Abstract: A semiconductor circuit is disclosed which contains a driving circuit which is integrated into a semiconductor substrate of a first conductivity type and includes positive voltage switching transistors for switching positive and/or zero voltage levels and negative switching transistors for switching negative and/or zero voltage levels. In addition, the driving circuit contains a control circuit which is positioned upstream from the driving circuit and is also embodied in the semiconductor substrate, which is connected to a substrate voltage. A negative voltage switching transistor of the driving circuit is configured inside an outer well which is embedded in the semiconductor substrate and is of a second conductivity type which is opposite to the first, and the outer well is connected to a supply voltage.

Abstract: An integrated buffer circuit includes a first series circuit connected between a first supply potential and a second supply potential (ground). The first series circuit has a voltage-controlled first constant current source, a first field effect transistor having a gate forming an input of the buffer circuit, a circuit node between the first current source and the first field effect transistor forming an output of the buffer circuit, and a first control input for controlling the first current source with a reference potential having a constant potential difference relative to the first supply potential. A second series circuit is connected between the first supply potential and the second supply potential.

Abstract: An integrated semiconductor circuit includes word lines and bit lines. A memory region has at least one memory cell field with memory cells addressable through the word lines and the bit lines, and a number of evaluator circuits corresponding to the number of the bit lines. Each of the evaluator circuits is connected with one of the bit lines and divides the one bit line into two at least approximately identical bit line halves. Logic units of a block perform digital processing of data read-out of the memory region through the bit lines and evaluated. Each of the logic units is connected to the two bit line halves of one of the bit lines. Various operating modes of the block of logic units are selected with mode select signals.

Abstract: An integrated semiconductor memory includes a memory cell field having memory cells disposed in matrix form, word lines and internal bit lines forming pairs of internal bit lines for triggering the memory cells. Internal weighting circuits are each assigned to a respective one of the internal bit line pairs. An external pair of bit lines is commonly assigned to the internal bit lines. Pairs of separation transistors are each assigned to a respective one of the internal bit line pairs for electrical separation of the respective internal bit line pair from the external pair of bit lines. A bit line decoder triggers the pairs of separation transistors. An external weighting circuit is provided. A discriminator device and a precharging device are connected to the external bit line pair. The internal bit lines of each pair of internal bit lines are triggered separately from one another.

Abstract: An integrated semiconductor memory of the DRAM type includes word lines and bit line pairs. Memory cells in a matrix are connected to the word lines and the bit lines. One evaluator circuit per bit line pair is connected to the bit lines. Each of the bit line pairs is divided into one bit line and one reference bit line during operation. A control line is provided. At least one coupling capacitor is provided for each of the bit lines and each of the reference bit lines having a first lead connected to the bit line pair and a second lead connected to the control line. A method for testing an integrated semiconductor memory of the DRAM type includes reading data stored in memory cells out of the memory cells, precharging bit line pairs to a precharge level before reading out, and feeding an additional potential to each bit line pair after precharging.

Abstract: A circuit gives each of the input signals at its inputs to a common circuit previously charged to a supply voltage through transfer transistors. When the logical condition is satisfied the common circuit remains charged; otherwise the charge changes. This is detected by a discriminator circuit and the result is indicated at the circuit output. The circuit may be of AND-, OR-, NAND- and NOR design.

Abstract: A circuit configuration and method for testing storage cells of an integrated semiconductor memory precharges a pair of external bit lines to mutually complementary logic levels. All of the storage cells of a word line are always read-out in parallel. In a "no fault" situation the pair of external bit lines retains its precharge level, whereas in the case of a fault, the level of the external bit line which is precharged to logical 1 falls. This is recognized by a discriminator circuit and analyzed.

Abstract: A redundancy decoder of an integrated semiconductor memory having a plurality of decoder stages containing a switching transistor and a separable connection having respective conditions in which the separable connection is severed and intact, as well as at least one charging transistor, comprising, in each of the decoder stages, an addressing circuit connected to and between the switching transistor and the separable connection of the respective decoder stages, the addressing circuit being electrically simulatable when the respective separable connection is in the intact condition thereof.

Abstract: A multi-stage integrated decoder device has a special function which facilitates the simultaneous activation of a plurality and as many as all of its outputs. When it is used as a bit line decoder it is thus possible to activate a plurality and as many as all of the bit lines (including any redundant bit lines) of a block of storage cells of a semiconductor memory.

Abstract: In a circuit configuration and a method for testing storage cells, all of the bit lines lead to one pair of fault lines which is first precharged with mutually-complementary logic levels. All of the storage cells of a word line are always read-out in parallel relative to one another. In the event of "no fault" the pair of fault lines retains its logic states, whereas in the case of a fault one of the fault lines changes its logic state through switching transistors. This is recognized and analyzed by a comparator circuit in the form of an XOR-circuit or an XNOR-circuit.

Abstract: A method and circuit configuration for the parallel input of data items in the form of a test pattern into a block of a semiconductor memory having a plurality of storage cells. For test purposes, data items are simultaneously input in parallel into the storage cells.

Abstract: A multi-stage, integrated decoder device includes a special function which facilitates the simultaneous activation of a plurality or as many as all of its outputs while gating out a pre-selectible output. When used as bit line decoder, it is thus possible to activate a plurality or up all of the bit lines (including any redundancy bit lines) of a block of storage cells of a semiconductor memory, excluding a bit line assumed to contain at least one defective storage cell.

Abstract: A digital amplifier configuration in integrated circuits for the amplification of a voltage change includes a digital amplifier. The digital amplifier couples pairs of bit lines extended beyond the permissible capacity thereof to extensions of the pairs of bit lines.

Abstract: An integrated semiconductor memory includes a memory cell field having memory cells disposed in matrix form, word lines and internal bit lines forming pairs of internal bit lines for triggering the memory cells. Internal weighting circuits are each assigned to a respective one of the internal bit line pairs. An external pair of bit lines is commonly assigned to the internal bit lines. Pairs of separation transistors are each assigned to a respective one of the internal bit line pairs for electrical separation of the respective internal bit line pair from the external pair of bit lines. A bit line decoder triggers the pairs of separation transistors. An external weighting circuit is provided. A discriminator device and a precharging device are connected to the external bit line pair. The internal bit lines of each pair of internal bit lines are triggered separately from one another.