Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2006-04-25
2006-04-25
Le, Don P. (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S086000
Reexamination Certificate
active
07034574
ABSTRACT:
A differential signal output driver circuit having four switching transistors and having a bias transistor that shields each of the switching transistors from the corresponding output terminal thereby blocking the Miller capacitance of the switching capacitor from generating overshoot or undershoot in the output differential voltage. Also, the output driver circuit may be driven by a differential skew cancellation circuit that generates a balanced differential signal to drive the switching transistors to further improve signal integrity. The signal path for generating each signal in the differential signal goes through a similar structure thereby ensuring similar slew in each differential signal provided to the output driver circuit.
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AMI Semiconductor Inc.
Le Don P.
Workman Nydegger
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