CMOS differential twisted-pair driver
July 30, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCMOS interconnection circuit High speed CMOS differential interface circuits Complementary signal transmission circuit with impedance matching circuitry Interface circuits including driver circuits with switching noise reduction Low voltage swing output MOS circuit for driving an ECL circuit Output circuit and interface system comprising the same Method and circuit for controlling voltage reflections on transmission lines High-speed, low-noise, CMOS output driver Patent #: 5313118 InventorsAssigneeApplicationNo. 100662 filed on 07/30/1993US Classes:326/86, Bus driving326/30, Bus or line termination (e.g., clamping, impedance matching, etc.)326/58Complementary FET`sExaminersPrimary: Westin, Edward P.Assistant: Sanders, Andrew Attorney, Agent or FirmInternational ClassH03K 019/017.5AbstractA CMOS differential twisted-pair driver which utilizes CMOS switches and current sources advantageously. No alternative power supply is required, the switches do not have to be low impedance and the device is low power. The preferred embodiment driver further limits signal overshoot and common mode energy. The signal transmission facility is bi-directional so an off state is provided. It is doubly terminated to provide for symmetry, improved bandwidth and reduces reflective signal noise. The double termination also provides for faster rise and fall times which reduces the systems sensitivity to receiver offset. | |
