MC74HC161AN

Timing:	Synchronous
Base Part Number:	74HC161
Supplier Device Package:	16-DIP
Package / Case:	16-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2V ~ 6V
Trigger Type:	Positive Edge
Count Rate:	167MHz
Series:	74HC
Reset:	Asynchronous
Number of Bits per Element:	4
Number of Elements:	1
Direction:	Up
Logic Type:	Binary Counter
Part Status:	Obsolete
Packaging:	Tube

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MC74HC161AN Application Field and Working PrincipleMC74HC161AN is a 4-bit synchronous binary counter which can count from 0 to 15. It is a high-speed CMOS logic ICs, and its applications mainly include logic - counters, dividers, frequency dividers, ring counters, etc.Logic - CountersMC74HC161AN is widely used in logic counters because of its high-speed operation. A four-bit synchronous binary counter can count from 0 to 15. This binary counter can be used to count the number of pulses received by the counter, or to act as an up/down counter. The counting sequence is determined by the clock edge, which can either be positive or negative.The counter has four outputs which consist of four flip-flops. Each time there is a pulse, the output of each flip-flop will depend on whether the clock edge is a rising or falling edge. For a rising edge, the output will increment by one and for a falling edge, the output will decrement by one. DividerThe MC74HC161AN can also be used as a divider. A divider is a circuit which divides the frequency of a signal by a certain amount. For example, if the input frequency is 16 Hz, the MC74HC161AN can be used to divide this frequency by four, thus resulting in an output frequency of 4 Hz. The MC74HC161AN can be used to divide the frequency of a signal by up to 15. Frequency DividerThe MC74HC161AN can also be used as a frequency divider. A frequency divider is a circuit which divides the frequency of a signal by a certain amount. The output frequency of the divider is dependent on the input frequency and the frequency divider ratio. For example, if the input frequency is 32 Hz and the frequency divider ratio is 4, then the output frequency of the divider will be 8 Hz. The frequency divider ratio can vary from 0 to 15, depending on how many counter stages are used. The MC74HC161AN can be used to divide the frequency of a signal by up to 15. Ring CountersThe MC74HC161AN can also be used as a ring counter. A ring counter is a circuit which cycles through a sequence of outputs. Each time the counter is triggered, the output of the counter will rotate or move around the ring, which is dependent on the clock edge. For example, a four-bit synchronous ring counter can cycle through four outputs in a clockwise direction if the clock edge is positive. A four-bit synchronous ring counter can cycle through four outputs in a counterclockwise direction if the clock edge is negative. The MC74HC161AN can be used to create a ring counter with up to 15 outputs. Working PrincipleThe MC74HC161AN is a CMOS logic device which operates at high speed. The device consists of four flip-flops which are connected in a sequential manner. Each time the input is triggered, the output pulses shift according to the clock edge. For a rising edge, the output will increment by one and for a falling edge, the output will decrement by one. The MC74HC161AN can be used for a variety of applications, including logic - counters, dividers, frequency dividers, and ring counters. The device is capable of counting up to 15, dividing the frequency of a signal by up to 15, and creating a ring counter with up to 15 outputs.

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