Electronic digital logic circuitry – Interface – Current driving
Patent
1999-06-09
2000-07-04
Santamauro, Jon
Electronic digital logic circuitry
Interface
Current driving
326 27, 326 83, H03K 190185
Patent
active
060844345
ABSTRACT:
An output driver circuit offers wave-shaping and logic level adjustment for high speed data communications in a synchronous memory such as a dynamic random access memory (DRAM). Level adjustment is obtained by resistive division between a termination resistor and controllable impedances between an output node and VDD and VSS power supplies. Wave-shaping functions include slew rate modification of the signal at the output node, by sequentially turning on or off output transistors in response to a transition in an input signal. Different schemes of weighting the output transistors obtains different wave-shaping, characteristics of the output signal.
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Le Don Phu
Micro)n Technology, Inc.
Santamauro Jon
LandOfFree
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