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  2. Open collector - Wikipedia

    en.wikipedia.org/wiki/Open_collector

    An nMOS open drain output connects to ground when a high voltage is applied to the MOSFET's gate, or presents a high impedance when a low voltage is applied to the gate. The voltage in this high impedance state would be floating (undefined) because the MOSFET is not conducting, which is why nMOS open drain outputs require a pull-up resistor ...

  3. Push–pull output - Wikipedia

    en.wikipedia.org/wiki/Push–pull_output

    A Single Ended Push–Pull (SEPP, SRPP or mu-follower [10]) output stage, originally called the Series-Balanced amplifier (US patent 2,310,342, Feb 1943). is similar to a totem-pole arrangement for transistors in that two devices are in series between the power supply rails, but the input drive goes only to one of the devices, the bottom one of ...

  4. Wired logic connection - Wikipedia

    en.wikipedia.org/wiki/Wired_logic_connection

    Open-emitter buffers connected as wired OR. See also: Diode logic § Active-high OR logic gate. The wired OR connection electrically performs the Boolean logic operation of an OR gate using open emitter or similar inputs (which can be identified by the ⎏ symbol in schematics) connected to a shared output with a pull-down resistor. This gate ...

  5. Transistor–transistor logic - Wikipedia

    en.wikipedia.org/wiki/Transistor–transistor_logic

    A disadvantage of the "totem-pole" output stage is the decreased voltage level (no more than 3.5 V) of the output logical "1" (even if the output is unloaded). The reasons for this reduction are the voltage drops across the V 3 base–emitter and V 5 anode–cathode junctions.

  6. MOS Technology 6522 - Wikipedia

    en.wikipedia.org/wiki/MOS_Technology_6522

    The NMOS 6522 has an open drain IRQ output that may be used in wired-OR interrupt circuits. The WDC W65C22S, in contrast, has a totem pole IRQ output that must be isolated from a wired-OR circuit by a Schottky diode, due to the fact that the totem pole output actively drives the IRQ pin high when the W65C22S is not interrupting. This specific ...

  7. 6,000-year-old wood carving could solve Stonehenge mystery

    www.aol.com/prehistoric-timber-totem-pole...

    Archaeological investigations, carried out just 100 metres north of Stonehenge back in the 1960s suggest that a series of giant totem-pole-like timber obelisks had been erected there some 5,500 ...

  8. List of 7400-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_7400-series...

    Output column – a blank cell means a "totem pole" output, also known as a push–pull output, with the ability to drive ten standard inputs of the same logic subfamily (fan-out N O = 10). Outputs with higher output currents are often called drivers or buffers.

  9. The Troubled-Teen Industry Has Been A Disaster For Decades ...

    testkitchen.huffingtonpost.com/island-view

    The Troubled-Teen Industry Has Been A Disaster For Decades. It's Still Not Fixed.