Patents by Inventor Edward W. Kirk, Jr.

Edward W. Kirk, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4430585
    Abstract: A power-down network is included in a tristate TTL circuit to reduce power dissipation in the high impedance third state while permitting high switching speeds during bistate operation of the circuit. The power-down circuit includes a power-down transistor connected in series between the collector resistor and collector of the phase splitter transistor. The base of the phase splitter transistor is connected through a diode to the disabling gate. A first resistor having a significantly higher value than the collector resistor is connected between the base of the power-down transistor and the V.sub.CC terminal. When the circuit is in the high impedance state, the power-down transistor is turned off to interrupt current flow through the collector resistor, and a relatively high impedance current path through the first resistor to the disabling gate is substitute for an otherwise relatively low impedance current path through the collector resistor.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: February 7, 1984
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Edward W. Kirk, Jr.