US PATENT SUBCLASS 326 / 125-- .~.~ Wired logic or open collector logic (e.g., wired-OR, wired-AND, dotted logic, etc.)

US PATENT SUBCLASS 326 / 125
.~.~ Wired logic or open collector logic (e.g., wired-OR, wired-AND, dotted logic, etc.)

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}
125		.~.~ Wired logic or open collector logic (e.g., wired-OR, wired-AND, dotted logic, etc.)

DEFINITION

Classification: 326/125

Wired logic or open collector logic (e.g., wired-OR, wired-AND, dotted logic, etc.):

(under subclass 124) Subject matter which includes a logic family having their output gates eliminated simply by wiring the outputs of some basic logic circuits together, the resultant circuit is called wired-OR or wired-AND depending on the type of logic, and the joint output is in turn input to other logic gates for performing additional logic functions.

(1) Note. Wired logic is widely used in ECL having emitter outputs directly connected. There are also special TTL gates, known as open-collector gates, where collector outputs are directly connected.