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7245155 Data output circuit with improved overvoltage/surge protection  
A data output circuit is composed of first and second differential MOS transistors, first and second cascade MOS transistors, first and second outputs, and first and second resistor elements. The...
7239185 Driver circuit connected to pulse shaping circuitry  
An integrated circuit driver includes an output stage having source drain paths of a PFET and NFET connected in series with each other across DC power supply terminals. A pair of inverters...
7233165 High speed driver for serial communications  
A differential output driver capable for selectively switching from an emphasis mode, a non-emphasis mode, and an idle state uses one pull-up device and two pull-down devices per output lead. The...
7227382 Transmit based equalization using a voltage mode driver  
A driver circuit. In one embodiment, the driver circuit includes a plurality of pull-up circuits and a plurality of pull-down circuits. The driver circuit also includes control logic that is...
7227376 Dynamic impedance compensation circuit and method  
An impedance compensation circuit generates per-group pull-up impedance information and per-group pull-down impedance information to calibrate a plurality of input/output pads and dynamically...
7224179 Apparatus for adjusting slew rate in semiconductor memory device and method therefor  
The present invention relates to an apparatus for adjusting a slew rate of a data signal outputted by a signal from an external circuit in a semiconductor memory device and a method therefor. The...
7221182 Open drain type output buffer  
The open-drain type output buffer includes a first driver and at least one of (1) at least one secondary driver and (2) at least one tertiary driver. The first driver selectively pulls an output...
7218145 Level conversion circuit  
An input circuit (a first transistor pair) that receives complementary input signals is connected to a latch circuit (a second transistor pair) that converts the amplitude of an input signal into...
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...
7215148 Programmable current output buffer  
A buffer for a programmable device has source current circuitry, sink current circuitry, one or more input nodes, one or more output nodes, and switch circuitry. The source current circuitry can...
7215144 Pre-emphasis driver with constant impedance  
An apparatus and method is disclosed for transmitting signals over a signal conductor using a precompensated driver that does not use a current source, and which drives the signal conductor with...
7215152 High performance adaptive load output buffer with fast switching of capacitive loads  
A high performance adaptive load output buffer with fast switching of capacitive loads includes a first set of series connected complementary cascode structures having a first output node at the...
7215151 Multi-stage light emitting diode driver circuit  
A multi-stage light emitting diode (LED) driver circuit is provided. The circuit includes a driver transistor coupled to an LED. The LED is coupled at a drain of the driver transistor and the...
7212035 Logic line driver system for providing an optimal driver characteristic  
A line driver for off-chip communication comprises multiple parallel stages each with separate inputs. The parallel stages each have a controlled impedance when driving the line driver output node...
7212038 Line driver for transmitting data  
A line driver (3) for transmitting data with high bit rates, in particular for wire-bound data transmission in the full-duplex process, comprises a differential pair with differential pair...
7202702 Output buffer slew rate control using clock signal  
A signal generated by circuitry for an output buffer is identified relative to a clock signal to control a slew rate of the circuitry for an output buffer.
7203243 Line driver with reduced power consumption  
A means for reducing the power consumption of the transmitter by storing the recent history of the transmitted data using a string of gates with taps from the string taken at points determined by...
7199605 Method and apparatus for low capacitance, high output impedance driver  
An apparatus is described having a feedback loop. The feedback loop has an output that approaches a steady state as a data line voltage approaches a reference voltage. The apparatus also includes...
7187206 Power savings in serial link transmitters  
Aspects of saving power in a serial link transmitter are described. The aspects include providing a parallel arrangement of segments, each segment comprising prebuffer and output stage circuitry...
7187196 Low rise/fall skewed input buffer compensating process variation  
Buffer circuits and techniques that reduce skew between rising and falling times of output data as process conditions vary are provided. One or more process-dependent current sources may be...
7187207 Leakage balancing transistor for jitter reduction in CML to CMOS converters  
The CML (current mode logic) to CMOS converter with a leakage balancing transistor for jitter reduction includes: a differential input stage; an output stage having a first branch coupled to a...
7187197 Transmission line driver  
A transmission line driver with slew rate control includes high and low side ramp generators for generating charge and discharge ramp signals, respectively, which are input to respective...
7183816 Circuit and method for switching an electrical load on after a delay  
A circuit (S1) for switching on an electrical load which can be connected downstream from the circuit comprises a first electronic switching means (T1) in a first path, and a second electronic...
7183803 Input device for a semiconductor device  
Disclosed is an input device for a semiconductor device that optimizes the performance characteristic of the semiconductor device using off-chip driver information. The input device includes at...
7170318 Impedance controller and impedance control method  
An impedance controller includes a current mirror section to generate an impedance current. At least one detector includes a transistor array and an impedance corresponding to the impedance...
7167020 Apparatus and method of tuning a digitally controlled input/output driver  
Apparatus and method of tuning a digitally controlled input/output (I/O) driver of an integrated circuit for parameter variation compensation, a bus impedance of the I/O driver being controlled by...
7161379 Shunted current reduction  
One disclosed method comprises drawing current from a termination voltage supply and through a termination voltage delivery network by termination circuitry in response to a first signal on one or...
7161376 Variable impedence output buffer  
An output buffer for a semiconductor memory device and other semiconductor devices includes a feedback circuit to dynamically control the output impedance of the output buffer in response to a...
7154981 Termination circuit  
A termination circuit for terminating a transmission line comprises a resistance unit which is formed by connecting a P-channel type MOS transistor and an N-channel type MOS transistor in...
7151392 Output driver circuit  
The present invention relates to an output driver circuit for a semiconductor memory device, in particular, a memory device using a DDR II concept or a concept similar thereto, which can reduce a...
7149271 Driver driving method, driver circuit, transmission method using driver, and control circuit  
A driver circuit 10 comprising a driver unit 30 and a driver control unit 20 for controlling a driver by comparing present data of an input signal with previous data, wherein the driver unit 30...
7142017 High-voltage-tolerant feedback coupled I/O buffer  
An input/output buffer comprises an input/output pad operable to receive an input signal and transmit an output signal, an output driver coupled to the input/output pad, an input path comprising...
7138830 Supply enabled optimization output buffer  
An output buffer having a first pull-up transistor and a first pull-down transistor connected in series between two nodes of a power supply, their common connection node being connected to the...
7135884 Voltage mode transceiver having programmable voltage swing and external reference-based calibration  
An integrated device includes a voltage mode transmit driver for matching an output impedance to an output transmission line based on a binary code, an input termination module configured for...
7132857 High speed receiver with wide input voltage range  
A receiver circuit (12) includes a first gate (24) that receives an input signal (VIN0, VIN1) and has an output (32, 34) for providing an output signal (VG0, VG1). A shifting circuit (20) is...
7133318 Output driver capable of controlling slew rate of output signal according to operating frequency information or CAS latency information  
An output driver effectively controls the slew rate of an output signal according to CAS latency information including frequency information of an operating clock signal or according to frequency...
7126378 High speed signaling system with adaptive transmit pre-emphasis  
A signaling system having first and second sampling circuits and an output driver circuit. The first sampling circuit samples a first signal generated by the output driver circuit to determine...
7126389 Method and apparatus for an output buffer with dynamic impedance control  
A method and apparatus for an output buffer with dynamic impedance control have been disclosed.
7126369 Transceiver providing high speed transmission signal using shared resources and reduced area  
A transceiver provides a high-speed transmission signal using shared resources and reduced area. A differential amplifier has its current source/sink connected to a supply terminal. A multiplexing...
7123046 Apparatus for adaptively adjusting a data receiver  
Offsets and timing skews in data signals captured in a data receiver are reduced by adaptively adjusting a transition threshold of the data receiver. A data corrector provides a set of adjustment...
7123055 Impedance-matched output driver circuits having coarse and fine tuning control  
Impedance-matched output driver circuits include a first totem pole driver stage and a second totem pole driver stage. The first totem pole driver stage includes at least one PMOS pull-up...
7112989 Transmission signal correction circuit  
In a transmission signal correction circuit, a first output circuit outputs a data string to outside. A second output circuit for correction is connected in parallel with the first output circuit....
7109747 Low power, high speed logic controller that implements thermometer-type control logic by utilizing scan flip-flops and a gated clock  
The power dissipation, logic complexity and chip area of a thermometer controller are all significantly reduced by utilizing a series of scan flip-flops that are connected together to form a...
7098704 Semiconductor integrated circuit device  
A semiconductor integrated circuit device with a buffer circuit is disclosed, which comprises a pre-buffer configured to receive an input signal from a front-stage circuit, a drive buffer having a...
7095246 Variable impedance output buffer  
An output buffer circuit (10, 40, 50) includes an output driver transistor (12), a predriver circuit (14, 54), and a bias generator (16, 54). The predriver circuit (14, 54) has an input terminal...
7088126 Output circuit  
An output circuit includes a source follower constituted by a n-channel MOS transistor, having a drain connected to a power source and a source connected to an output terminal, and applying an...
7080185 Bus control device altering drive capability according to condition  
An access destination determining section determines whether an access is directed to region 1 or region 2. A region 1 drive capability register and a region 2 drive capability register set drive...
7078943 Series terminated CMOS output driver with impedance calibration  
A differential line driver includes a plurality of driver cells. Control logic outputs positive and negative control signals to the driver cells so as to match a combined output impedance of the...
7071728 Hybrid compensated buffer design  
According to one embodiment of the present invention, a circuit is disclosed. The circuit includes a plurality of driver slices, a portion of the plurality of the driver slices being used to...
7068077 LVDS output driver having low supply voltage capability  
A LVDS output driver has been disclosed. One embodiment of the LVDS output driver includes a number of source followers, each of the source followers including a pull-down transistor having a...