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6466074 Low skew minimized clock splitter  
A clock splitter device for forming a clock/inverted clock signal pair. The input clock signal is sent through an initial buffer stage and applied to two parts of a second stage. The second stage...
6466487 Semiconductor device with impedance controllable output buffer  
A semiconductor device carries out programmable impedance control on an output buffer. The semiconductor device has an internal circuit for carrying out a predetermined operation and the output...
6462597 Trip-point adjustment and delay chain circuits  
Circuit techniques provide different trip points for a rising-edge and for a falling-edge input to a logic gate. Adjustment of the gate trip point for a rising-edge input may be independently...
6448812 Pull up/pull down logic for holding a defined value during power down mode  
A circuit and a method for setting a digital potential at an integrated circuit output pin in which pull up/pull down circuitry holds a defined value at the output pin during the power down of the...
6445212 High-speed, low-noise, impedance-matched output buffer circuit  
A programmable multi-configuration output buffer circuit having an input port terminal and an output port terminal. The output buffer circuit includes an output buffer stage having no delay unit...
6441653 CMOS output driver with slew rate control  
A CMOS output driver with a DC feedback circuit architecture that changes the output impedance of the driving transistors as the output voltage transition progresses. The output voltage slew rate...
6441644 Logic device for outputting a signal within a through rate range  
When a level of an input signal is suddenly changed to a low level (or a high level), a driving p-channel MOS transistor of a weak driving performance (or a driving n-channel MOS transistor of a...
6437600 Adjustable output driver circuit  
An adjustable integrated circuit output driver circuit is described which has a push-pull output circuit comprised of a pullup and pulldown transistor. A series of parallel transistors are...
6433618 Variable power device with selective threshold control  
A variable power device circuit includes a plurality of devices for driving a load. Each of the devices has a body, which is electrically isolated from the substrate. All of the devices are...
6429684 Circuit having dynamic threshold voltage  
A body-tied-to-drain transistor having significantly reduced gate delay and being particularly appropriate for large drivers where a series of inverters is used. The basic configuration ties the...
6426651 Method and apparatus for improving the performance of buffers using a translator circuit  
According to one aspect of the invention, a method is provided in which an input signal is received at a first node of a buffer. The input signal is strengthened by a factor that corresponds to a...
6424174 Low leakage logic gates  
Disclosed is a static CMOS circuit having an input and an output, comprising: a pass gate switch fabricated from thick oxide devices coupled between the input and a fast CMOS circuit fabricated...
6420899 Dynamic impedance matched driver for improved slew rate and glitch termination  
The impedance of a driver driving a load on the other end of a transmission line is dynamically changed to improve slew rate and glitch termination. The driver is controlled to have a low...
6417692 Programmable I/O cells with multiple drivers  
A programmable input/output cell (I/O cell) for use with integrated circuits, and in particular programmable logic devices, is presented comprising input receiver circuitry, output driver...
6414523 Pull-up method and apparatus for a universal serial bus output driver  
Disclosed is an output driver for driving a universal serial bus. The driver includes a first pull-up circuit, a second pull-up circuit, and a crossover detection circuit. The driver uses the...
6411127 Multi-level bonding option circuit  
The present invention relates to a bonding option circuit and a multi-level buffer that generates a plurality of selection signals from a single selective condition applied to a bonding pad to...
6384668 Charge pump circuit  
The present invention provides a charge pump circuit capable of operating at a high speed with a low power source voltage and increasing the synchronization processing speed. The charge pump...
6384654 High speed circuit of particular utility in delay and phase locked loops  
A delay stage for use in a voltage-controlled delay chain of a delay locked loop or in a voltage-controlled ring oscillator of a phase locked loop has pullup and pulldown transistors driven by a...
6384621 Programmable transmission line impedance matching circuit  
An apparatus comprising a first circuit, a second circuit, and an output circuit. The first circuit may be configured to generate a first digital output in response to (i) a reference input and...
6384644 Output circuit with switching function  
An output circuit having a function of two or more external interfaces is disclosed. The disclosed output circuit has an input circuit generating an internal input signal in response to an...
6380769 Low voltage output drive circuit  
A trigger circuit (22) having a depletion mode n-type transistor (32) and a depletion mode p-type transistor (34) operate by having each gate thereof driven by an independent source. When both...
6380770 Low ground bounce and low power supply bounce output driver with dual, interlocked, asymmetric delay lines  
Ground bounce and power supply bounce are reduced in an output driver by utilizing a plurality of p-channel and n-channel driver transistors which are connected to an output pad, by insuring that...
6380758 Impedance control for wide range loaded signals using distributed methodology  
In one embodiment of the present invention, a compensation controller includes a counter, K driving circuits, K feedback circuits, and a state machine. The counter generates a compensation code....
6377089 Output driver  
An integrated circuit output driver provides high speed communication, such as between integrated circuits in spite of appreciable interconnection capacitance. The output driver reduces the...
6373287 Input/output control circuit and microcomputer  
An input/output control circuit includes an input/output terminal, a first and second transistors configuring a CMOS circuit, a third transistor for carrying out a pull-up operation, an input...
6366130 High speed low power data transfer scheme  
A data transfer arrangement. The data transfer arrangement includes two active pull up/active pull down bus drivers and a voltage precharge source. A differential bus is coupled to the bus drivers...
6366141 Semiconductor driver circuit utilizing substrate voltage control  
A semiconductor driver circuit includes a first inverter circuit that inverts an input voltage and supplies a first inverted voltage, and a second inverter circuit that inverts the first inverted...
6366139 Method for an output driver with improved impedance control  
A method may be provided which controls the output impedance of a driver which includes within the driver an impedance circuit and a slew rate control. Accordingly, a desired output slew rate and...
6366867 Method and apparatus for providing controllable compensation factors to a compensated driver circuit which may be used to perform testing of the structural integrity of the compensated driver circuit  
A method and apparatus for providing controllable compensation factors to a compensated driver circuit which may be used to perform testing of the structural integrity of the compensated driver...
6362656 Integrated circuit memory devices having programmable output driver circuits therein  
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...
6362664 Active pull-up circuit  
An active pull-up circuit for connection to an input pin that receives high and low logic level signals and a high voltage signal whose level is higher than the high logic level. The active...
6356102 Integrated circuit output buffers having control circuits therein that utilize output signal feedback to control pull-up and pull-down time intervals  
Integrated circuit output buffers include primary and secondary pull-down transistors and an output signal line electrically coupled to a drain of the primary pull-down transistor and a drain of...
6353345 Low cost half bridge driver integrated circuit with capability of using high threshold voltage DMOS  
A low cost half bridge driver IC fabricated in the process technology with a minimum or reduced number of masking steps to implement all the blocks and without the use of the low threshold voltage...
6353336 Electrical ID method for output driver  
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a first output signal in response to one or more first input signals. The second...
6351149 MOS transistor output circuit  
There is disclosed a MOS transistor output circuit capable of suppressing ringing and other noises and of operating at high speed under low power supply voltages. A signal corresponding to an...
6347850 Programmable buffer circuit  
A first buffer impedance value is established by electronically adjusting a first impedance between a first voltage source and a first reference point until the potential at the first reference...
6339351 Output driver with improved impedance control  
A driver may be provided which controls output impedance of a driver which includes within the driver an impedance circuit and slew rate control. Accordingly, a desired output slew rate and a...
6326802 On-die adaptive arrangements for continuous process, voltage and temperature compensation  
An impedance matching arrangement, including an adaptive circuit. The adaptive circuit includes a first adaptive portion allowing impedance matching according to a predetermined first weighting...
6326822 Apparatus and method for driving bus with low power consumption  
An apparatus for driving a bus with low power consumption, capable of reducing power consumption by reducing the width of the change in the level of a bus driving voltage transmitted through the...
6320409 CMOS majority circuit  
A majority circuit comprises CMOS circuits is adapted to prevent operation errors due to disagreement of conductance among the transistors of the circuits. Such a majority circuit can realize a...
6320407 Semiconductor circuit having output circuit whose slew rate can be adjusted, apparatus and method for automatically adjusting slew rate of output circuit in semiconductor circuit  
A high-level signal is sent to a mode control terminal, a pulse for slew-rate adjustment is sent to a replicated gate, and the slew rate at a measurement terminal is set to a desired value using a...
6320414 High-voltage level tolerant transistor circuit  
A high-voltage level tolerant transistor circuit, comprising a plurality of cascoded transistors, including a first transistor (T1) operatively connected to a high-voltage level node (3) and a...
6320433 Output driver  
One aspect of the invention is an integrated circuit (10,110) comprising a digital circuit operable to generate a first signal (21,111) and a driver circuit (20 and 30, 120 and 130) coupled to the...
6316957 Method for a dynamic termination logic driver with improved impedance control  
A method of controlling impedance of a driver capable of launching signals at a driving end of a transmission line and capable of terminating signals at the receiver end of the transmission line...
6313671 Low-power integrated circuit I/O buffer  
The present invention provides a buffer circuit that consumes little power. Specifically, the buffer circuit can operate at lower voltages (e.g., 3.3 V) and interface with other circuits that...
6313664 Load capacitance compensated buffer, apparatus and method thereof  
A primary driver is activated to drive an output signal in response to an input signal. A reference signal is generated in response to the input signal. The output signal is compared to the...
6313672 Over-voltage tolerant integrated circuit I/O buffer  
The present invention provides a buffer circuit that can tolerate over-voltage, and a method for protecting buffer circuits from over-voltage. Specifically, the buffer circuit can operate at lower...
6310494 Bus driver  
The invention relates to a bus driver having an inverter for driving a preferably clocked signal on a bus line. In the event of a capacitive coupling of the bus line to at least one neighboring...
6310496 Signal transition accelerating driver circuit for promptly driving bus line and bus driving system using the same  
A signal transition accelerating driver circuit for driving a signal line in the presence of an enable signal of a high level and to a potential level on the signal line for accelerating the...
6300798 Method and apparatus for controlling compensated buffers  
In accordance with one embodiment of the invention, a system includes an integrated circuit that has a compensation value generator. The compensation value generator processes multiple...