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W65C22N: This device is fully compatible with the NMOS 6522 produced by MOS Technology and others, and includes current-limiting resistors on its output lines. The W65C22N has an open-drain interrupt output (the IRQB pin) that is compatible with a wired-OR interrupt circuit. Hence the DIP-40 version is a "drop-in" replacement for the NMOS part.
Open drain output uses MOS transistor (MOSFET) instead of BJTs, and expose the MOSFET's drain as output. [ 1 ] : 488ff 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.
A waste weir on a navigable canal is a slatted gate on each canal level or pound, to remove excess water and to drain the canal for repairs or for the winter shutdown. [1] This differs for a dam or reservoir, for which a waste weir is another name for a spillway , i.e. not having the boards to adjust the water height nor the paddles to drain ...
Unused stoplogs stacked on top of the flow control structure at Mendota Pool on the San Joaquin River, California. Stoplogs of a hydro power plant which can close the water flow to the turbine
See also: Diode logic § Active-high AND logic gate Open-collector buffers connected as wired AND.. The wired AND connection is a form of AND gate.When using open collector or similar outputs (which can be identified by the ⎐ symbol in schematics), wired AND only requires a pull up resistor on the shared output wire.
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Rather it continues showing an exponential behavior with respect to the subthreshold gate voltage. When plotted against the applied gate voltage, this subthreshold drain current exhibits a log-linear slope, which is defined as the subthreshold slope. Subthreshold slope is used as a figure of merit for the switching efficiency of a transistor. [2]
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 ...
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