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The Fairchild Semiconductor 74ACT161SJX is a synchronous, binary counter IC (integrated circuit) with parallel load capability. It is a 4-bit, presettable counter that can be preloaded with an initial value. The device features a reset function, allowing the counter to be cleared to an initial state. Functions: 1. Binary Counter: Counts in binary from an initial preset value. 2. Parallel Load Capability: Allows presetting the initial count value. 3. Synchronous Operation: Count incrementing synchronized with a clock signal. 4. Reset Function: Clears the counter to the preset value. Applications: 1. Digital Frequency Division: Used in frequency divider circuits. 2. Digital Counting: Suitable for various counting applications. 3. Sequence Generation: Generates specific count sequences. 4. Industrial Control Systems: Employed in equipment with digital control functions. 5. Automated Test Equipment: Used for test sequence generation and counting. Alternative Components: 1. 74LVC161: Low-power CMOS alternative with similar functionality. 2. CD40161B: CMOS presettable binary counter IC. 3. 74HC161: High-speed CMOS alternative for synchronous counting applications. Embedded Modules: - Clock Generator: Provides clock signals for synchronous counting. - Input Register: Handles parallel data loading for presetting the counter. - Reset Circuit: Implements the reset function for clearing the counter. Related Q&A: 1. What is the maximum clock frequency the Fairchild Semiconductor 74ACT161SJX can support? 2. How does the parallel load functionality work in the 74ACT161SJX IC? 3. Can you explain the synchronous operation of the 74ACT161SJX in digital counting applications? 4. What are the typical power supply voltage and current requirements for the 74ACT161SJX IC? 5. Are there specific timing requirements that need to be considered when using the 74ACT161SJX in a counting application?