Abstract:
Memories, driver circuits, and methods for generating an output signal in response to an input signal. One such driver circuit includes an input stage and an output stage. The input stage receives the input signal and provides a delayed input signal having a delay relative to the input signal. The output stage receives the delayed input signal and further receives the complement of the input signal. The output stage couples an output node to a first voltage in response to a complement of the input signal having a first logic level and couples the output to a second voltage in response to the complement of the input signal having a second logic level. The output stage further decouples the output from the first or second voltage in response to receiving the delayed input signal to provide a high-impedance at the output node.
Abstract:
In accordance with some embodiments of the present disclosure, an oscillator circuit comprises, a first pad associated with a first terminal of an oscillator and a second pad associated with a second terminal of the oscillator. The oscillator is configured to generate an oscillating signal and communicate the oscillating signal from the second terminal to a clock distributor coupled to the second pad. The oscillator circuit further comprises an oscillator gain element comprising an output node coupled to the first pad and an input node coupled to the second pad. The oscillator circuit also comprises a digital-to-analog converter (DAC) coupled to the first pad. The oscillator circuit additionally comprises a switching circuit coupled to the gain element. The switching circuit is configured to enable the gain element when the oscillator comprises a resonator and disable the gain element when the oscillator comprises a voltage controlled oscillating module.
Abstract:
In accordance with some embodiments of the present disclosure, an oscillator circuit comprises, a first pad associated with a first terminal of an oscillator and a second pad associated with a second terminal of the oscillator. The oscillator is configured to generate an oscillating signal and communicate the oscillating signal from the second terminal to a clock distributor coupled to the second pad. The oscillator circuit further comprises an oscillator gain element comprising an output node coupled to the first pad and an input node coupled to the second pad. The oscillator circuit also comprises a digital-to-analog converter (DAC) coupled to the first pad. The oscillator circuit additionally comprises a switching circuit coupled to the gain element. The switching circuit is configured to enable the gain element when the oscillator comprises a resonator and disable the gain element when the oscillator comprises a voltage controlled oscillating module.
Abstract:
A cross point switch, in accordance with one embodiment of the present invention, includes a plurality of tri-state repeaters coupled to form a plurality of multiplexers. Each set of corresponding tri-state repeaters in the plurality of multiplexers share a front end module such that delay through the cross point switch due to input capacitance is reduced as compared to conventional cross point switches.
Abstract:
An inverting cell including a first inverter having first and second inputs; a second inverter having first and second inputs, wherein the second input of the second inverter is connected to the first input of the first inverter and the output of the first and second inverters is connected to the second input of the first inverter; and a third inverter connected between the output of the first and second inverters and the first input of the second inverter.
Abstract:
A CMOS driver circuit is configured to provide a tri-state condition after a predetermined number of like-valued data bits have been transmitted, reducing the presence of intersymbol interference (ISI) along a transmission channel. In situations where the transmission channel is bandwidth-limited, the use of the tri-stating technique allows for the complete transition to the supply rails during the given bit period.
Abstract:
A semiconductor device stabilizes an operation of an input buffer. A semiconductor device includes an input potential detection unit outputting a detection signal in response to a level of an input signal. An input buffer buffers the input signal by performing a differential amplifying operation through a first current sink unit. A second current sink unit, sharing an output with the input buffer, differentially amplifies the input signal of the input buffer in response to a level of the detection signal.
Abstract:
An output CMOS buffer includes MOS enhancement transistors and has a second complementary pair of natural or low threshold transistors, connected respectively in parallel to transistors of opposite type of conductivity of the complementary pair of enhancement MOS transistors of the final buffer stage. The gate terminals of the pair of natural or low threshold transistors are controlled by respective inverters, each supplied through a slew rate limiter of the slope of the driving current and are respectively connected between the positive supply node of the output buffer and a negative (below ground potential) node and between the common ground node of the output buffer and a positive supply node. The negative voltage and the positive voltage on the nodes are at least equal to the absolute value of the threshold voltage of the natural or low threshold transistors.
Abstract:
A CMOS driver circuit is configured to provide a tri-state condition after a predetermined number of like-valued data bits have been transmitted, reducing the presence of intersymbol interference (ISI) along a transmission channel. In situations where the transmission channel is bandwidth-limited, the use of the tri-stating technique allows for the complete transition to the supply rails during the given bit period.
Abstract:
An output circuit including: a tri-state output circuit capable of outputting high-impedance state, high-level state, and low-level state, in which the high-level state and low-level state are low-impedance state, and switching the high-impedance state and the low-impedance state in accordance with a first control signal; and a delay circuit outputting the first control signal to the tri-state output circuit by inputting a second control signal and delaying the second control signal so that timing delay time of the second control signal switching the high-impedance state to the low-impedance state is longer than the timing delay time of the second control signal switching the low-impedance state to the high-impedance state, is provided.