74AC251MTCX

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Logic-signal switches, multiplexers and decoders are common signal routing devices used to provide alternative paths for signal flow control and signal level virtualization. By controlling the logic levels of the signal inputs, signal inputs can be altered or suppressed from the component outputs.

The 74AC251MTCX is a logic signal switch which belongs to an Advanced CMOS logic family. This device is designed for use in low-voltage, high-speed switching applications. It also operates with typical ranges for power supply Vin of 3.0 - 3.6V, Vdd of 3.5 - 4.5V and with maximum output loading of 10mA.

The 74AC251MTCX has a low ON-state resistance which enables high-speed ON/OFF switching of the logic signals. It has 5-bit input (A0-A4) and a single output line (Z). It has an enable-input which is also referred to as E (active-high, active-low).The logic signals are routed to the output by a multiplexer which is enabled by the enable line E. When the enable line is at logic-high, the output is routed from the select input S0, otherwise when the enable line is logic-low, the output is routed from the input A4. The device has two active-low reset (R) inputs for resetting the device.

The 74AC251MTCX’s output stage is composed of an open-collector NPN transistor for sinking current to ground. It also has an internal Schmitt-trigger action and can accept slow-moving input signals or fast-moving input signals. The output can drive 10mA loads with a voltage drop of 350mV.

The 74AC251MTCX is used in many applications requiring logic switching, multiplexing and resetting of data. It is typically used in applications such as switch controllers, current sensors, register file, ADCs, and motor control applications. It is also used in applications requiring signal routing, virtualization, and data buffering.

In summary, the 74AC251MTCX belongs to the Advanced CMOS family and is used in low-voltage, high-speed switching applications. Its features include a low on-state resistance for high-speed signal switching, an enable line for controlling the multiplexer, and an open-collector NPN transistor for output current sinking. It is commonly used in signal routing, data buffering, and buffering applications.

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