CMOS high-to-low voltage buffer

Details CMOS high-to-low voltage buffer CMOS high-to-low voltage buffer

1998-12-18

2000-12-26

Lam, Tuan T.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

326 62, 326 80, 326 81, H03L 500

Patent

active

061665800

ABSTRACT:
A voltage-buffer circuit for changing an input signal at a first voltage range to an output signal at a second voltage range. In one embodiment, the voltage-buffer circuit is comprised of an input lead for receiving an input signal at a first voltage range, a plurality of transistors coupled to the input lead, and an output lead coupled to the plurality of transistors. The purpose of the transistors is to convert the input signal at the first voltage range to an output signal at a second voltage range. The output lead is for receiving the output signal at the second voltage range from said plurality of transistors. The plurality of transistors are arranged into a plurality of stages, with at least one of the transistors having a gate oxide of a first thickness and at least one of the transistors having a gate oxide of a second thickness, where the first thickness is less than said second thickness.

REFERENCES:
patent: 5270944 (1993-12-01), Kuroda et al.
patent: 5287393 (1994-02-01), Miwada
patent: 5534801 (1996-07-01), Wu et al.
patent: 5821136 (1998-10-01), Chan et al.

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