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| Number | Title | Issue Date |
| 7417464 | Bi-directional signal transmission system A bi-directional signal transmission system including, a first bi-directional signal path having circuitry adapted to generate a logic high level on said first path, one or more first stations connected to the first bi-directional signal path adapted to monitor a lo... | 08/26/2008 |
| 7408384 | Drive circuit of computer system for driving a mode indicator A drive circuit of a computer system is for driving a mode indicator. The computer system includes a first port and a second port. The mode indicator includes a first receiving end and a second receiving end. The drive circuit includes a first input end connected to... | 08/05/2008 |
| 7362146 | Large supply range differential line driver A differential transmission line driver with supplemental current sources that overcome switching anomalies and EMU issues when the logic state of the driver is switching. During a logic transition, a current source, that is directed to the output of the driver, may... | 04/22/2008 |
| 7348803 | Bi-directional bus buffer A bi-directional bus buffer for applications using the I2C and SMBus, or other bus systems operating on similar principles, able to extend the bus load limit by buffering both the SCL and SDA (clock and data) lines, allowing capacitive loads of up to the limit of 40... | 03/25/2008 |
| 7321242 | Integrated circuit with breakdown voltage multiplier An apparatus and method for driving an output signal in a high speed integrated circuit. The apparatus and methods enable the output voltage swing from the driver to exceed the breakdown voltage of any individual element in the output driver. A high speed driver can... | 01/22/2008 |
| 7307456 | Automatic status assignment logic circuit apparatus for bay devices In accordance with the present invention, the circuit apparatus has a first and a second connection point each for respectively connecting to the first bay and second bay for communicating with them to determine which device in the bays is the master device. The cir... | 12/11/2007 |
| 7301294 | Motor speed control integrated circuit A motor speed control integrated circuit which controls a rotational speed of a motor by controlling the amount of current flowing through a drive coil of the motor. The integrated circuit comprises a first input terminal to have an analog speed-specifying signal in... | 11/27/2007 |
| 7256615 | Configurable high/low side driver using a low-side FET pre-driver A high-side driver circuit for driving a load, including a low-side driver IC having a drive output and a feedback input, a first transistor coupled to the drive output, and a second transistor coupled between a power source and the load. The second transistor is co... | 08/14/2007 |
| 7242249 | Peaking transmission line receiver for logic signals A receiver circuit is configured as a frequency compensated differential amplifier having one input coupled to the output of a transmission line to receive a transmitted signal and the second input coupled to a reference voltage. The differential amplifier has a hig... | 07/10/2007 |
| 7218150 | Semiconductor integrated circuit device and differential small-amplitude data transmission apparatus An output driving circuit has a first and second differential output nodes connected to a first and second external output terminals, respectively. A capacitance connection circuit is connected between the first and second differential output nodes. The capacitance ... | 05/15/2007 |
| 7196549 | Interface system and method therefor In one embodiment, a differential transistor pair of an ECL differential amplifier is formed on two different semiconductor die. ... | 03/27/2007 |
| 7180310 | Amplitude varying driver circuit and test apparatus There is provided an amplitude varying driver circuit operable to output an output signal, which is an amplified input signal being supplied. The amplitude varying driver circuit includes: a plurality of differential amplifiers provided in parallel with one another,... | 02/20/2007 |
| 7173474 | Load-generated drive, no quiescent current, techniques and circuits for high speed switching of transistors Techniques and circuits for high speed switching of transistors are provided. These techniques and circuits switch an output device while varying the drive current to the output device in proportion to the output current through the output device. In addition, these... | 02/06/2007 |
| 7123054 | Semiconductor integrated circuit device having an ESD protection unit A semiconductor integrated circuit device includes a semiconductor integrated circuit formed in a semiconductor chip, and a switching element that is formed in the semiconductor chip and has a current path whose one end and the other end are both connected to the se... | 10/17/2006 |
| 7106105 | High voltage integrated circuit driver with a high voltage PMOS bootstrap diode emulator A high voltage circuit driver includes high and low side driver cells to drive a high and a low side power MOSFET, a bootstrap circuit to energize the high side driver cell, a high voltage PMOS transistor (HVPMOS) between a voltage source and the bootstrap circuit, ... | 09/12/2006 |
| 7098684 | High speed switch A high speed switch. The novel switch includes an input circuit having a transistor Q1 for receiving an input signal, a first mechanism for providing a path from an output of Q1 to an output terminal, and a second mechanism for receiving a control sign... | 08/29/2006 |
| 7088141 | Multi-threshold complementary metal-oxide semiconductor (MTCMOS) bus circuit and method for reducing bus power consumption via pulsed standby switching A multi-threshold complementary metal-oxide semiconductor (MTCMO) bus circuit reduces bus power consumption via a reduced circuit leakage standby and pulsed control of standby mode so that the advantages of MTCMOS repeater design are realized in dynamic operation. A... | 08/08/2006 |
| 7081774 | Circuit having source follower and semiconductor device having the circuit When a potential of a power supply line varies according to a flowing current, the gate-source voltage Vgs of a transistor also varies, leading to variations in the constant current between each source follower. In order to solve this problem, a potential Vb of the ... | 07/25/2006 |
| 7002326 | Method of modulating current regulation control loop's current magnitude from a second control signal The present invention provides current regulation. The circuit includes a current regulation loop that includes a second control signal that is used to adjust the magnitude of the regulated current. The second control signal provides a signal that regulates the amou... | 02/21/2006 |
| 6882180 | Switching aid circuit for a logic circuit The invention concerns a switching circuit (20) adapted to generate a pulse when there occurs a rising edge of a signal applied on an input terminal (CTRL), comprising: a first NPN type bipolar transistor (TN2) whereof the transmitter is connected to t... | 04/19/2005 |
| 6847232 | Interchangeable CML/LVDS data transmission circuit A system and method is described for a driver circuit used for high speed data transmission in LVDS and CML transceiver device applications. The transceivers are intended to receive a low voltage differential input signal and interchangeably drive a standard LVDS lo... | 01/25/2005 |
| 6812744 | Integrated circuit beta compensator for external interface circuitry An apparatus for interfacing an integrated circuit with external circuitry includes a transistor having an emitter coupled to a node for receiving a control current (IP) from the integrated circuit. A beta compensator disposed within the integrated circuit provides ... | 11/02/2004 |
| 6791359 | Electronic structure for passing signals across voltage differences An electronic structure for passing signals across voltage differences includes a signal bus segment that includes at least one circuit element. Circuitry connected to the signal bus segment is operatively connected to a voltage source. Signal bus segments and the a... | 09/14/2004 |
| 6552577 | Differential emitter-coupled logic buffer having reduced power dissipation A logic buffer includes a logic gate having at least two input terminals and two output nodes, a plurality of output terminals, each having a capacitance associated therewith and a pull-up circuit interconnected between each output node and the plurality ... | 04/22/2003 |
| 6538472 | Interface circuitry Interface circuitry for linking an automobile diagnostic scanner to the electronic control unit of an automobile. The disclosed circuitry provides a lower cost, reduced board space solution for an universal scan tool interface circuitry.... | 03/25/2003 |
| 6518789 | Circuit configuration for converting logic levels The circuit configuration for converting logic levels has a bipolar input stage and a CMOS output stage. The bipolar input stage is equipped to process ECL and CML logic levels. The CMOS-logic output stage is equipped to supply trailing CMOS gates having ... | 02/11/2003 |
| 6512393 | Method and apparatus for non-linear termination of a transmission line An active termination circuit for clamping a signal on a transmission line in an electronic device is described. The active termination circuit is configured to clamp the signal on the transmission line to one of a first reference voltage level and a seco... | 01/28/2003 |
| 6459396 | Electric current switch circuit and D/A converter using same An electric current switch circuit in accordance with the present invention is arranged so that an output of an IIL logic circuit is connected with the base of the first transistor of NPN type that switches ON or OFF the electric current. The first consta... | 10/01/2002 |
| 6456108 | Input circuit for an output stage Described is a control circuit for an output stage for suppressing electrical and electromagnetic interference having a signal input (I), a signal output (O), and a ground terminal, two switch stages (1; 2) which are connected to the signal input (I) and ... | 09/24/2002 |
| 6456119 | Decoding apparatus A decoding apparatus for transmitting a high voltage signal includes a final decoder for switchably transmitting a transmission signal. The final decoder has a switching device that has at least one depletion-mode-type field effect transistor and/or field... | 09/24/2002 |
| 6445221 | Input driver for a differential folder employing a static reference ladder An input driver for use with a differential folder in a flash A/D converter having a static ladder that provides an array of reference voltages and a method of operation thereof. The input driver includes a differential signal driver, coupled to an AC inp... | 09/03/2002 |
| 6441645 | Low voltage bipolar drive circuits A bipolar drive circuit comprises a differential or single-ended current mirror with signal inputs and outputs connected via resistors to a low voltage supply, e.g. 1.5 volts. A signal output voltage swing is determined and stabilized by a compensation ci... | 08/27/2002 |
| 6400184 | Transistor output circuit A transistor output circuit featuring a low power consumption, high speed and stabilized operation is realized. The transistor output circuit of the invention is comprised of: transistors Q59 and Q57 having respective bases supplied with input signals in ... | 06/04/2002 |
| 6392452 | Input buffer circuit for RF phase-locked loops An input buffer circuit includes a first amplifier having low load impedance and a second amplifier having high load impedance. The output signals of the input buffer circuit have wide bandwidth, although the input buffer circuit has two stage amplifiers.... | 05/21/2002 |
| 6377088 | Sharp transition push-pull drive circuit with switching signal input circuit A sharp transition is achieved between pushing and pulling an output current by simultaneously diverting the bias current from a series stacked transistor circuit and from the base of a sink transistor. After the series stacked transistor circuit is kept ... | 04/23/2002 |
| 6377072 | Interface circuit and signal transmission method Two LSIs are driven with different power supply voltages. An interface circuit which outputs a constant current corresponding to a logic signal to a first LSI and stopping the output of the constant current is provided in the first LSI. An interface circu... | 04/23/2002 |
| 6362678 | Circuit for reducing rise/fall times for high speed transistor logic An improved output driver for HSTL includes a bias control transistor to absorb current leaking through the base-collector capacitance of the drive transistor and maintain the base voltage on the drive transistor. The bias control transistor is biased by ... | 03/26/2002 |
| 6266800 | System and method for eliminating effects of parasitic bipolar transistor action in dynamic logic using setup time determination A method and apparatus of eliminating the unwanted effects of parasitic bipolar discharge in dynamic logic circuits including silicon-on-insulator (SOI) field effect transistors (FET) by measuring setup time in a logic partition of a dynamic logic circuit... | 07/24/2001 |
| 6249148 | Low power variable base drive circuit A variable base drive output circuit that is operational for low-potential power supplies. The output circuit includes a current regulating branch and a base drive branch. A control transistor is logically coupled to an enable signal and an input signal t... | 06/19/2001 |
| 6204693 | Apparatus for regulating the flow of current through a load An apparatus is described for regulating the flow of current through a load in which the flow of current is monitored in the form of a reference voltage by an analog input and a digital input of an arithmetic and logic unit. The voltage measured at the an... | 03/20/2001 |
