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The Onsemi MC74AC161N is a 4-bit synchronous binary counter IC with an asynchronous reset pin. It belongs to the family of Advanced CMOS Logic (AC series) and is manufactured by ON Semiconductor. Functions: 1. Binary Counter: Counts the internally generated clock signals in binary form. 2. Synchronous Operation: Updates the count on the rising edge of the clock signal. 3. Asynchronous Reset: Clears the count to zero when the reset pin is activated. Applications: 1. Digital Counters: Used in frequency dividers, timers, and general counting applications. 2. Sequential Logic: Forms the building block for designing sequential logic circuits. 3. Control Circuitry: Provides control and timing functions in microcontrollers, processors, and digital systems. Alternative Components: 1. Texas Instruments SN74HC161: Another 4-bit synchronous binary counter IC. 2. NXP Semiconductors 74HC161: A similar binary counter IC with synchronous operation. 3. STMicroelectronics HCF4042BE: Offers customizable counter functions with a similar pinout. Embedded Modules: The Onsemi MC74AC161N can be effectively integrated into larger systems and circuits using PCB design software to create custom applications with specific requirements. It can interface with other ICs, microcontrollers, or sensors to provide additional functionality. Related Q&A: 1. What is the maximum clock frequency supported by the MC74AC161N? - The MC74AC161N can typically operate up to 100 MHz under recommended conditions. 2. How does the asynchronous reset function work in the MC74AC161N? - When the reset pin is activated (brought low), the counter is immediately cleared to zero, irrespective of the clock signal. 3. Can I cascade multiple MC74AC161N ICs to create a larger counter? - Yes, you can cascade multiple MC74AC161N ICs to create wider counters by connecting the carry output of one IC to the clock input of the next IC. 4. What is the power supply voltage range for the MC74AC161N? - The MC74AC161N typically operates within a voltage range of 2V to 6V. 5. Is the MC74AC161N suitable for low-power applications? - While the AC series is known for power efficiency compared to some older technologies, consider the specific power consumption requirements of your application before final selection.