SN74LS157DG4

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Logic signals of digital circuits perform various functions, such as controlling other circuit signals and providing data and instructions to other components. One such device that is used to control and manipulate logic inputs and outputs is the SN74LS157DG4. This device is typically classified into the logic signal switches, multiplexers, and decoders categories.

The SN74LS157DG4 is composed of a pair of quad multiplexer/demultiplexer and high-speed selector circuits. It utilizes four independent single pole double throw (SPDT) switches which switch either one of up to four sources of data to a common destination. The device has sixteen data inputs, A0 to A15, divided into four data input groups, A0-A3, A4-A7, A8-A11, and A12-A15. The four multiplexer/demultiplexer circuits each have four select inputs, B0/B1, B2/B3, B4/B5, and B6/B7. Each group of four bits, B0-B3, B4-B7, etc., selects one of the four corresponding A0-A3, A4-A7, etc., inputs.

The logic equivalent of the device is an 8-to-1 multiplexer. This device is capable of switching any one of eight data bits to an output, depending on the choice of 4 binary input select signals. The output is enabled when an enable signal (E) is activated. The device also contains an active low reset input which allows the user to reset the device to a predetermined state. This reset input overrides all other logic inputs.

The SN74LS157DG4 has low power consumption, high speed operation, and minimal space requirements, making it an ideal component in many digital circuits. Its low quiescent power, typically Icc = 4.5mA, and high speed operation, typically tpd = 8.5ns, make it a great choice for operation in mobile, battery operated devices. Its small size, in package SOP28m makes it an easy fit in many applications. This makes the device a great choice for portable and space-constrained applications.

The SN74LS157DG4 is a great choice for many logic applications ranging from 2-to-1 multiplexers to 4-to-1 multiplexers. Its wide range of applications include data multiplexing, address decoding, and selectable data routing. The device is commonly used in bus and interface switches, control logic, control logic for memory subsystems, and for address decoding for memory systems. It is also used for data logging, bus interfacing and data collection. The SN74LS157DG4 is typically available in a variety of temperature range versions.

The SN74LS157DG4 can be a powerful component in many digital circuits. Its small size and low power consumption makes it a perfect fit in many applications. In addition, its low cost and wide range of applications makes it an ideal choice for digital system designers.

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