US PATENT SUBCLASS 326 / 80
.~ Supply voltage level shifting (i.e., interface between devices of a same logic family with different operating voltage levels)

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

62  DF  INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.) {3}
80.~ Supply voltage level shifting (i.e., interface between devices of a same logic family with different operating voltage levels) {1}
81  DF  .~.~> CMOS

DEFINITION

Classification: 326/80

Supply voltage level shifting (i.e., interface between devices of a same logic family with different operating voltage levels):

(under subclass 62) Subject matter comprising a circuit for translating signal data from one device to another device of the same logic family but which operate at differing voltage supply levels.

(1) Note. For example, since read and write voltages for a programmable memory have different levels, it is necessary to provide a circuit which can deal with voltage of two levels and control the supply of the two level voltages to the memory. Whenever such a circuit is claimed with a memory circuit (PROM, EPROM, etc.), classification is in Class 365. If a memory circuit is not claimed, classification is in Class 326.

SEE OR SEARCH CLASS

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

333, for miscellaneous interstage coupling (e.g., level shift, etc.).