The MC74AC4040MELG is an integrated circuit component manufactured by ON Semiconductor. This device is a 12-stage binary ripple counter with a built-in oscillator for stable and reliable operation. It is a member of the 74AC series, which is a popular family of high-speed CMOS logic components.
Key Features:
1. Binary Ripple Counter: The MC74AC4040MELG is designed to count in binary format. It has 12 stages of counters, allowing it to count up to 4095 (2^12 - 1) before rolling over to zero. Each stage acts as a divide-by-2 counter, making it suitable for applications requiring frequency division.
2. Oscillator Input: This IC includes an oscillator input pin (OSC) that enables the internal oscillator. By connecting an external resistor and capacitor to the OSC pin, users can set the clock frequency of the counter. The range of the oscillator typically lies from a few hertz to several megahertz, depending on the values of the external components.
3. Reset Function: The MC74AC4040MELG offers a reset input (MR). When this pin is pulled low, it asynchronously resets all the internal counters to zero. This feature provides a means for manual or external control over the counter, allowing the counting sequence to start from the beginning
