Level converter

Details Level converter Level converter

1997-12-01

1999-07-27

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327387, H03L 500

Patent

active

059296887

ABSTRACT:
A CMOS level converter including two CMOS inverter that are complimentary coupled with each other. Each of the CMOS inverter includes two MOS transistors and is coupled between a source voltage and a ground potential in series. When an input signal begins to change from a low level to a high level, one of the MOS transistors in an input side CMOS inverter is turned off, and the inverter is coupled through a diode to the ground potential. As the input level rises gradually, on the input side inverter, due to a high level output from an output side inverter, the MOS transistor turns on. As a consequent, the output is set at the ground potential in the level conversion, even when the amplitude is insufficient.

REFERENCES:
patent: 4230951 (1980-10-01), Suzuki
patent: 4616148 (1986-10-01), Ochii et al.
patent: 4978870 (1990-12-01), Chen et al.
patent: 5079439 (1992-01-01), Wanlass
patent: 5483179 (1996-01-01), Dhong
patent: 5583460 (1996-12-01), Dohi

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