US PATENT SUBCLASS 326 / 126
.~.~ Emitter-coupled or emitter-follower logic

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

104  DF  FUNCTION OF AND, OR, NAND, NOR, or NOT {7}
124  DF  .~ Bipolar transistor (e.g., RTL, DCTL, etc.) {5}
126.~.~ Emitter-coupled or emitter-follower logic {1}
127  DF  .~.~.~> Current mode logic (CML)

DEFINITION

Classification: 326/126

Emitter-coupled or emitter-follower logic:

(under subclass 124) Subject matter wherein the logic function unit includes either: (a) an emitter-coupled arrangement which has the emitters of plural input transistors connected to the emitter and the base of a referenced transistor and commonly grounded (biased) through a current source for performing a nonsaturated, differential logic operation; or (b) an emitter-follower arrangement which has a plurality of transistors with the emitters commonly coupled as an output and which produces, as an output, a signal which is in phase with the input logic signals.