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6300806 Signal generator  
A function generator includes a switching stage for forming a defined signal waveform. The switching stage includes switching transistors that are turned on in a predetermined sequence of...
6292035 Signal transmission device  
In a signal transmission device, when the switching transistors constituting its output stage are turned on or off, those transistors into which a current has thus far been flowing from the...
6289447 Topology dependent compensation to improve performance of self-compensated components including processors based on physical relationship with other system components  
A method and apparatus for compensating system components based on system topology. The present invention provides a method and apparatus for performance optimization through topology dependent...
6281729 Output driver with improved slew rate control  
A driver may be provided which controls the output slew rate a driver which includes within the driver a slew rate control circuit. Accordingly, a desired output slew rate can be advantageously...
6281709 Fuse option for multiple logic families on the same die  
A chip's interface is selected by using a fuse option coupled between integrated circuitry on the chip and logic circuitry. Fuse options correspond to antifuses or fuses. In one embodiment, a...
6281708 Tri-state bus amplifier-accelerator  
The present invention provides a centralized amplifier-accelerator a tri-state bus. The centralized amplifier-accelerator utilizes the module drivers as pre-drivers to the amplifier-accelerator....
6278306 Method for an output driver with improved slew rate control  
A method for a driver may be provided which controls the output slew rate of a driver which includes within the driver an impedance control and a slew rate circuit. Accordingly, a desired output...
6268750 Flattened resistance response for an electrical output driver  
A method and circuit for flattening the output resistance response on a signal pad of an integrated circuit is presented. Impedance matching is accomplished using pull-up and pull-down FET arrays....
6265915 Output edge control circuit  
The output edge control circuit includes: a high side transistor 27coupled to an output node 44; a first low side transistor 20 coupled to the output node 44; a second low side transistor 24...
6265913 Load driving circuits having adjustable output drive capability  
Load driving circuits are adjusted to drive loads with fewer or more pull-down devices by sensing the load electrically coupled to the load driving circuit. In particular, capacitance of the load...
6265892 Low noise output buffer  
A low noise output buffer to simultaneously reduce switching noise and output signal ringing for output ringing and maintain DC current. A temporary and a steady-state output buffers are supplied...
6265914 Predriver for high frequency data transceiver  
A predriver for driving an output data buffer at high frequencies includes a data input, a data output, a first voltage pull-up circuit, a first voltage pull-down circuit, a delay circuit and a...
6252418 Reduced area active above-supply and below-ground noise suppression circuits  
A noise suppression circuit for suppressing noises above and below reference voltages is provided. The noise suppression circuit for suppressing noises includes a clamping transistor, a feedback...
6242941 Reducing I/O noise when leaving programming mode  
An integrated circuit contains circuitry to operate in such a fashion to reduce output noise when switching output circuits from a programming mode to a user mode. In an implementation, the...
6242942 Integrated circuit output buffers having feedback switches therein for reducing simultaneous switching noise and improving impedance matching characteristics  
Integrated circuit output buffers include pull-down an pull-up circuits and a control circuit that utilizes a preferred feedback circuit to facilitate a reduction in simultaneous-switching noise...
6239617 Mixed voltage output driver with automatic impedance adjustment  
A mixed voltage output driver includes an output sensing circuit that senses an output voltage at an output terminal and generates a voltage signal that corresponds to a voltage level at the...
6236237 Output buffer predriver with edge compensation  
An output buffer with feedback to a predriver circuit such that the effective size of the predriver buffers are momentarily adjusted to favor a particular transition (i.e., low-to-high or...
6236245 Output pre-driver for reducing totem pole current  
An output driver to reduce totem pole current is provided. The output driver comprises a first delay element outputting a delayed first driver signal, and a first selection unit receiving as an...
6229355 Switching device for suppressing a rush current  
A switching device includes a phase controlling circuit (801) which shifts and outputs a phase of a command signal, and a plurality of switching units (110) connected in parallel between a power...
6225819 Transmission line impedance matching output buffer  
An output buffer includes a continuously variable output impedance proportional to the load transmission line impedance. The buffer includes an output stage, such as a pullup/pulldown transistor,...
6222389 Assisted gunning transceiver logic (AGTL) bus driver  
A driver for a signal line provides a desired pull-up voltage, different from a natural supply voltage, and desired terminating impedance. The driver forms a controllable split terminator voltage...
6222390 Method and circuit for recycling charge  
Briefly, in accordance with one embodiment of the invention, an integrated circuit includes: two transistors coupled together in the integrated circuit so that upon the application of...
6218863 Dual mode input/output interface circuit  
A dual mode I/O interface circuit compatible with either GTL logic signals or traditional CMOS logic signals comprises a connection node with a differential sense amplifier having one input...
6208168 Output driver circuits having programmable pull-up and pull-down capability for driving variable loads  
Output drivers preferably contain a plurality of driver circuits therein that are commonly connected to an output line to be driven and can be selectively enabled or disabled to increase or...
6201416 Field effect transistor logic circuit with reduced power consumption  
There is disclosed a field effect transistor logic circuit having an output terminal to be connected to a gate of an input field effect transistor in a next stage field effect transistor logic...
6194913 Output circuit for digital integrated circuit devices  
An output circuit for digital integrated circuit devices is presented, comprising a driving device with adjustable drive capability for generating an output pulse (OS), means (SENS) for monitoring...
6188254 Data output buffer with high drivability in semiconductor device  
Disclosed is a data output buffer improving the drivability, by increasing the power supply voltage and keeping the power supply voltage constant, without being modification and increase of the...
6188244 Hysteresis input buffer  
An hysteresis input buffer includes a first CMOS inverter generating a node signal, a second CMOS inverter coupled to the first CMOS inverter, inverting the node signal from the first CMOS...
6188237 Impedance matching circuit, high speed semiconductor integrated circuit employing the same and computer system employing the integrated circuit  
A high speed impedance matching circuit suitable for use in high speed semiconductor integrated circuits matches the output impedance of a semiconductor device to the impedance of other devices...
6181156 Noise suppression circuits for suppressing noises above and below reference voltages  
A noise suppression circuit for suppressing noises above and below reference voltages is disclosed. The noise suppression circuit for suppressing noises includes a means for generating a...
6177809 Redundant input/output driver circuit  
A first, "known good" reference off-chip driver circuit actuated by an initial logic program (IPL) input signal has an output lead connected as one of the inputs to a comparator circuit for...
6177819 Integrated circuit driver with adjustable trip point  
The invention provides an IC driver circuit having an adjustable trip point. The driver circuit automatically adjusts the trip point of the circuit based on the state of the output signal (and...
6177810 Adjustable strength driver circuit and method of adjustment  
An output buffer, in accordance with the present invention includes a first driver circuit for coupling a first voltage to an output when the first driver circuit is turned on, and a second driver...
6175598 Output noise control scheme for multiple I/O's  
An output noise control circuit with significantly reduced power/ground bounce characteristics when multiple outputs thereof are being simultaneously switched is provided. The output noise control...
6172516 Output buffering apparatus and method  
An output buffer capable of reducing the noise and distortion of buffered output data while operating at high speed, and a buffering method performed in the output buffer are provided. An output...
6172528 Charge sharing circuit for fanout buffer  
A deskew circuit for synchronizing output signals from a fanout buffer. The circuit includes one capacitive element coupled to each of the buffer's output nodes. Each capacitive element is also...
6169421 Complementary metal-oxide semiconductor buffer  
A CMOS buffer for interfacing TTL-standard signals and capable of driving a high capacitance load such as a transmission line with low switching noise and low power consumption. The CMOS buffer...
6166563 Method and apparatus for dual mode output buffer impedance compensation  
A method and circuit for programming an output buffer having a first output driver for producing a first signaling level with a first programmable strength and a second output driver for producing...
6160416 Full CMOS slew rate controlled input/output buffer  
An output buffer circuit including an input node, an output stage, an output node that is connected to the output stage, and a control circuit that controls voltage variations during the rising...
6147513 Method and circuit for logic input buffer  
A novel logic input buffer having independent DC input trip points (e.g., VIL and VIH), reduced cross current during signal transitions, shorter propagation delay, and improved noise performance....
6137317 CMOS driver  
A CMOS input/output driver having constant output impedance, the driver comprising a drive pMOSFET and a drive nMOSFET for driving an output node HIGH and LOW, an pMOSFET having a drain coupled to...
6133757 High-speed and low-noise output buffer  
A high-speed and low-noise output buffer with a slew control function in coordination with a GTL+ signal specification according to the invention. In the output buffer, general and speed driving...
6133749 Variable impedance output driver circuit using analog biases to match driver output impedance to load input impedance  
A programmable variable impedance output driver circuit uses analog biases to match driver output impedance to load input impedance. A current mirror is used to obtain a measurement of an external...
6133767 Digital driver circuit for an integrated circuit  
An integrated driver circuit for driving different capacitive loads, which includes a setting element. The setting element develops a setting signal S for a given numerical measure signal M. The...
6130541 Adaptive driver with capacitive load sensing and method of operation  
An adaptive output driver includes circuitry for sensing the capacitive loading of a driver circuit and then adjusting the drive output so that the output signal possess a desired slew rate. In...
6127862 Programmable impedance circuit  
The programmable impedance circuit of the present invention includes a dummy resistance element dummy buffer means including a plurality of buffer portions, each buffer portion having a serial...
6124747 Output buffer circuit capable of controlling through rate  
An output buffer circuit capable of controlling a through rate at a constant rate. Each decision circuit of a plurality of decision circuits (11-13, 18-20) receives a voltage potential from an...
6124733 Input buffer providing virtual hysteresis  
An input buffer includes a first CMOS inverter (400) made up of a PMOS transistor (602) connecting Vdd to the buffer output and an NMOS transistor (604) connecting the buffer output to Vss. NMOS...
6118325 Semiconductor device capable of preventing ringing of output waveform  
A plurality of output transistors for an output buffer of a semiconductor device are provided in parallel. Potentials to be applied to gates of output transistors are set to different levels upon...
6118301 High voltage tolerant and compliant driver circuit  
An input/output driver circuit which provides a buffer interface between a functional digital circuit and a common bus for other digital circuits achieves high levels of voltage tolerance and...