US PATENT SUBCLASS 326 / 43-- .~.~.~ Emitter-coupled logic or emitter-follower logic

US PATENT SUBCLASS 326 / 43
.~.~.~ Emitter-coupled logic or emitter-follower logic

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

37	DF	MULTIFUNCTIONAL OR PROGRAMMABLE (E.G., UNIVERSAL, ETC.) {6}
39	DF	.~ Array (e.g., PLA, PAL, PLD, etc.) {4}
42	DF	.~.~ Bipolar transistor {1}
43		.~.~.~ Emitter-coupled logic or emitter-follower logic

DEFINITION

Classification: 326/43

Emitter-coupled logic or emitter-follower logic:

(under subclass 42) 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.