US PATENT SUBCLASS 326 / 62
INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.)

Current as of: June, 1999
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326 /   HD   ELECTRONIC DIGITAL LOGIC CIRCUITRY

62INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.) {3}
63  DF  .~> Logic level shifting (i.e., interface between devices of different logic families) {3}
80  DF  .~> Supply voltage level shifting (i.e., interface between devices of a same logic family with different operating voltage levels) {1}
82  DF  .~> Current driving (e.g., fan in/out, off chip driving, etc.) {2}

DEFINITION

Classification: 326/62

INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.):

(under the class definition) Subject matter comprising an intermediate circuit or a coupling circuit for providing an operational compatibility between noncommon logic function devices or between a logic function device and its circuit environment.

(1) Note. The noncommon logic function device may be logic devices of different logic families which require a conversion of parameters for operational compatibility.

(2) Note. Drive circuits, including buffer arrangements which convert logic signals between diverse logic devices (e.g., TTL and MOS interfacing), which develop appropriate level signals for broadly addressing electrical memory storage in conjunction with logic decoding arrangements but not specifically disclosed for the purpose of retrieving stored information from a memory are also found here.

(3) Note. Circuits for addressing specific memory storage locations are classified in Class 365, subclasses 230.01+.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

108+, for miscellaneous current drivers, subclasses 318+ for miscellaneous amplitude control in input or output circuits, and subclass 333 for miscellaneous interstage coupling.