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5850159 High and low speed output buffer with controlled slew rate  
An output buffer is provided which receives an input signal for output onto an output terminal. The output buffer has a first driver and a second driver for driving the output terminal to a...
5847581 Low power CMOS precision input receiver with integrated reference  
A receiver circuit is provided. The receiver circuit includes a differential stage that has a first input that receives a first signal, a second input that receives a reference signal and an...
5847575 Method and apparatus for performing switched supply drive in CMOS pad drivers  
A driver circuit for limiting electrical noise on a quiescent signal is provided which includes a Transition High Driver circuit, a Transition Low Driver circuit, a Quiescent High Driver circuit,...
5841299 Method and apparatus for implementing an adiabatic logic family  
A low power-dissipation gate for use in a logic cascade is described. The gate includes a pull-up switch arrangement, a pull-down switch arrangement and hold circuitry for holding an output of the...
5841702 Output circuit for memory device  
An output circuit for a semiconductor memory device includes an output buffer for buffering an externally applied output enable signal and a signal outputted from a sense amplifier in accordance...
5841305 Circuit and method for adjusting duty cycles  
A circuit provides a duty cycle adjustment through a gate delay for operation at various output voltage levels. The delay may be provided through an OR gate and an AND gate that will generally...
5834859 Battery backed configurable output buffer  
The present invention is a battery backed output buffer which provides a well-defined signal, even during battery power. The buffer includes a regular output buffer for providing output data...
5831447 Output buffer with noisy/quiet voltage sources and feedback patch for noise reduction  
An output buffer array to a data output device in an integrated circuit. The output buffer array includes a plurality of output buffers connected together to a pair of parallel connected first and...
5825206 Five volt safe output buffer circuit that controls the substrate and gates of the pull-up devices  
An input/output buffer for computer circuitry including a P type transistor device responsive to data signals for selectively furnishing voltage from a first source of potential at a buffer...
5825215 Output buffer circuit  
An output buffer circuit of the present invention comprises a first input terminal receiving a first input signal, a second input terminal receiving a second input signal, a control input terminal...
5825219 Fast edge rate signal driver  
A method for asserting signals onto an output line connected to a passive external pull-up resistor by using a fast edge rate signal driver is provided. The fast edge rate signal driver has first,...
5821783 Buffer circuits with changeable drive characteristic  
A buffer circuit according to the present invention includes an input terminal for inputting an input signal, an inverter circuit for inverting the input signal and outputting the inverted input...
5818262 High speed CMOS output buffer using 3 volt or lower supply voltage supplied on a plurality of bond pads  
A integrated circuit buffer includes a first inverter comprising a pull-up transistor of a first conductivity type (e.g., p-channel) and a pull-down transistor of a second conductivity type (e.g.,...
5811991 Logic circuit and semiconductor device using it  
A logic circuit comprises an output line, a first switch having an end connected to the output line and another end connected to a power source potential, a second switch having an end connected...
5801550 Output circuit device preventing overshoot and undershoot  
The pulse output circuit device comprises two transistors (2, 4) for constructing an output buffer, a transistor (7) connected between the output line (OUTP) of the output buffer and the high...
5793248 Voltage controlled variable current reference  
A current source providing a voltage-controlled variable-current reference is described which employs a conventional current mirror to supply a current to a diode-connected transistor, and to a...
5789937 Impedence self-adjusting driver circuit  
A driver circuit including of one or more fingers, or parallel driver circuits, senses for an overshoot or an undershoot condition of the signal transmitted onto a transmission line coupled to the...
5781045 Method and apparatus for predriving a driver circuit for a relatively high current load  
A predriver circuit for current switching, di/dt, noise control for high current load devices is disclosed. Parallel weak pull up and pull down circuit paths are combined with strong pull up and...
5760621 Method for operating a charge conserving driver circuit for capacitive loads  
A CMOS driver device including an output stage having a first PMOS transistor and an NMOS transistor serially connected between a first voltage and ground and having a second PMOS transistor and...
5760606 High voltage withstanding circuit and voltage level shifter  
A switch circuit having a high withstanding voltage and low driving ability and another switch circuit having a low withstanding voltage and high driving ability are connected to a specified node...
5760618 Process compensated integrated circuit output driver  
An integrated circuit output driver which reduces the effect of power supply and/or integrated circuit fabrication process variations on signal propagation delay. The output driver produces an...
5751161 Update scheme for impedance controlled I/O buffers  
A method and circuit are disclosed for changing the output impedance of an impedance controlled buffer from an initial impedance to a final impedance, while minimizing data transmission errors....
5751180 Electrical device structure having reduced crowbar current and power consumption  
Power consumption, electromigration, joule heating, and voltage supply ringing are reduced in digital integrated circuits by reducing crowbar current. In one embodiment, crowbar current in a...
5748028 Method and apparatus for multi-level input voltage receiver circuit  
The invention is embodied in a receiver and a method for responding to an input signal. The input signal is received in a first stage of the receiver, which generates a first stage output signal...
5739707 Wave shaping transmit circuit  
An integrated circuit driver for providing data to a communications channel comprises first and second output buffers coupled to first and second output conductors (e.g. bondpads) respectively....
5734277 Output circuit and method for suppressing switching noise therein  
An output circuit (40) includes pull-up transistor (12), two pull-down transistors (14, 16), and a noise suppression circuit (58). When an input node (50) of the output circuit (40) switches to a...
5726589 Off-chip driver circuit with reduced hot-electron degradation  
An output driver circuit for a semiconductor chip has a push-pull output with a P-channel pull-up and an N-channel pull-down. Predrivers produce push-pull outputs for driving the gates of the...
5721508 5 Volt tolerant 3.3 volt output buffer  
Circuit for preventing the improper functioning of a CMOS output buffer that may occur due to the fact that since the output buffer P-channel may be coupled between a supply voltage and an output...
5719509 Method of controlling transmission of binary pulses on a transmission line  
A push-pull output driver includes a pair of auxiliary, low current capacity output circuits connected in parallel with a pair of high current capacity, series connected devices. In response to a...
5703496 Method and apparatus for limiting the slew rate of output drivers by selectively programming the threshold voltage of flash cells connected thereto  
The output driver includes a plurality of transistor devices connected to an output line. In one arrangement, a separate flash-programmable element is connected to each of the plurality of...
5689198 Circuitry and method for gating information  
A first inverter includes a first input coupled to a first input node. Also, the first inverter includes a first output coupled to an output node. Further, the first inverter includes a voltage...
5686853 Driver circuitry adjusted to allow high speed driving and reduce potential variations of interconnections  
The present invention provides a driver circuitry having a single input terminal for receiving an input signal of binary digits consisting of high and low levels, and at least first and second...
5682105 Bonding option circuit having no pass-through current  
A bonding option circuit comprises a logic gate circuit connected between a bonding pad and a power supply voltage, a load capacitance connected between ground and the logic gate circuit, and an...
5661417 Bus system and bus sense amplifier with precharge means  
A purpose of this invention is to realize a bus system of high speed and low power consumption type applying precharge. A precharge signal input line (4), a power source potential (VDD), and a bus...
5654652 High-speed ratio CMOS logic structure with static and dynamic pullups and/or pulldowns using feedback  
A high speed ratio CMOS logic structure includes a static PMOS pullup transistor connected to an output node, and a plurality of NMOS pulldown transistors, connected in parallel, to the output...
5654981 Signal transmission system and method of operation  
A signal transmission system (10) is provided that comprises a transmitter circuit (12) which transmits a signal through a transmission line (16) to a receiver circuit (14) using the current mode...
5627487 Charge conserving driver circuit for capacitive loads  
A CMOS driver device including an output stage having a first PMOS transistor and an NMOS transistor serially connected between a first voltage and ground and having a second PMOS transistor and...
5617043 Output buffer with reference voltage circuit for increasing speed  
A data output buffer rapidly transits an output data signal to improve the data reading speed of a semiconductor memory device. To do this, the data output buffer comprises a first input terminal...
5614842 Semiconductor integrated circuit with buffer circuit and manufacturing method thereof  
A semiconductor integrated circuit with a buffer circuit is disclosed. The source of the first P(N)MOS transistor is connected to a voltage supply (ground), its drain being connected to an output...
5610538 Buffer apparatus having a low output impedance  
A buffer apparatus having a low output impedance includes a first transistor having one terminal coupled to a voltage source, the other terminal coupled to an output terminal of the buffer, and a...
5576641 Output buffer  
An output buffer generates "1" or "0" data based on control signals VA and VB transferred from memory cells through a DQ gate in a DRAM. The output buffer has first and second discharge circuits,...
5568062 Low noise tri-state output buffer  
A buffer circuit includes a pair of pull-up output transistors and a pair of pull-down output transistors driving an output line. Each output transistor is driven by its own tristate input...
5561792 Microprocessor with software switchable clock speed and drive strength  
A microprocessor circuit is provided that allows the internal microprocessor clock speed to vary depending upon a register that can be programmed by software. In addition, the drive strength of...
5559447 Output buffer with variable output impedance  
An output buffer with a variable output impedance is described. The buffer is designed so that the output impedance is set relatively low during the initial portion of the output transition in...
5550486 Circuit and method for providing a known logic state at insufficient supply voltage  
A circuit and method to force an output of a logic circuit to a known state when its supply voltage rises above a predetermined level includes an MOS logic transistor (122) connected between the...
5546022 Static logic circuit with improved output signal levels  
A static logic circuit with improved output signal levels includes a static complementary MOSFET circuit with a signal node and pull-up and pull-down amplifiers, each with at least one biasing...
5537060 Output buffer circuit for memory device  
An output buffer circuit for a memory device comprising a pull-up path including first and second PMOS transistors for forming two parallel charging paths, and a pull-down path including first and...
5534791 Noise isolated I/O buffer  
An I/O buffer is provided that is noise-isolated, i.e., less susceptible to the effect of switching noise. In particular, a noise isolated I/O buffer includes an output terminal, a transient...
5534803 Process insensitive off-chip driver  
A small and efficient control circuit for a compensated CMOS off-chip driver and a driver circuit incorporating the control circuit. The control circuit uses an exclusive OR gate as a phase...
5532621 Output buffer circuit, input buffer circuit and bi-directional buffer circuit for plural voltage systems  
Bi-directional buffer circuit comprises a second P-channel transistor whose back gate is connected to a pad, a third P-channel transistor disposed between a gate of the second P-channel transistor...