| 摘要 |
A driver circuit drives a digital signal onto a differential digital data transmission bus nominally biased to a negative data state during bus idle intervals by a weak negation bias current. The driver circuit overcomes the negation bias current during an active signaling sequence and comprises a signal current source and sink pair for selectively sourcing and sinking current onto positive and negative lines of the transmission bus in accordance with internally-supplied binary data levels during the active signaling sequence, and a bias override current source and sink pair for applying an override bias current to the positive and negative lines of the transmission line without interruption during the signaling sequence.
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