摘要:
A bias circuit for providing a reference voltage to an output circuit, for example, an ECL circuit in an LSI. The bias circuit is able to operate at a lower power supply voltage of about -2 V and includes a first transistor having an emitter which is connected to a power supply and a base and a collector commonly connected through an impedance circuit to ground. The bias circuit is also connected to the output circuit, whereby heat generation in the LSI is decreased.
摘要:
An ECL gate array comprising a plurality of basic cells. Each basic cell has a pair of emitter-coupled transistors, and a load connected between the collectors of the transistors and a power supply line. In accordance with a circuit design information, the resistance value of the load can be selected for increasing a noise margin of the output logic levels without deteriorating the switching speed.
摘要:
A latch circuit including at least three gate circuits, and a noise resistance circuit. A first gate circuit (3, 4, 11, 16) receives a data signal (DT) and a clock signal (CLK). A second gate circuit (1, 7, 13, 17) is connected to an output of the first gate circuit. A third gate circuit (2, 5, 12 18) receives a first inverted clock signal (CLK) at an input terminal. A second input terminal of the third gate circuit is connected to an output of the second gate circuit and is a first output terminal is connected to an input terminal of the second gate circuit, so that a feedback line is formed between the second and third gate circuits. The noise resistance circuit (8, 9, 20, 21) has at least a signal delay element in the feedback line. The noise resistance circuit may include a filter circuit. The noise resistance circuit may also include an amplifier circuit.
摘要:
A semiconductor device such as an ECL gate array having emitter-follower-type output transistors, wherein protective elements are arranged between input/output pads and a power supply line connected to the collectors of the emitter-follower-type output transistors, whereby wiring between the protective elements and the power supply line become unnecessary so that the manufacturing process becomes easy and the integration degree is improved while a large tolerance voltage is maintained against destruction due to static electricity.
摘要:
An integrated circuit device having a simplified bias supply circuit for supplying bias power sources for a plurality of circuit units or cell units. The integrated circuit device cmprises: a cell unit array having a plurality of cell units disposed in a central portion of a semiconductor chip; a first power supply line and a second power supply line; and one or more common bias generating portions disposed at the periphery of the cell unit array, each of the common bias generating portions generating a single common bias voltage which differs from the potential of the second power supply line by a constant value. Each of the cell units comprises one or more logic circuit cells such as ECL type logic circuits, and an inner bias circuit which receives the common bias voltage and which generates a first inner bias voltage and a second inner bias voltage that are supplied to the respective logic circuit cell. The second inner bias voltage differs from the common bias voltage by a constant value, and the first inner bias voltage differs from the potential of the first power supply line at the cell unit by the value determined by the values of the elements in the inner bias circuit and by the common bias voltage.
摘要:
A job processing method in a printing system having a printing apparatus which can accept a plurality of kinds of print jobs, wherein a print stop request of a print job which is to be printed by the printing apparatus is enabled by a user via a user interface section; and if a print job which is an object of a print stop is a print job which requires printing for a plurality of copies, the print stop processing of the print job is enabled by the printing apparatus in the print stop processing method based on a request from a user inputted via said user interface section in a plurality of kinds of print stop processing methods which can be executed in the printing apparatus.
摘要:
A frequency conversion method and a frequency conversion circuit which enlarge the frequency difference between the upper and lower sidebands of the output signal so as to enable the undesired sideband to be easily eliminated by a filter even in a case where the frequency of the input signal is low. First, a first excitation signal having a first excitation frequency (Fp) is modulated by an input signal (a) of a predetermined frequency (F1) to produce two sidebands and thereby generate a first intermediate signal (b). Next, a second excitation signal having a second excitation frequency (Fq) lower than the first excitation frequency (Fp) by exactly a frequency twice the frequency of the input signal (a) is modulated by the input signal (a) to produce two sidebands and thereby generate a second intermediate signal (c). Further the first intermediate signal (b) and the second intermediate signal (c) are added so that the lower sideband of the first intermediate signal (b) and the upper sideband of the second intermediate signal (c) are cancelled by each other to thereby generate an output signal (d) composed of the upper sideband of the first intermediate signal (b) and the lower sideband of the second intermediate signal (c). By this, the space between the upper sideband and the lower sideband is widened and thereby the lower band erasing filter can easily erase the lower sideband.
摘要:
A semiconductor device having improved construction of connection leads extending from the chip carrier housing for connecting a semiconductor chip in the housing with the external circuitry. The connection leads are arranged in the form of a plurality of concentric arrays. The leads in the outermost array are composed of surface connection leads to be electrically connected to the uppermost layer of a multilayer printed board to which the semiconductor device will be mounted, and the leads in the inner array or arrays are composed of lead pins to be inserted into and be electrically connected to the through holes of the multilayer printed board.
摘要:
An ECL integrated circuit comprises an emitter-follower transistor at the output stage and a pull-down resistor connected to the emitter-follower transistor. The ECL integrated circuit is provided with a test circuit on a line extending from the output of emitter-follower transistor to a subsequent stage so as to cause a test current to flow only at the time of the test. The test current is smaller than the current usually flowing to the pull-down resistor but larger than the current flowing to the subsequent stage.
摘要:
A job processing method in a printing system having a printing apparatus which can accept a plurality of kinds of print jobs, wherein a print stop request of a print job which is to be printed by the printing apparatus is enabled by a user via a user interface section; and if a print job which is an object of a print stop is a print job which requires printing for a plurality of copies, the print stop processing of the print job is enabled by the printing apparatus in the print stop processing method based on a request from a user inputted via said user interface section in a plurality of kinds of print stop processing methods which can be executed in the printing apparatus.