74FST3384DTR2

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The 74FST3384DTR2 is a low power dual 4-to-1 data selector/multiplexer device that enables the selection of one of two sets of four data inputs to be routed to a common output. This device operates from a single +3.3V supply and is characterized for operation from 0°C to 70°C.The device is ideal for systems using a variety of data formats including TTL, ECL logic levels, and those operating from buses such as SBus and SONET. It is commonly used in communications applications such as telephone switching, multiplexers and modems.

The 74FST3384DTR2 consists of two 4-to-1 multiplexers arranged in two banks. Each multiplexer accepts two active low data inputs and two active high data inputs and routes the selected data to a common active low output. Each multiplexer is controlled by a common selection line. A functionally equivalent 16-pin device, the 74FST3384D, is available in the same switched-current technology and features two banks of data selectors with the same control line shared.

The 74FST3384D/DTR2 multiplexers feature a 3.3-V power supply and are pin-compatible with the industry-standard 74FST3384, enabling designers to upgrade existing systems from 5 V to a low-voltage design without disturbing the application (FIGURE 1). The 74FST3384DTR2 multiplexers are a good choice for system designs operating at 3.3 V.

The 74FST3384DTR2 is suited for use in a wide range of applications. The device is ideal for data communications, audio and video distribution and multiplexing, memory and data buffer management, as well as other digital signal conditioning applications. The multiplexer has a high impedance state on the output when all control inputs are placed in high impedance (Z) state. This enables the output to remain in a tri-state situation while the device is enabled. The multiplexer can be used in smaller mobile devices, as it only consumes 0.9mA (max). The device has a package design that helps in reducing PCB space for smaller sizes and further reducing power consumption.

The 74FST3384DTR2 multiplexer is a logic device that can be used to select and route specific signals, with minimal degradation in signal integrity. It works by having multiple inputs (four in this case), with each input connected to a data line. A control signal is then used to select which input to route to the output. For example, if the control signal is a “1”, the first input is selected, if the control signal is a “0”, the second input is selected. The multiplexer allows for two signals to be combined, to form an output signal. Its main advantage is that it uses less components and less power than other switching devices.

The 74FST3384DTR2 is a versatile multiplexer that can be used in a variety of applications. It is particularly useful for system designs operating at 3.3V and its low power consumption allows for increased system efficiency. The device also offers high-impedance state for its outputs, enabling signal routing without signal loss.

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