Current mode logic gate

Details Current mode logic gate Current mode logic gate

1988-05-02

1989-09-19

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307445, 307263, H03K 1716, H03K 19086, H03K 512

Patent

active

048684236

ABSTRACT:
A current mode logic gate for logically combining input logic signals is comprised of a first pair of transistors each having a base, collector and at least one emitter with the emitters being coupled together to a current source while the bases are respectively coupled to first and second inputs of the gate. At least one other pair of transistors are provided the bases of which are coupled to third and fourth inputs of the gate while the collectors are respectively coupled to first and second outputs of the gate. Each of the transistors of the other pair have first and second emitters with the first emitters being coupled to the collector of one of the transistors of the first pair of transistors while the second emitter of one of the transistors of the other pair is coupled to the collector of the other one of the first pair of transistors. The second emitter of the other one of the other pair of transistors is either left open-circuited or is shorted to its base. The collectors of the other pair of transistors are respectively coupled to first and second outputs of the gate.

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