Semiconductor integrated injection logic structure controlled by the injector

Claim 1

A monolithic semiconductor bistable device having first and second stable states of conductivity, said bistable device comprising: a first integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first and second collectors; a second integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and a single collector; a third integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first and second collectors; a fourth integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first, second and third collectors; a fifth integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first and second collectors; a sixth integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first and second collectors; a seventh integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first and second collectors; an eighth integrated injection logic unit including a lateral PNP transistor and a vertical NPN transistor having an emitter, base and first and second collectors; First connection means connecting in common said emitters of said NPN transistors of said first through eighth units and a source of reference potential; second connection means connecting in common said first collector of said NPN transistor of said first unit, said second collector of said NPN transistor of said fourth unit, said first collector of said NPN transistor of said seventh unit and said base of said NPN transistor of said eighth unit; third connection means connecting in common said first collector of said NPN transistor of said third unit, said collector of said NPN transistor of said second unit, and said base of said NPN transistor of said fourth unit; fourth connection means connecting in common said second collector of said NPN transistor of said first unit, said first collector of said NPN transistor of said fourth unit, said base of said NPN transistor of said second unit, and said second collector of said NPN transistor of said fifth unit; fifth connection means connecting in common said second collector of said NPN transistor of said third unit, said third collector of said NPN transistor of said fourth unit, said base of said NPN transistor of said sixth unit, and said first collector of said NPN transistor of said fifth unit; sixth connection means connecting in common said second collector of said NPN transistor of said eighth unit, said base of said NPN transistor of said seventh unit and said first collector of said NPN transistor of said sixth unit; seventh connection means connecting in common said second collector of said NPN transistor of said sixth unit and said base of said NPN transistor of said fifth unit; first and second complementary output terminals (Q,Q), said first output terminal (Q) being connected to said second collector of said NPN transistor of said eighth unit, said second output terminal (Q) being connected to said second collector of said NPN transistor of said seventh unit; a preset control input (PS) terminal connected to the base of said NPN transistor of said first unit; a clock input (H) terminal connected to the base of said NPN transistor of said third unit; a data input (D) terminal connected to the base of said NPN transistor of said fifth unit; an injector and clearing input (INJ+C) terminal connected in common to the emitter of each of said lateral PNP transistors of said first through eighth Integrated Injection Logic units; said bistable device being further characterized in that the base width of each of the PNP transistors of said second, sixth and eighth units are respectively equal one to another, that the base width of each of the PNP transistors of said first, third, fourth, fifth and seventh units are respectively equal one to another, and that the base width of each of the PNP transistors of said second, sixth and eighth units is less than the base width of each of the PNP transistors of said first, third, fourth, fifth and seventh units; and said bistable device being still further characterized in that a positive pulse, applied to said preset control input terminal causes said monolithic semiconductor bistable device to assume said first stable state (Q=1) and a negative pulse applied to the injector and clearing input terminal causes said monolithic semiconductor bistable device to assume said second stable state (Q=0).