Predriver and output driver circuit using the same

Details Predriver and output driver circuit using the same Predriver and output driver circuit using the same

2011-06-07

2011-06-07

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000

Reexamination Certificate

active

07956654

ABSTRACT:
An output driver circuit includes a predriver control signal generation unit receiving a pull-up code signal, a pull-down code signal, a predriver selection signal and a read control signal and generating a pull-up control signal and a pull-down control signal; a predriver driven in response to the pull-up control signal and the pull-down control signal and receiving an internal data to drive a pull-up driving signal and a pull-down driving signal; and a driver receiving the pull-up driving signal and the pull-down driving signal and driving an output data outputted to a DQ pad, wherein the pull-up control signal and the pull-down control signal are enabled when the predriver is selected in a read operation period and a preset combination of the code signals is inputted.

REFERENCES:
patent: 6265914 (2001-07-01), Randhawa
patent: 6384644 (2002-05-01), Yamazaki
patent: 6493856 (2002-12-01), Usami et al.
patent: 7233197 (2007-06-01), Marshall et al.
patent: 7239182 (2007-07-01), Fukazawa et al.
patent: 2007/0236262 (2007-10-01), McClure
patent: 2008/0122478 (2008-05-01), Mei
patent: 11-031388 (1999-02-01), None
patent: 2002-367376 (2002-12-01), None
patent: 10-2005-0073982 (2005-07-01), None
patent: 10-2007-0036554 (2007-04-01), None
patent: 10-2008-0024411 (2008-03-01), None

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