摘要:
Clocked half-rail differential logic circuits with sense amplifier and shut-off are activated by a delayed clock and include a sense amplifier circuit that is triggered by a second delayed clock and a shut-off device. The addition of the sense amplifier circuit, and second delayed clock signal allows the sense amplifier circuit to act as the driver and therefore there is no need for increasing the size of the differential logic network to provide a driver function. The addition of the shut-off device provides a half-rail differential logic circuit with shut-off that does not experience the large or “dip” experienced by prior art half-rail differential logic circuits and is therefore more power efficient.
摘要:
An integrated circuit logic topology or architecture suitable for low voltage differential logic operating at radio frequencies is disclosed. The topology, referred to as enhanced pseudo common mode logic, is similar to and compatible with traditional CML, and provides the additional advantage of eliminating the need for level conversion between consecutive logic gates, thereby increasing the potential maximum operating frequency of subsystems implemented using the invention. The invention retains most of the advantages of traditional CML, and in addition permits the independent selection of output logic high level and output logic low level so that they may be matched with the succeeding circuit input levels.
摘要:
A pass transistor circuit comprises a plurality of pass transistors connected in parallel. The same input signal is inputted into the sources of these pass transistors. Continuities of these pass transistors are controlled by a plurality of control signals having an exclusive relationship therebetween. A plurality of buffers respectively drive the drive segments including at least the pass transistors and wirings. The drive segments being a plurality of divided ranges each having an equal potential.
摘要:
A symmetric current mode logic with symmetric input loads as well as identical input logic levels at the input terminals so as to prevent phase error due to level adjustment and to further avoid signal surges due to current steering by parallel switching.
摘要:
The present invention provides a pad system for an integrated circuit or device. The pad system includes logic circuitry having at least one pad input terminal for connecting to at least one pad and at least two output terminals for connecting to the at least one circuit system of the integrated circuit or device. The logic circuitry is configurable to selectively connect the at least one pad between at least two points of the at least one circuit system of the integrated circuit or device.
摘要:
A method and apparatus for performing logic operations using a current mode logic circuit is provided. Further, a method and apparatus for performing high fan-in logic operations is provided. Further, a logic circuit that selectively steers current based upon a plurality of inputs is provided. Further, a method for performing logic operations using current steering is provided.
摘要:
A capacitor-coupling differential logic circuit handling the output of a differential circuit using coupling capacitors and sense amplifier. The coupling capacitors can couple a control signal to the corresponding internal terminal, i.e., the output terminal of the differential circuit. During evaluation, the differential circuit generates a voltage difference on the internal signal of the internal terminal according to the input signal and the predetermined logic operation. The sense amplifier is used to amplify and output the voltage difference on the internal; signal at the internal terminal.
摘要:
A low voltage differential circuit is described herein including a complementary logic tree having first, second and third inputs and two outputs, the logic tree for performing a desired logical function on signals received the the first input, thereby opening a pathway for current flow between at least one of the following: the second input and the first output, the second input and the second output, the third input and the first output, the third input and the second output. The circuit further includes a first transistor having a first gate, a first source, and a first drain, the first drain connected to the first output, the first source being connected to a supply voltage, a second transistor having a second gate, a second source, and a second drain, the second source connected to the first gate, the second drain connected to the first drain; and a third transistor having a third gate, a third source, and a third drain, the third source being connected to a supply voltage, the third gate being connected to the second drain, the third drain connected to the second source and the second output.
摘要:
A circuit for shifting the potential level of an input signal toward higher potentials is added to a conventional differential ECL circuit in order to shift levels of emitter potentials of npn bipolar transistors forming a current switch toward higher potentials. Thus, the ECL circuit is improved to ensure a continuous flow of a current and to maintain stable operations even at an instant where base potentials of the npn bipolar transistors are switched by a standard ECL-level signal even when the power source voltage is around −2 V.
摘要翻译:为了将形成电流开关的npn双极型晶体管的发射极电位的电平偏移到更高的电位,将用于将输入信号的电位电平向更高电位移动的电路加到传统的差分ECL电路。 因此,ECL电路被改进以确保电流的连续流动并且即使在npn双极晶体管的基极电位被标准ECL电平信号切换的时刻也保持稳定的操作,即使当电源电压在 - 2 V.
摘要:
A semiconductor integrated circuit including a logic circuit is disclosed, in which the decoder area can be reduced and which has an effect of reduction of the whole chip size. Among the MOS FETs included in the logic circuit, those other than a MOS FET for supplying electric charges via an output terminal have threshold voltage values lower than the threshold voltage value of the MOS FET for supplying electric charges. The direction of the gate width of each MOS FET is perpendicular to the direction along which word lines extend in the memory cell areas, and all of the MOS FETs are aligned in a direction perpendicular to the direction along which the word lines extend.