摘要:
A NAND gate circuit, which can be used for a decoder circuit, includes a high potential voltage source (V cc ), an output terminal (V OUT ), a load element (T₁) connected between the high potential voltage source (V CC ) and the output terminal (V OUT ), and a driving circuit serially connected between the output terminal (V OUT ) and a low potential voltage source (V ss ) and comprising a plurality of serially-arranged driving transistors (T₂,T₃,T₄,T₅,T₆), respective input signals (a,b,c,d,e) being applied to the transistor gates. At least one of the transistors of the driving circuit has a driving performance different from at least one other transistor of the driving circuit, whereby improvements are attainable as regards erroneous operation of the NAND gate circuit, when subject to noise, by virtue of improved uniformity of the input threshold voltage for different combinations of input signals.
摘要:
n the buffer circuit (B) for an integrated circuit according to this invention a load MOS transistor (Q1) and a drive MOS transistor (Q2) are connected in series between a power source potential node (Vcc') and a ground potential node (Vss') of the integrated circuit. A constant current circuit means (Q3) is connected in series with a circuit including the load MOS transistor (Q1) and the drive MOS transistor (Q2).
摘要:
A high speed buffer amplifier circuit comprising a first inverter including a driver transistor (Q13), a second inverter which receives the output signal (B) from the first inverter, and a control transistor (Q17) which is driven by the output signal (C) from the second inverter and which operates so as to enlarge upon a change in the potential difference between the gate and the source electrode of the driver transistor (Q13) of the first inverter, when the level of input signal (A) is changed.
摘要:
La porte logique est constituée par un transistor inverseur multidrain MOS monocanal à enrichissement et par un élément de charge (30) relié à la zone de grille (ZG, o ) du transistor inverseur. Sur un premier niveau d'implantation d'un substrat sont implantées la zone de source unique (ZS, o ) et chaque zone de drain (ZD) du transistor inverseur, séparées par la zone de canal unique du transistor inverseur. Un second niveau d'implantation constitue au moins la zone de grille (ZG 10 ) en silicium polycristallin du transistor inverseur qui est superposée à la zone de canal par l'intermédiaire d'une couche isolante au-dessus du premier niveau d'implantation et entourée complètement par la zone de source (ZS, 10 ). La porte logique présente une densité d'intégration élevée. A cette fin, au moins une zone de drain (ZD 11 ) est séparée d'une zone de drain voisine (ZD 1 2 ) par une zone isolante (ZI 11-12 ) s'étendant du premier jusqu'au moins au-delà du second niveau d'implantation, et/ou l'élément de charge (30) est une zone résistive implantée au-dessus du premier niveau d'implantation par l'intermédiaire d'une zone isolante.
摘要:
Digital logic driving stage circuitry is provided connected between ground (11) and a single voltage (V) with an enhancement mode type field effect transistor (2)and a depletion mode type field effect transistor (9)connected source to drain in series between the single voltage and ground. The gate (8) of the enhancement mode type field effect transistor (2) is the input of the logic signal and the gate (13) of the depletion mode type field effect transistor (9) is connected to ground (11), with the output at the connection between the transistors. A family of digital logic circuits is provided with circuit units made up of an enhancement mode logic input (15, 16, 17), depletion mode load (30) circuitry stage and an enhancement mode input grounded source follower load driving stage (2, 9).
摘要:
A NOR gate consisting of a set of input FET's - (Q1, -Q1 M ) has a clamp (12/02) that, when at least one of the input FET's is turned on, clamps the logical low level of the gate output voltage at a value which is largely constant irrespective of how many of the input FET's are conductive.