Semiconductor memory device

Static information storage and retrieval – Systems using particular element – Flip-flop

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G11C 1140, G11C 1300

Patent

active

043769853

ABSTRACT:
A semiconductor memory device including memory cells, formed by a pair of multi-emitter transistors each having a collector and a base which are cross connected to each other and arranged in row and column directions, and read-out transistors, each having an emitter which is commonly connected to one of the emitters of the multi-emitter transistors, wherein the read-out transistors are arranged in each column. The multi-emitter transistors and the read out transistors are formed in patterns and the characteristics of both the multi-emitter and read-out transistors have the same variation due to a dispersion of the patterns caused by the manufacturing process.

REFERENCES:
patent: 3764825 (1973-10-01), Stewart

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