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| Number | Title | Issue Date |
| 7183806 | Output circuit Since voltages of two input terminals of an output unit having an online download function are decided by voltages which are not correlative to each other, a value of an incoming current on the start-up becomes large. The present invention solves the problem of turn... | 02/27/2007 |
| 7098684 | High speed switch A high speed switch. The novel switch includes an input circuit having a transistor Q1 for receiving an input signal, a first mechanism for providing a path from an output of Q1 to an output terminal, and a second mechanism for receiving a control sign... | 08/29/2006 |
| 6552577 | Differential emitter-coupled logic buffer having reduced power dissipation A logic buffer includes a logic gate having at least two input terminals and two output nodes, a plurality of output terminals, each having a capacitance associated therewith and a pull-up circuit interconnected between each output node and the plurality ... | 04/22/2003 |
| 6400184 | Transistor output circuit A transistor output circuit featuring a low power consumption, high speed and stabilized operation is realized. The transistor output circuit of the invention is comprised of: transistors Q59 and Q57 having respective bases supplied with input signals in ... | 06/04/2002 |
| 6215330 | Differential diode transistor logic (DDTL) circuit enhancements A relatively low voltage, high speed, differential diode transistor logic DDTL) family of circuits for performing various Boolean logic functions, such as AND, OR, etc. as well as non-Boolean functions, such as buffering and storage. The logic family may ... | 04/10/2001 |
| 6100716 | Voltage excursion detection apparatus It is common that the presence of a defect causes abnormal gate output voltage excursions in data buffers, AND gates, OR gates and multiplexers in current-mode logic circuits. A voltage excursion is detected by a voltage excursion detection apparatus whic... | 08/08/2000 |
| 6100712 | Output driver circuit with jump start for current sink on demand An output driver circuit for coupling a logic circuit to load includes an input node, an output node for coupling to the load and a pull down switch which discharges the output node in response to a signal received at the input node. A current sink circui... | 08/08/2000 |
| 6091266 | Circuit arrangement for a digital circuit using differential logic Circuits using differential logic are employed in high-speed optical communications systems. An essential problem in the design of large-scale integrated circuits for this purpose is the control of undesired heat generation, so that the circuits should ha... | 07/18/2000 |
| 5945848 | Effectively differential, multiple input OR/NOR gate architecture A multiple input, low voltage, OR/NOR gate architecture based on a single-ended OR/NOR gate circuit, wherein a plurality of input transistors are connected in parallel. A reference transistor connects to the input transistors. A feedback means connects th... | 08/31/1999 |
| 5926040 | Logic circuit An Emitter Coupled Logic (ECL) circuit includes therein a constant potential generating circuit which is comprised of a load resistor, an active pull-down transistor and a constant current source. By containing the constant potential generating circuit wh... | 07/20/1999 |
| 5894231 | High speed bi-MOS logic circuit operative under low power voltage First and second inverting stages and first and second decoding stages form in combination a decoder circuit, each of NAND gates of the first and second decoding stages and each of inverters of the first and second inverting stages are implemented by bi-M... | 04/13/1999 |
| 5834964 | Lateral PNP fast turn-on circuit A control circuit for providing fast turn on of a PNP transistor in which a capacitor charging current is boosted and provided to the base of the PNP transistor. An embodiment of the invention provides a current amplifier in parallel with a current source... | 11/10/1998 |
| 5828237 | Emitter coupled logic (ECL) gate and method of forming same A fully differential, low voltage ECL gate (300) receives complementary logic signals (A, Ax, B, Bx) and provides them to first and second differential pairs (306, 318). Collectors from different differential pairs (306) and (318) are coupled together and... | 10/27/1998 |
| 5781035 | Dual-differential-pair emitter-coupled logic complementary-output circuit A complementary-output vertically-stacked ECL gate circuit is disclosed which is low in power dissipation and fast in operation. The ECL gate circuit has a dual differential pair circuit arrangement provided with a pair of complementary outputs and an act... | 07/14/1998 |
| 5767702 | Switched pull down emitter coupled logic circuits Switched pull down (SPD) ECL circuits have a switching circuit within the pull down portion of the output stage, so that a large portion of the total pull down current is switched to the negative going output node, and so that a small portion of the total... | 06/16/1998 |
| 5763962 | Semiconductor switch driving circuit A high-voltage semiconductor driving circuit to be instantaneously operated for the duration of an arbitrary pulse width can be effectuated through an extremely simple circuit configuration. The circuit comprises a pulse transformer (2) which receives an input... | 06/09/1998 |
| 5754062 | Current switching logic type circuit with small current consumption First emitters of a pair of input multi-emitter transistors are connected to a current source in common, to form an input differential amplifier. The other emitters of the input multi-emitter transistors are connected to current sources respectively. Pull... | 05/19/1998 |
| 5736866 | Active pull-down circuit for ECL using a capacitive coupled circuit Fast fall time for ECL logic waveforms are produced by use of a circuit, which very quickly transfers charge from the ECL output load capacitance into a temporary holding capacitor. The charge transferred onto the temporary holding capacitor may then be r... | 04/07/1998 |
| 5734272 | Differential stage logic circuit An ECL stage has its current consumption adapted to its operation speed. For this purpose, the load resistor and the bias current source are adjustable so that the product of the current value of the source by the resistor value is substantially constant.... | 03/31/1998 |
| 5726587 | BiCMOS tri-state buffer with low leakage current An improved tri-state output buffer having an emitter-follower output stage clamps the reverse-bias voltage across the base-emitter path of an emitter-follower to limit the output leakage current and thereby extending the operating life of an integrated c... | 03/10/1998 |
| 5670893 | BiCMOS logic circuit with bipolar base clamping The invention provides a BiCMOS logic gate circuitry comprising: input and output terminals: an output driving section including two bipolar transistors in the form of totem pole connection between a high voltage line and a low voltage line in which an in... | 09/23/1997 |
| 5614848 | High-speed semiconductor integrated circuit device composed of CMOS and bipolar transistors The semiconductor IC device has a circuit arrangement in which one or more of the circuits, such as on a single substrate, include a totem-pole series connection of bipolar transistors which are driven by arrangements of complementary MOS circuits in a ma... | 03/25/1997 |
| 5610539 | Logic family for low voltage high-speed applications A new logic family is identified that achieves much better speeds than CML logic gates. This new logic family operates with multiple inputs and a single logic level, using differential pairs of transistors for each input transistor of the multiple input. ... | 03/11/1997 |
| 5602498 | Current switching logic type circuit with small current consumption An emitter-coupled logic circuit having superior drivability, stable operation, and obtaining complementary outputs. A pair of input differential transistors have their emitters coupled to a first current source in common, their bases connected to receive... | 02/11/1997 |
| 5596295 | In-phase signal output circuit, opposite-phase signal output circuit, and two-phase signal output circuit In an output circuit, a signal /$c; opposite in phase to a signal /EN inputted through an input terminal 3 is generated by an inverter 1, and a signal $c; in phase with the signal /EN is generated by two inverters 8 and 2. When the input signal /EN ... | 01/21/1997 |
| 5574391 | ECL integrated circuit allowing fast operation In an ECL circuit, when a potential of an input signal A changes from "L" to "H", an output signal D correspondingly changes from "H" to "L", and, at this time, an output sent from a switching stage circuit is supplied to a gate of a PMOS transistor via a... | 11/12/1996 |
| 5572152 | Logic circuit with the function of controlling discharge current on pull-down and emitter coupled logic circuit A first current switch circuit 1a outputs a first logic signal and a complementary signal thereof in response to an input logic signal. A pull-up transistor Q10 has a base receiving the first logic signal. A second current switch circuit 1b outputs a seco... | 11/05/1996 |
| 5570044 | BiCMOS output driver with reduced static power consumption A BiCMOS power driver circuit for interfacing to a bus comprises circuitry for channelling current from a power source to the base of a bipolar device to pull the output all the way down to within a bipolar VSAT voltage drop of ground, and then... | 10/29/1996 |
| 5561388 | Semiconductor device having CMOS circuit and bipolar circuit mixed In a semiconductor device where a CMOS circuit and a bipolar circuit are mixed, the bipolar circuit is operated between a first power supply voltage and a second power supply voltage, and the CMOS circuit and a level conversion circuit between a CMOS leve... | 10/01/1996 |
| 5559451 | Bicmos push-pull type logic apparatus with voltage clamp circuit and clamp releasing circuit In a push-pull type logic apparatus including a push-pull buffer formed by two bipolar transistors, a control circuit for turning ON one of the bipolar transistors and turning OFF the other, and a voltage clamp circuit for clamping the voltage of the base... | 09/24/1996 |
| 5514984 | Active pull down type ECL apparatus capable of stable operation In an active pull down ECL apparatus including a current switch formed by an input transistor and a reference transistor, an emitter follower controlled by a collector voltage of the input transistor or the reference transistor, and an active pull down ci... | 05/07/1996 |
| 5485106 | ECL to CMOS converter An efficient high-speed ECL to CMOS logic converter for BiCMOS integrated circuits. In one embodiment, a differential amplifier compares an ECL input signal to an ECL reference voltage and generates a pair of complementary intermediate signals on a corres... | 01/16/1996 |
| 5481216 | Transistor drive circuit with shunt transistor saturation control A drive transistor has its base coupled to a circuit input and its collector coupled to provide an output current at a circuit output. The output current is responsive to a base current received at the base of the drive transistor. A voltage induced acros... | 01/02/1996 |
| 5457412 | Semiconductor integrated circuit device including input circuitry to permit operation of a Bi-CMOS memory with ECL level input signals A semiconductor integrated circuit device is provided for permitting operation of a CMOS or BiCMOS memory with ECL level input signals, in which operating speed is increased and power consumption is reduced. Input signals of ECL levels are received by an input... | 10/10/1995 |
| 5434515 | Logic circuit in which improvement is made about a transition speed and current consumption For increasing an operation speed of a logic circuit in a case where an output level is shifted from a high level to a low level, a control circuit is made of a combination of a first control transistor and a second control transistor. An input circuit ha... | 07/18/1995 |
| 5428305 | Differential logic level translator circuit with dual output logic levels selectable by power connector options Switching between two logic circuits that produce outputs at different respective logic levels is accomplished by means of a common input differential switch that has a branch in each logic circuit. A common current source supplies current to the branches... | 06/27/1995 |
| 5365117 | Logic gates having fast logic signal paths through switchable capacitors Switchable diffused junction capacitors providing selectable data signal paths in a logic gate. A control circuit, such as a current switch, renders one of the junction capacitors conductive to present a large diffusion capacitance which acts as a fast si... | 11/15/1994 |
| 5363332 | Current-driven signal interface implemented in semiconductor integrated circuit device A semiconductor integrated circuit device is arranged to have a plurality of logic circuit blocks, a data signal path for interconnecting logic circuit blocks and for providing a function of interfacing a current-driven signal. The logic circuit block on ... | 11/08/1994 |
| 5343092 | Self-biased feedback-controlled active pull-down signal switching High speed, low power signal switching logic implementable in bipolar or BiCMOS technology is described. Signal switching is between a first prescribed state and a second prescribed state and is accomplished using a conventional active signal pull-up circ... | 08/30/1994 |
| 5338980 | Circuit for providing a high-speed logic transition An ECL gate (32) includes a speedup circuit (34) comprising an NPN transistor (36) having its base connected to the IN signal to the gate (32). The PNP transistor drives an NPN transistor (40) to provide faster output transitions responsive to low-to-high... | 08/16/1994 |
