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6188243 |
Input/output circuit with high input/output voltage tolerance
An input/output (I/O) circuit with a high I/O voltage tolerance is provided for use in conjunction with an IC device that operates with two system voltages, such as 3.3 V and 5 V. The particular...
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6184738 |
Input buffer for supplying semiconductor device with internal signal based on comparison of external signal with reference potential
An input buffer of a semiconductor device is provided. A first voltage shift circuit converts an input signal formed of a low amplitude logic signal overlapping 1.65V or 2.9V to a first signal...
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6181189 |
Interface circuit switching between a source-input mode and a sink-input mode
The interface circuit of the present invention is composed to provide: changeover switch 24 that switches between a connection state in which pull-up resistor 23 is connected to input terminal...
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6177824 |
Level shifting circuit
A semiconductor device comprises a level shifting circuit that can be achieved without using an extra charge pump and using low voltage transistors. The level shifting circuit 10 controls the...
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6175249 |
High speed low skew CMOS to ECL converter
A logic level converter for translating CMOS logic signals to into differential logic signal pairs such as those associated with ECL levels. The converter includes a first converter branch coupled...
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6166580 |
CMOS high-to-low voltage buffer
A voltage-buffer circuit for changing an input signal at a first voltage range to an output signal at a second voltage range. In one embodiment, the voltage-buffer circuit is comprised of an input...
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6166969 |
Method and apparatus for a level shifter for use in a semiconductor memory device
Disclosed is a level shifter that can receive and convert a first signal that can have various voltage logic levels to a second signal having internal voltage logic levels. The level shifter...
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6163170 |
Level converter and semiconductor device
A level converter includes a first circuit which converts a first level of a signal into a second level which is higher than the first level, and a second circuit which causes a potential of a...
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6163179 |
Voltage level transfer
A single-end-input voltage level transfer is provided to transfer a first signal into a second signal. The voltage level transfer has a first, a second, a third, and a fourth transistors, a first...
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6163197 |
Low noise method for interconnecting analog and digital integrated circuits
An apparatus and method for interconnecting digital and analog circuitry on separate substrates within a single integrated chip package attenuates logic level signals on one substrate, transmits...
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6160431 |
Power-on reset circuit for dual supply voltages
A power-on reset circuit is provided which uses a dual voltage detection circuit to output a voltage detection signal. The dual voltage detection circuit is coupled to a first supply voltage...
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6157225 |
Driving circuit with three output levels, one output level being a boosted level
A driving circuit supplied by a supply voltage and a reference voltage, generates an output signal and comprises a first circuit adapted to selectively couple the output signal to the reference...
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6154084 |
Method for switching voltages higher than a supply voltage on a semiconductor chip with a circuit configuration
A method for switching high positive or negative voltages to an output terminal of a circuit configuration includes connecting a series circuit of a first p-channel transistor and a first n-channel...
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6150844 |
High voltage tolerance output stage
An output stage for electronic circuits with high voltage tolerance and of the type comprising an output buffer made up of a complementary transistor pair comprising a P-channel MOS pull-up...
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6150845 |
Bus hold circuit with overvoltage tolerance
A CMOS-based bus-hold circuit having overvoltage tolerance. The bus-hold circuit of the present invention includes, in addition to conventional input and latching inverters, a sense circuit and an...
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6147539 |
Method and structure for improving power consumption on a component while maintaining high operating frequency
A low power consumption component which operate at a high frequency is provided by separating out those critical signal paths which acquire a higher voltage to operate below a maximum propagation...
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6140885 |
On-chip automatic system for impedance matching in very high speed input-output chip interfacing
An impedance matching system and a network for automatic impedance matching at a driver circuit output for high frequency input-output devices. The impedance matching network comprises a control...
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6137339 |
High voltage integrated CMOS driver circuit
A high voltage integrated driver circuit having a control stage and a driver stage. The control stage receives a low voltage signal having a predetermined voltage swing, and produces first and...
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6137351 |
Universal current source and current sink interface
An interface circuit for interfacing a data bus with a current sinking sensor or a current sourcing sensor. An input terminal is connected between a cathode of a first diode and an anode of a...
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6130562 |
Digital driver circuit
A digital driver circuit with increased maximum output voltage amplitude and therefore also increased maximum current amplitude for constant power supply voltages is provided. A current sensing...
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6118318 |
Self biased differential amplifier with hysteresis
A self biased differential amplifier has a switching point accurately set according to a reference voltage. DC hysteresis is provided, by a circuit internal to the differential amplifier. The...
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6118323 |
Electrostatic discharge protection circuit and method
An integrated circuit includes a voltage supply internal to the integrated circuit and circuitry for sensing the voltage level of the internal voltage supply, the circuitry responsive to produce a...
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6111450 |
Operating voltage adapting buffer
The present invention provides an integrated circuit having an operating voltage adaptable buffer, capable of operating in different voltage signaling environments, which includes a control circuit...
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6107857 |
Level converting circuit
A level converting circuit converts the level of an input signal to a positive or a negative level according to a power source voltage for supplying a voltage of a reference level for the input...
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6100726 |
High input impedance buffer circuit having a high-side current source circuit with RCB cancellation
A buffer circuit having a high input impedance. The buffer circuit comprises an input lead, a first stage having a first emitter follower transistor and a first level shifter transistor, a second...
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6097236 |
Signal transfer system and method using an intermediate voltage
A signal transfer system (10) includes a driver (12) coupled to a receiver (14) using a signal line (16). The driver (12) drives the signal line (16) from an intermediate voltage (22) to a selected...
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6094083 |
Voltage converting buffer circuit capable of realizing high speed flip-flop action in the flip-flop circuit
A voltage converting buffer circuit includes an inverter for receiving an input data signal to output an inverted data signal, a flip-flop having first and second branches for receiving the input...
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6087882 |
Ultra-low power magnetically coupled digital isolator using spin valve resistors
An isolator having a driver circuit which is responsive to an input signal to drive signals into a magnetic-field generator such as at least one coil. The generator is magnetically coupled to a...
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6087881 |
Integrated circuit dual level shift predrive circuit
A dual stage voltage level predrive circuit for an integrated circuit chip including two level shifter stages in series. The voltage level shifting circuit uses single dielectric layer devices and...
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6087880 |
Level shifter
A level shifter provided with a first inverter for shifting a high logic level of an input signal, a second inverter for shifting a low logic level of the input signal, a first output transistor...
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6087852 |
Multiplexing a single output node with multiple output circuits with varying output voltages
The invention is a multiplex circuit for outputing two or more signals of different levels to a common output pad where a first output driver (D h ) is powered from a voltage rail having a higher...
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6084459 |
Voltage level shifting circuit
An improved voltage level shifting circuit which is capable of increasing a level shifting speed and reducing a current consumption and layout area by decreasing a pull-up capacity of the pull-up...
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6081131 |
Logical amplitude level conversion circuit, liquid crystal device and electronic apparatus
A logic amplitude level converter circuit of the present invention includes voltage biasing means for obtaining a signal being amplified swinging relative to the logic threshold voltage of an...
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6081152 |
Output buffer with protective limit of voltage across terminals of devices within the output buffer
An output buffer interfaces a digital system having devices designed for low operating voltages to an output coupled to an external system having higher operating voltages. The output buffer drives...
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6081153 |
Latch circuit and flip-flop circuit having voltage level converting function
A master slave type flip-flop circuit having a master latch circuit ML and a slave latch circuit SL has a voltage level converter circuit 20 in the slave latch circuit SL to reduce the number of...
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6069515 |
High voltage input buffer circuit using low voltage transistors
An input buffer circuit implemented with low voltage transistors, that is capable of receiving and recognizing input logic signals having higher voltage levels is disclosed. The present invention...
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6066975 |
Level converter circuit
A voltage level converter circuit having an input section and a driver section. A gate of a driver field effect transistor that is connected to an output terminal is directly driven by an input...
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6064228 |
Circuit configuration for generating digital signals
The device for generating digital signal levels can be used for signals of various logic standards. A voltage terminal for feeding an external reference voltage is provided as well as an internal...
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6064226 |
Multiple input/output level interface input receiver
The present invention provides an input receiver in a differential amplifier or modified differential amplifier configuration which adjusts the input high and low voltage signals compatible with...
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6057718 |
Method and apparatus for 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...
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6057726 |
Output circuit for power IC with high breakdown voltage
An output circuit for a high-breakdown-voltage power IC is provided. The output circuit includes a level-shift circuit on constant-current type including an output terminal connected to the gate of...
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6054888 |
Level shifter with protective limit of voltage across terminals of devices within the level shifter
A level shifter interfaces a digital system having devices designed for low operating voltages to an external system having higher operating voltages. The level shifter is comprised of two level...
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6052014 |
Integrated circuit being capable of transferring signals of different voltage levels between its input and output
An input/output pad part <5> comprises an input protection circuit <51> which is connected to an external terminal <OT>, an output buffer <52> which is connected to the...
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6052021 |
Signal processing integrated circuit having first and second buffers each connected in first and second paths between an analog signal processor and a digitial signal processor to prevent abnormal current flow
A signal processing apparatus is formed on a single semiconductor substrate and includes in a mixed relation an analog signal processing section and a digital signal processing section. A plurality...
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6052013 |
Apparatus for generating a timing signal
An apparatus having an input node and an output node for generating a timing signal. The apparatus includes an enabling circuit, one or more inverters, and one or more capacitive elements. The...
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6046621 |
Differential signal generator with dynamic beta ratios
A differential signal generator for generating a true/complement output signal pair in response to a single-ended input signal is disclosed. The differential signal generator includes an input...
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6043690 |
Bidirectional follower for driving a capacitive load
A bidirectional source follower system includes an N channel transistor and P channel transistor which conduct in opposite ways. The n channel transistor is connected to quickly source current,...
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6043688 |
Ratio metric fault tolerant and redundant serial communication system
A fault tolerant communication system for transmitting a serial data signal through multiple wires regardless of whether one of the wires is open circuited, shorted to ground, shorted to a positive...
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6043698 |
Voltage level shifter
The present invention provides a voltage level shifter for use in a digital circuit having a low voltage portion and a high voltage portion. The voltage shifter comprises an interface circuit...
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6043699 |
Level shift circuit
A level shift circuit reduced in a circuit area and conversion delay when converting a signal level, capable of operating at a high speed, expanded in the range of the operatable voltage, and...
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