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The 54ACT161JRQMLV is a 4-bit synchronous binary counter with an asynchronous master reset. It is housed in a 16-pin ceramic flat package (J-lead) and belongs to the military-grade QMLV level production. 2. Functions: - Synchronous counting up to 16 - Presettable using the parallel load (PL) input - Asynchronous master reset (MR) input - Parallel enable (PE) input for loading data - Parallel data inputs (A-D) for setting the initial count - Synchronous count enable (CE) input 3. Applications: - Frequency division and counting applications - Clock division circuits - Event and pulse counting - Industrial control systems - Military and aerospace applications due to QMLV certification 4. Alternative Components: - 74ACT161: Similar 4-bit binary counter from the ACT family with slightly different specifications - SN54LS161A: A 4-bit synchronous counter IC from the LS family with different performance characteristics 5. Embedded Modules: The 54ACT161JRQMLV can be integrated into larger digital systems to provide counting and frequency division functionalities. It can be combined with other logic gates, flip-flops, and microcontrollers to build more complex circuits. Related Q&A: Q1: Can the 54ACT161JRQMLV be used as a frequency divider? A1: Yes, the 54ACT161JRQMLV can be used as a frequency divider by connecting the output to the clock input and selecting the appropriate counting configuration. Q2: How does the synchronous presetting feature of the 54ACT161JRQMLV work? A2: The synchronous presetting allows you to set the initial count value by applying the desired input data to the parallel data inputs and then loading it synchronously into the counter with a pulse to the PL pin. Q3: What is the maximum clock frequency supported by the 54ACT161JRQMLV? A3: The maximum clock frequency supported by the 54ACT161JRQMLV is determined by its internal propagation delays and setup times, typically in the range of tens to hundreds of megahertz. Q4: Can the 54ACT161JRQMLV be cascaded to create a larger counter? A4: Yes, multiple 54ACT161JRQMLV chips can be cascaded by connecting the carry output of one chip to the clock input of the next chip to create a larger counter with more bits. Q5: What is the power consumption of the 54ACT161JRQMLV in typical operation? A5: The power consumption of the 54ACT161JRQMLV is relatively low for a high-speed counter IC, typically in the range of a few milliwatts under normal operating conditions.