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5532620 Input buffer circuit capable of corresponding to variation of operating voltage in semiconductor integrated circuit  
An input buffer circuit for converting a TTL(TTL:Transistor transistor logic) level signal supplied from an outside into an internal CMOS level signal. The input buffer circuit comprises a power...
5519338 Controlled slew rate output buffer  
An output buffer that controls the slew rate of its output signal is disclosed. The buffer includes a pull-up and a pull-down bipolar transistor coupled at a common output node in series between...
5517142 Output buffer with a reduced transient bouncing phenomenon  
An output buffer is disclosed. In the prior art, when an output buffer swings to a supply voltage Vcc and a ground voltage Vss, the current drops rapidly at the supply voltage or the ground...
5517130 Method and structure for reducing noise in output buffer circuits  
A method and structure for controlling ground bounce and power supply noise during switching is provided in which a plurality of pull-up and/or pull-down transistors are provided whose turn on...
5508635 Reduced noise data output buffer with output level regulation  
A data output buffer in a semiconductor device is disclosed. A data output buffer can decrease noise generated in a power line when the output data is inverted, by equalizing the output voltage of...
5500611 Integrated circuit with input/output pad having pullup or pulldown  
Voltage pullup or pulldown devices of general purpose input/output pads of integrated circuit chips are controlled by signals derived from a core of the chip and which indicate (1) if the pad is...
5489861 High power, edge controlled output buffer  
An output buffer circuit with edge-rate control capable of maintaining both rising and falling edge-rates within narrow specifications in the face of wide variations in load impedance. In...
5489859 CMOS output circuit with high speed high impedance mode  
In an output circuit for outputting an output signal having a given potential level in response to a potential level of an input signal wherein the output signal is permitted to be in high...
5481208 Piecewisely-controlled tri-state output buffer  
A piecewisely-controlled tri-state output buffer has a signal buffer portion, an output falling-edge detector capable of generating a falling-edge control signal, an output rising-edge detector...
5471150 Buffer with high and low speed input buffers  
An input buffer includes a low-speed input buffer for buffering an input signal at the time of low-speed operation, a high-speed input buffer being controlled by the low-speed input buffer, for...
5463331 Programmable slew rate CMOS buffer and transmission line driver with temperature compensation  
A driver for providing binary signals from a data system to a transmission line is disclosed. The driver includes a first field-effect transistor (FET) coupled between an output node and ground...
5457407 Binary weighted reference circuit for a variable impedance output buffer  
An output buffer comprises a reference circuit having a plurality of reference transistors connected in parallel to each other and a output driver circuit having a corresponding plurality of...
5457433 Low-power inverter for crystal oscillator buffer or the like  
A low-power inverter (53) reduces power consumption over known inverter designs and is especially well-adapted for serving as a buffer in a Pierce crystal oscillator with a large load capacitance....
5444392 CMOS input stage  
A CMOS input stage for operation with a supply voltage selectively having a first value or a second higher value, includes a supply voltage terminal selectively receiving a first value or a second...
5438277 Ground bounce isolated output buffer  
An output buffer circuit for limiting ground bounce or output signal ringing. The output buffer utilizes two pull down transistors connected to two separate grounds as well as two pull up...
5436578 CMOS output pad driver with variable drive currents ESD protection and improved leakage current behavior  
A configurable circuit for driving an integrated circuit output pad includes two differently-sized arrays of p-channel FETs and two arrays of differently-sized n-channel FETs for driving the pad....
5430389 Output circuit with a current injection circuit including a reference voltage generator  
An output circuit and a bus buffer semiconductor LSI circuit which have functions of high speed and low power consumption while suppressing generation of undershoot and ringing in an output...
5389834 Output buffer circuit having a DC driver and an AC driver  
This invention discloses a signal output circuit including DC and AC buffers having output nodes commonly connected to a signal output terminal, and an AC buffer control circuit for driving the AC...
5387824 Variable drive output buffer circuit  
A variable drive output buffer circuit for use to drive memory address lines, or the like, in a computer system has the drive output connected in parallel to a group of output buffer drive...
5382847 Output buffer circuits including voltage compensation  
Disclosed is an output buffer circuit for allowing a reduction in overshoot and undershoot without a decrease in output speed of an output signal. This output buffer circuit includes a PMOS...
5369317 Circuit and method for controlling the potential of a digit line and in limiting said potential to a maximum value  
The invention is a circuit and method for controlling a high potential at a significant node by controlling the potential at a control input to an electrical device in electrical communication...
5287527 Logical signal output drivers for integrated circuit interconnection  
Disclosed is a logic output signal generating integrated circuit having a plurality of output drivers connected in parallel between a power bus and a ground bus. Each output driver has a pull up...
5237221 On-chip pull-up circuit which may be selectively disabled  
An on-chip pull-up which can be selectively enabled/disabled comprises a pull-up transistor (e.g., an FET) connected between the line to be pulled up/down and a bias voltage (e.g., a positive...
5231311 Digital output buffer and method with slew rate control and reduced crowbar current  
A buffer characterized by a pull-up network and a pull-down network which are both coupled between an input and an output of the buffer. Each of the networks include a number of switch elements...
5220216 Programmable driving power of a CMOS gate  
A CMOS gate is provided which has a programmable driving power characteristic so that its propagation delay time can be varied by digital select control signals (S1-Sm). The CMOS gate includes a...
5220209 Edge rate controlled output buffer circuit with controlled charge storage  
An edge controlled output buffer circuit reduces the amplitude of power rail noise while maintaining high switching speed by controlled storage and release of charge at the output using new charge...
5216289 Asynchronous reset scheme for ultra-low noise port tri-state output driver circuit  
A circuit for providing digital output signals carrying large amounts of currents without generating large transients at an output terminal connected to a load comprising apparatus for providing...
5216292 Pullup resistance control input circuit and output circuit  
In order to obtain an output circuit having pullup resistance which feeds no through current to a CMOS inverter even if output impedance of a front stage circuit is in an extremely high state, an...
5216300 Output buffer for semiconductor integrated circuit  
An output buffer of a semiconductor integrated circuit, including a P channel MOS transistor connected between first power source and an output terminal and a first N channel MOS transistor...
5212801 Apparatus for responding to completion of each transition of a driver output signal for damping noise by increasing driver output impedance  
An apparatus for controlling digital driver signals to accommodate a host system comprising a driver control circuit for generating a plurality of first stage gating signals in response to a data...
5208492 Output buffer user-programmable to function as CMOS output driver or open-drain output driver  
The improved CMOS output circuit has an enhancement-type PMOS and an enhancement-type NMOS connected in order between a power supply line and a reference potential line and that has the junction...
5206545 Method and apparatus for providing output contention relief for digital buffers  
A digital output buffer including a driver capable of driving an output signal up to a maximum drive level and a driver controller responsive to contention at the driver's output and operative to...
5204558 Output buffer circuit and method of operation thereof with reduced power consumption  
An output buffer circuit comprises a P channel MOS transistor connected between a power supply terminal and an output terminal, an N channel MOS transistor connected between a ground terminal and...
5200653 Tristate output gate structure particularly for CMOS integrated circuits  
The tristate output gate structure particularly for CMOS integrated circuits, comprises an enable terminal receiving an enable signal and an input terminal receiving an input signal, which...
5192879 MOS transistor output circuit  
An MOS transistor output circuit includes a parallel combination of first and second circuits including transistors of different output characteristics in either or both of paths between an output...
5192881 Circuit which reduces noise caused by high current outputs  
Circuitry within a device provides an output signal to an output pad of the device. One of a plurality of current levels is selected. When a first current level is selected, the circuitry...
5192883 Interface circuit for semiconductor memory device  
Disclosure herein is an interface circuit for a semiconductor memory device, which is so structured that, when a control signal (VBC) is supplied to a control signal input end, a transistor (2)...
5191244 N-channel pull-up transistor with reduced body effect  
A CMOS output buffer circuit employing an N-channel pull-up transistor with reduced body effect includes an N-channel pull-up transistor (N2), an N-channel coupling transistor (N1), and an...
5184033 Regulated BiCMOS output buffer  
A regulated BiCMOS output buffer (34) regulates a logic high voltage of an output signal to improve interfacing to loads such as 3.3 volt integrated circuits. The output buffer (34) provides a...
5177573 Semiconductor integrated circuit device  
A semiconductor memory device changeable in word organization has a plurality of input/output terminals and a plurality of input terminals. Each of the plurality of input/output terminals and the...
5175445 MOS type input circuit  
The source-drain paths of p-channel first and second MOSFETs are connected in series between a node, to which a high-potential power source voltage is supplied, and a signal output node. The...
5168176 Apparatus and method to prevent the unsettling of a quiescent, low output channel caused by ground bounce induced by neighboring output channels  
A method of controlling the ill-effects of ground bounce in a CMOS device, according to the present invention, comprises increasing the impedance between (1) the output line of a quiescent channel...
5166555 Drive circuit comprising a subsidiary drive circuit  
In a driving circuit supplied with an input signal having one of logic one and zero levels and producing an output signal through an output terminal to drive a load circuit connected to the output...
5150186 CMOS output pull-up driver  
A CMOS integrated circuit output terminal driver subcircuit (60) provides quick response at an output terminal (56) of an integrated circuit (50) while preventing reverse current leakage when an...
5149991 Ground bounce blocking output buffer circuit  
An output buffer circuit incorporates a ground bounce blocking circuit which blocks transfer of ground bounce pulses from the output ground lead (GND,PGND) to the output (VOUT) for protecting...
5148056 Output buffer circuit  
An output buffer circuit is disclosed that has optimized ground bounce characteristics while maintaining low propagation delay. The output buffer may be incorporated within an integrated circuit...
5140194 Driver circuit apparatus with means for reducing output ringing  
In a driver circuit, two P-channel MOS transistors are connected in parallel between a supply terminal and an output terminal, and two P-channel MOS transistors are connected in parallel between a...
5124585 Pulsed bootstrapping output buffer and associated method  
An output buffer circuit is provided for use with a first external voltage which provides voltage at a first level, the output buffer circuit comprising: an output terminal; a second voltage...
5122690 Interface circuits including driver circuits with switching noise reduction  
An interface circuit includes a generator for driving an interface signal to a receiver which produces an output signal in response thereto. The generator (or driver) includes a pair of relatively...
5121000 Edge-rate feedback CMOS output buffer circuits  
A CMOS output buffer circuit for providing an output signal at an output terminal which has a significant reduction in ground bounce over processing and power supply variations includes an output...