Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2006-05-02
2006-05-02
Zweizig, Jeffrey (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C326S030000
Reexamination Certificate
active
07038498
ABSTRACT:
Disclosed is an input/output circuit having a terminating circuit that contributes to a smaller chip area. The input/output includes an output buffer having a first series circuit, which comprises a first transistor and a resistor and a second series circuit, which comprises a second transistor and a resistor, connected in parallel between a high-potential power supply and an input/output pin, as well as a third series circuit, which comprises a third transistor and a resistor and a fourth series circuit, which comprises a fourth transistor and a resistor, connected in parallel between the input/output pin and a low-potential power supply. The input/output circuit further includes an input buffer having an input terminal connected to the input/output pin, and a control circuit which, at the time of a signal output, performs control for supplying a signal, which is obtained by inverting the logic of output data, to gates of the first to fourth transistors, and which, at the time of a signal input, performs control for supplying the gates of the first and third transistors with the high-potential power supply voltage and low-potential power supply voltage, respectively, and the gates of the second and fourth transistors with the low-potential power supply voltage and high-potential power supply voltage, respectively.
REFERENCES:
patent: 4859877 (1989-08-01), Cooperman et al.
patent: 5602494 (1997-02-01), Sundstrom
patent: 5644255 (1997-07-01), Taylor
patent: 5848101 (1998-12-01), Taylor
patent: 6054881 (2000-04-01), Stoenner
patent: 6411122 (2002-06-01), Mughal et al.
patent: 6625206 (2003-09-01), Doblar
patent: H03-116214 (1991-05-01), None
patent: 7-86909 (1995-03-01), None
patent: H08-162930 (1996-06-01), None
patent: H08-162942 (1996-06-01), None
patent: 9-83411 (1997-03-01), None
patent: H11-085345 (1999-03-01), None
Elpida Memory Inc.
Sughrue & Mion, PLLC
Zweizig Jeffrey
LandOfFree
Input/output circuit, reference-voltage generating circuit,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Input/output circuit, reference-voltage generating circuit,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Input/output circuit, reference-voltage generating circuit,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3573223