I/O driver for integrated circuit with output impedance control

Details I/O driver for integrated circuit with output impedance control I/O driver for integrated circuit with output impedance control

2008-04-24

2008-10-28

Cho, James H (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S082000

Reexamination Certificate

active

07443194

ABSTRACT:
An I/O driver has v/i characteristic control for maintaining a substantially flat output impedance response using a transmission gate configuration at an I/O output pad. The configuration includes a linear resistive element electrically connected at an I/O pad for limiting a processed data I/O signal, an active impedance element for receiving and processing the data signal, which comprises data represented by a series of voltage state transitions, and pull-up and pull-down array calibration words, for generating and outputting a processed I/O output signal to the resistive element to output a substantially flat v/i response at switching of the data signal.

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