摘要:
A base-coupled logic gate is characterized by input Schottky diodes that are directly formed on the base region of the switching transistor for the gate. A logic of this type provides flexible circuit arrangements and savings in required area, while achieving very high speeds. As a result of the savings in area, the buried layer capacitance of the gate is also reduced, which facilitates the high-speed operation of the circuit.
摘要:
A method for inhibiting out-diffusion of dopants from polycrystalline or single crystal silicon substrates of high speed semiconductor devices into metal silicide conductive layers disposed on the substrate comprises interposing a refractory metal nitride layer between the doped silicon substrate and the refractory metal silicide conductive layer. Dopant out-diffusion is further retarded, and contact resistance lowered, by adding a thin layer of refractory metal between the refractory metal nitride layer and the silicon substrate.
摘要:
The present invention relates to a method and apparatus for forming a ball bond between a fine wire such as aluminum wire and a surface with the ball bond being approximately radially symmetric about a principal axis of a portion of the wire. The apparatus may include a plurality of electrodes radially spaced about the wire to define gaps between each electrode and the tip of the wire and a plurality of resistance elements. A voltage source may be connected to form a circuit consisting of plural electrically parallel legs, each of which includes the series combination of a resistance element, an electrode and an arc path between the electrode and the tip of the wire. A molten ball is formed at the end of the wire when arcs are essentially simultaneously produced between the electrodes and the tip of the wire. In a preferred embodiment, the resistances of the resistance elements are approximately equal. In addition, the plurality of electrodes are preferably symmetrically spaced about the wire to define gaps of nearly equal length between each electrode and the tip of the wire.
摘要:
An argon-fluorine (ArF) excimer laser is used to selectively heat various Si.sub.3 N.sub.4 materials used in the manufacture of semiconductor devices to elevated temperatures while maintaining active device regions and electrical interconnects at relatively low temperatures, to, for example, anneal the structural layer, induce compositional changes or densification and/or flow of the silicon nitride-based material to round off sharp edges and stops, all without damaging or appreciably affecting the active regions and electrical interconnects of a semiconductor device.
摘要翻译:氩 - 氟(ArF)准分子激光器用于将制造半导体器件中使用的各种Si 3 N 4材料选择性地加热到升高的温度,同时保持有源器件区域和电互连在相对低的温度下,例如退火结构层, 引起氮化硅基材料的组成变化或致密化和/或流动以使尖锐的边缘和停止,从而不破坏或明显地影响半导体器件的有源区和电互连。
摘要:
A method and system for loading test data into individual pin memories of an automatic digital test system, particularly of the in-circuit type. Test data in the form of test vectors are accessed from a test vector store simultaneously with the access of a digital test pin selection signal. The test pin selection signal accessed with the test data is then used to selectively load the test data into a pin memory identified by the pin selection signal, thereby permitting the loading of test data into any one of a group of individual pin memories. In the preferrred embodiment the test data, a test vector, is stored in a test vector store in association with a test pin selection signal. When the test vector is read from memory, the test pin selection signal is also read by the same address signal.
摘要:
An SPS CCD memory using two phase clocking in the serial registers and ripple clocking in the parallel registers with interlacing transfer of charge in the parallel registers to the output serial registers. First alternate parallel registers are coupled to the output register through first transfer gates and first storage gates, and second alternate parallel registers are coupled to the output register through second transfer gates and second storage gates. Third storage gates are provided with each third storage gate alternately receiving charge from a first storage gate and a second storage gate with the third gate delivering the charge to the same storage element of the output register. By linearly staggering the endmost gates of the first alternate parallel registers and the second alternate parallel registers, the interlacing of charge occurs at the endmost gate of the parallel registers.
摘要:
A process and resulting structure are disclosed for forming vias in integrated circuit structures using metal silicide interconnections. A lower conductor is formed by sequentially depositing silicon and a refractory metal which reacts with the silicon to create a layer of metal silicide. A subsequent layer of silicon is deposited on the surface of the metal silicide. This layer of silicon is insulated from overlying layers by forming insulating material over desired regions of the layer of silicon. A second layer of metal is then deposited across the structure. In openings in the insulating material the metal reacts with the second layer of silicon to form a via of metal silicide. A final layer of silicon may be deposited to convert any remaining metal in the second layer of metal to metal silicide, and the structure annealed to lower its resistivity.
摘要:
An improved tristate enable circuit is described for activating a tristate enable gate to maintain the high impedance third state of a common bus tristate output device during "power down" and "power up" transitions of the common power supply V.sub.cc. The enable gate circuit element tends to turn off at a voltage level V.sub.cc2 generally greater than the voltage level V.sub.cc3 at which the tristate output device circuit elements turn off. As a result the high impedance state may be lost during "power down". A threshold activation circuit is coupled to the enable gate for activating the enable gate when the threshold activation circuit senses a higher common power supply voltage level V.sub.cc1. The threshold activation circuit operatively activates the enable gate over a voltage range from V.sub.cc1 to a lesser common power supply voltage level V.sub.cc4. Component values are selected for relating the voltage levels so that V.sub.cc1 >V.sub.cc2 and V.sub.cc3 >V.sub.cc4. As a result the turn off of circuit elements is sequenced by the threshold activation circuit.
摘要:
A programmable address buffer for coupling external addresses to a desired pair of internal memory addresses includes A and B address inputs 11 and 12, a B address output 15 coupled to the B address input 12, a first inverter I30 coupled to the B address input and a B address output, a first switch S2 coupled to switchably connect one of the A and B address inputs 11 and 12 to a node, an A address output coupled to the first node, a second inverter I10 connected to the first node, a third inverter I20 connected between the second node and an A output 14, and a second switch S1 coupled to the second node to switchably connect one of the first node or the second inverter I10 to the second node.In another embodiment an electrical circuit for controlling the addressing of functional sections of a partially functional product includes a first pin 100 coupled by a first fuse F.sub.1 to a first address buffer 150, and a second pin 110 coupled by a second fuse F.sub.5 to a second address buffer 160, a fusible connection F.sub.4 between the second pin 110 and the first buffer 150, and fusible connections F.sub.2, F.sub.3, F.sub.6, and F.sub.7 to each address buffer to connect that address buffer to either of two selected potentials corresponding to the desired state of that buffer.
摘要:
A circuit for detecting a difference in the relative magnitudes of two voltages includes a current sensing circuit connected between the first voltage and ground to thereby cause a first current to flow in the current sensing circuit, an amplifier connected between the second voltage and ground and connected to the current sensing circuit to thereby cause a second current to flow, the second current being equal to the first current when the first voltage is equal to the second voltage, and a variable impedance inverter connected to the first voltage and connected to the amplifier, the variable impedance being controlled by the first voltage, the output of the inverter thereby being related to the difference between the first voltage and the second voltage. The invention is particularly useful for controlling a battery backup power supply in a microprocessor having a volatile memory and for creating precision delay circuits.