Electronic digital logic circuitry – Interface – Supply voltage level shifting
Patent
1996-12-23
1999-06-22
Santamauro, Jon
Electronic digital logic circuitry
Interface
Supply voltage level shifting
326 83, 326 68, H03K 190185
Patent
active
059146176
ABSTRACT:
An on-chip driver is described for applications voltage output signals are desired from a digital sub-micron CMOS integrated circuit. The driver includes a signal buffer, signal level shifter, output pull-up, and an output pull-down. The signal buffer is coupled to a digital CMOS input for generating a corresponding buffered signal that is received by both the output-up down and the level shifter. The output pull-down is responsive to the buffered signal and operates to pull the output of the driver to a low voltage level of about 0 volts when the digital CMOS input is at a low logic state. Further, the level shifter is responsive to the buffered signal for generating a voltage shifted signal that is received by the pull-up which pulls the output of the driver to a high voltage level of 2.5 volts or greater when the digital CMOS input is at a high logic state.
REFERENCES:
patent: 4847522 (1989-07-01), Fuller et al.
patent: 5173624 (1992-12-01), Gabillard et al.
patent: 5179299 (1993-01-01), Tipon
patent: 5300832 (1994-04-01), Rogers
patent: 5313118 (1994-05-01), Lundberg
patent: 5378943 (1995-01-01), Dennard
patent: 5381055 (1995-01-01), Lai et al.
patent: 5381059 (1995-01-01), Douglas
patent: 5399920 (1995-03-01), Tran
patent: 5406139 (1995-04-01), Sharpe-Geisler
patent: 5428303 (1995-06-01), Pasqualini
patent: 5440249 (1995-08-01), Schucker et al.
patent: 5444397 (1995-08-01), Wong et al.
patent: 5467313 (1995-11-01), Jung et al.
patent: 5483454 (1996-01-01), Hawkins et al.
patent: 5559464 (1996-09-01), Orii et al.
patent: 5675278 (1997-10-01), Tanaka et al.
patent: 5684415 (1997-11-01), McNamus
Ohtomo Y. et al; "A Quarter-Micron SIMOX-CMOS LVTTL-Compatible Gate Array with an Over 2,000 V ESD-Protection Circuit"; May 5, 1996; pp. 57-60.
"5-Volt Signal Level Shifter in a 3-Volt CMOS Circuit"; IBM Technical Disclosure Bulletin, vol. 32, No. 7, Dec. 1, 1989, pp. 454/455.
Le Don Phu
LSI Logic Corporation
Lucente David K.
Santamauro Jon
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