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Component for logic circuits and logic circuits equipped with this component
| Details |
Inventors: Ngutung, Pham;
Assignee: Thomson-CSF (Paris, FR)
Primary Examiner: Heyman; John S.
Assistant Examiner:
Attorney, Agent or Firm: Cushman, Darby & Cushman
A component for integrated logic circuits comprises two complementary transistors integrated on the same substrate. A Schottky diode is connected in parallel with the output electrode and prevents saturation of the output transistor when it is in the conductive state. |
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DETAILED DESCRIPTION What I claim is: 1.
A solid state component for logic circuit comprising integrated upon one and the same substrate, in combination, a first, a second, a third and a fourth semiconductive layer forming three rectifying junctions, and a first and a second complementary transistor having respective emitters, bases and collectors, said first layer being the emitter of said first transistor, said second layer, the base of said first transistor and the emitter of said second transistor, the third layer being the collector of said first transistor and the base of said second transistor, the fourth layer being the collector of said second transistor, said first layer being connected to ground, said second layer being adapted for connection to a constant d.
c.
current source, a rectifying element connected in parallel with said third and said fourth layers, said third layer being connected to ground when said first transistor is conductive, and the voltage drop across said rectifying element when unblocked being predetermined and lower than the voltage drop across said third and fourth layer when the junction formed therebetween is unblocked.
2.
A component as claimed in claim 1 wherein in the first transistor, the current flows laterally and in the second transistor transversely.
3.
A component as claimed in claim 1, wherein said constant d.
c.
current source comprises a third transistor having a base connected to said third layer, and a collector connected to said second layer.
Description:
This invention relates to a new component for logic circuits and to the circuits equipped with this component.
It is known that the qualities required of a component for logic circuits are, on the one hand, its energy consumption and, on the other hand, its switching speed from the conductive state to the blocked state and vice versa.
In the majority of circuits based on bipolar transistors, the transistors are close to saturation when they are conductive.
Their switching time from the conductive state to the blocked state is increased, because the minority electrical charges stored in certain regions of the structure take a certain time to disappear
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Electrical and Wave 
