摘要:
Plural bootstrap capacitors are coupled to an output stage of a MOSFET driver. A conventional bootstrap driver is preceded by one or more additional bootstrap stages. Each one includes a capacitor, a tri state inverter and a delay section. When the output stage is off all capacitors are discharged. To turn the output stage on, all capacitors, including the output gate capacitance, are charged in parallel. Then each capacitor in turn is caused to pump its charge into the gate of the output stage, with the last capacitor pumping the output stage gate voltage to a level well in excess of the applied power supply voltage.
摘要:
A circuit of complementary field effect devices whose logical input threshold voltage can be varied between levels suitable for TTL logic or CMOS or PMOS or other logic under control of an electrical signal in real time.
摘要:
An FET load gate compensator circuit is disclosed which compensates for variations in the parameters characterizing the silicon substrate in FET large scale integrated circuit device, by generating a compensatory load gate voltage to be applied to the load gates of the functional circuits therein.
摘要:
A novel high-speed logic gate of compact design, having low energy consumption comprises a plurality of components each constituted by two complementary transistors and saturable resistors integrated upon one in the same substrate. The base of the first transistor has for its base a portion of the collector of a second transistor, and for its collector the base of the second transistor. The second transistor has its base diffused into its emitter into its base.
摘要:
A semiconductor circuit device comprises a first depletion type n-channel insulated gate field effect transistor (hereinafter referred to as IG-FET) having its gate and source electrodes connected to each other, a second depletion type n-channel IG-FET connected between the source electrode of the first n-channel IG-FET and a positive power source and having its source and gate electrodes connected to each other, an enhancement type n-channel IG-FET connected between the source electrode of the first IG-FET and ground and having its gate electrode connected to an input terminal, an output terminal connected to the drain electrode of the first IG-FET, and a capacitor connected to the above-mentioned output terminal and ground. When a potential on the above-mentioned input terminal is dropped down to zero volt, the first depletion type IG-FET is abruptly shifted to the ON state, causing the capacitor to be abruptly charged by a positive power source. When the potential on the above-mentioned input terminal is raised to a predetermined positive level, the capacitor is slowly discharged through a zero-volt channel i.e. a remaining channel of the first depletion type IG-FET whose gate electrode is biased to zero volt.
摘要:
A dual inverter circuit wherein the first inverter circuit includes a pair of phase splitter transistors, one serving to feed the base of the pull-up transistor in the first inverter circuit and the other serving to feed the base of the phase splitter transistor in the second inverter circuit. The circuit provides a minimum delay time between the operation of the first inverter and the turn-on time of the second inverter while also providing active pull-up circuits, i.e., pull-up transistors, in the two inverters to insure fast operate times for both inverters especially desirable when feeding into large capacitance loads.
摘要:
A circuit for generating a logic function and its logical complement of N binary variables utilizing MOS transistors which are all of the same conductivity type. The circuit may include an N input NAND gate comprising N MOS transistors and a load element, the conduction paths of the transistors connected in series with the load element to form a first series circuit and an inverter circuit having N+1 MOS transistors, the conduction paths of which are connected in series to form a second series circuit. Each series circuit is connected between the same operating voltage terminals and the two are interconnected to one another in such manner that the power dissipation of the circuit compares favorably with a CMOS inverter.
摘要:
An MOS dynamic buffer circuit described in terms of an inverter and used for inverting a timing signal is disclosed. Through the use of bootstrapping, the output from the inverter is equal to the voltage used to drive the inverter without having conduction through the output transistor when the inverter is not supplying an output signal. Thus, the inverter does not require the large amounts of standby power associated with prior art circuits.
摘要:
An integrated logical circuit device for providing a wired ''''OR'''' logic function between chips or circuit devices which include logical circuits of the ratioless type, comprises ''''floating'''' circuits and OR gate circuits which are formed within the corresponding chips or circuit devices. Each floating circuit determines the level of an output signal in dependence on a signal from the logical circuit at a prescribed time and makes its output terminal floating at another time. The OR gate circuits receive the output signal at the prescribed time and a signal from the logical circuit at the another time, to provide a wired OR circuit.
摘要:
A clock driven dynamic inverter produces high speed-low power signal inversion, with a high voltage output swing. Such operation is accomplished in one illustrative dynamic inverter embodiment with two specially phased clock driven switching MOSFETs, a dynamically driven load MOSFET, incorporating positive capacitive voltage feedback, and an input signal-responsive driver MOSFET.