74ACT11257N

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Logic-Signal Switches, Multiplexers, Decoders is part of the order-relation family of circuits composed of interconnected pulses, gates, transistors and amplifiers used to process information within communication systems, computers and other digital electronic devices.

The 74ACT11257N is a single-input-to-seven-output active high logic circuit. This means that the circuit takes one input and then divides it into seven separate outputs which are each sent to different levels in a power system. Each output has its own voltage level divider from the input to determine the level of current that each output requires. This makes it ideal for applications that require independent power delivery for multiple components. It is most commonly used in power supply rail-splitting applications and voltage-scaling applications.

The circuit consists of three main sections: a logic-sense control section, a multiplexer section, and an open-drain output driver section. The logic sense control section is comprised of three separate, cascaded D-type flip-flops. These serve the purpose of determining which output will be activated; each of the flip-flops can be programmed to different values, allowing the circuit to select any of the seven outputs. The multiplexer section comprises four separate, cascaded multiplexer circuits, each of which is controlled by a single input. The multiplexer circuits allow the 74ACT11257N to select the desired output according to the logic state of each of the four inputs.

The output driver section of the circuit consists of seven independent open-drain output stages, each of which is connected to a respective output. Each of these stages includes an NMOS pass transistor, which can be used to control current flow out and into each output. The output stage allows for greater control over the voltage and current of each output.

The 74ACT11257N is an ideal logic-signal switch, multiplexer and decoder for applications requiring independent power delivery for multiple components. Its low power consumption, cascaded logic-sense control section and output driver section enable it to provide reliable, low power performance. The ability to select and control multiple outputs with ease makes it an optimal choice for digital and analog systems operating in a wide range of temperatures and applications.

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