power supply node to the output node responsive to one of the voltage potentials of the complimentary signal, and a second voltage down-converting element which prevents a potential level exceeding the first withstand voltage from being supplied to the fourth MOS.

REFERENCES:
patent: 5113097 (1992-05-01), Lee
patent: 5559464 (1996-09-01), Orii et al.
patent: 5736869 (1998-04-01), Wei
patent: 6064229 (2000-05-01), Morris

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