Output buffer circuit having a DC driver and an AC driver

Details Output buffer circuit having a DC driver and an AC driver Output buffer circuit having a DC driver and an AC driver

1992-11-12

1995-02-14

Westin, Edward P.

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

326121, 326 58, 326110, 327333, H03K 190948

Patent

active

053898346

ABSTRACT:
This invention discloses a signal output circuit including DC and AC buffers having output nodes commonly connected to a signal output terminal, and an AC buffer control circuit for driving the AC buffer when an output from the DC buffer is changed and for controlling an output from the AC buffer in a high-impedance state when the output from the DC buffer is stationary.

REFERENCES:
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patent: 4678943 (1987-07-01), Uragami
patent: 4731553 (1988-03-01), Van Lehn et al.
patent: 4829199 (1989-05-01), Prater
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patent: 5047669 (1991-09-01), Iwamura et al.
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patent: 5132568 (1992-07-01), Kim et al.
patent: 5212801 (1993-05-01), Farmer
patent: 5220205 (1993-06-01), Shigehara et al.
"High Speed CMOS Off-Chip Driver Designs For Improved Performance", IBM Technical Disclosure Bulletin, vol. 31, No. 5, Oct., 1988, New York, US, pp. 331-332.

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