Output pad circuit using control signal

Details Output pad circuit using control signal Output pad circuit using control signal

1997-09-17

2000-03-28

Santamauro, Jon

Electronic digital logic circuitry

Interface

Current driving

326 30, 326 58, 326 86, H03K 190185

Patent

active

060436832

ABSTRACT:
An output pad circuit is provided that adjusts a driving output current size within the chip based on a control signal. Thus, the output pad circuit adjusts a driving output current size, without attaching an external buffer or exchanging the output pad circuit, when an external load size varies during a chip design. The output pad circuit includes a tri-state inverter having an output being a tri-state level when a control signal is low level, but operating as an inverter when the control signal is high level.

REFERENCES:
patent: 5039874 (1991-08-01), Anderson
patent: 5059830 (1991-10-01), Tokumaru et al.
patent: 5621335 (1997-04-01), Andresen
patent: 5677639 (1997-10-01), Masiewicz

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