SN74HC161PWG4

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​The SN74HC161PWG4 is a synchronous counter that can be commonly found in a variety of electronic circuits. It is designed to follow a predictable pattern of counting and has a wide range of application fields such as in digital circuits, counters and clocks, etc. It is capable of counting up to two-hundred sixty-eight and provides the maximum clock frequency of up to 10 MHz.

The SN74HC161PWG4 consists of eight NAND gates and two J-K flip-flops on a single integrated circuit. It\'s designed with a set/reset schematic which allow it to perform as a counter, divider or even a shift register. It has three clock outputs - a divide by 8, a divide by 16, and a divide by 32 - and uses a rising edge, negative-triggered clocking system.

The logic circuit of the SN74HC161PWG4 consists of two basic states which are J and K. When the trigger is set to a positive going pulse, both J and K become low instantaneously and the counter toggles between these two states. This pulse pattern is used in many digital circuits, thus providing a “counting” method in which the number of dwells before the counter rolls over to the next number can be adjusted.

The SN74HC161PWG4 has an extremely low “propagation delay of 4.0 ns,” which means that the response of the counter is virtually instantaneous. When a logic pulse is fed into the counter, it can switch the digital output in a very short period of time. This makes the SN74HC161PWG4 ideal for applications which require the counting of rapidly discrete signals.

The SN74HC161PWG4 also has a “slew rate” feature, which is the time taken for the output of the counter to fall from its high logic level to its low logic level. This ensures that the output of the counter is capable of transitioning quickly enough to accurately count a pulse train with a large number of pulses.

One of the primary application fields for the SN74HC161PWG4 is in digital system clocking. In this application, the SN74HC161PWG4 can be used to count to sixteen, thirty-two or sixty-four as long as there is a simultaneous pulse on its clock output. The IC is also ideal for creating digital dividers, such as dividers that can divide by two or four. The counter can be used to precisely control the frequency of signals and in generating digital clocks which alternate between high and low status.

The SN74HC161PWG4 can also be used in logic circuits, such as a digital synchronizer or a shift register. In a shift register, the SN74HC161PWG4 can be used as a storage element, although due to its short period of storage, it is more suited for smaller register applications.

The SN74HC161PWG4 is a highly versatile counter and it is perfectly suited for any application which requires a fast and reliable counting method. Its quick response, simple structure and adjustable count range make it an ideal choice for a variety of applications. This makes it perfect for all types of digital logic, clocking, counting and division circuits.

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