Output buffer with reference voltage circuit for increasing spee

Details Output buffer with reference voltage circuit for increasing spee Output buffer with reference voltage circuit for increasing spee

1995-12-20

1997-04-01

Westin, Edward P.

Electronic digital logic circuitry

Interface

Current driving

326 17, 326 58, 326 87, H03K 19017, H03K 190948

Patent

active

056170432

ABSTRACT:
A data output buffer rapidly transits an output data signal to improve the data reading speed of a semiconductor memory device. To do this, the data output buffer comprises a first input terminal for receiving true data, a second input terminal for receiving complementary data, a pull-up MOS transistor connected between a first power supply and an output line and being driven by the true data from the first input terminal, a pull-down MOS transistor connected between a second power supply and the output line and being driven by the complementary data from the second input terminal, a reference logic voltage generator for supplying a reference logic voltage to the output line, and a controller for driving the reference logic voltage generator, by the true data from the first input terminal and the complementary data from the second input terminal to be complementary to the pull-up MOS transistor and the pull-down MOS transistor.

REFERENCES:
patent: 4570091 (1986-02-01), Yasuda et al.
patent: 4983860 (1991-01-01), Yim et al.
patent: 4988888 (1991-01-01), Hirase et al.
patent: 5311076 (1994-05-01), Park et al.

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