MC74HC4046AF

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The MC74HC4046AF is a CMOS integrated circuit designed to help with frequency synthesis and clock generation. It is included in the Clock/Timing - Clock Generators, PLLs, and Frequency Synthesizers category by Texas Instruments. This circuit contains two phase locked loops (PLL) which allow it to generate frequencies using a VDD input. This allows it to generate digital clocks at frequencies far higher than the crystal oscillators that provide the input.

The MC74HC4046AF has two basic application fields. The first is in analog to digital (A/D) conversion. Digital-to-analog (D/A) converters also make use of this technology to help match the sampling rate of the A/D converters with the data rate of the D/A converters. This allows for improved precision and allowed for the creation of faster and more advanced digital systems.

The second application field for the MC74HC4046AF is in frequency synthesis. By providing a VDD input frequency, the MC74HC4046AF can synthesize digital clocks at frequencies far higher than the input frequency. This allows for the creation of digital radio frequency (RF) receivers and transmitters, as well as systems that must operate with multiple clock frequencies.

The MC74HC4046AF utilizes one of the two PLLs within its circuit to synthesize digital clocks. The way in which this works is fairly simple. The divider of the first loop determines the input frequency to the second PLL. The inner loop then multiplies this frequency by a factor of two, and the output of this loop is then used as the output frequency of the circuit. This allows for the creation of generated clocks at frequencies far higher than the originating frequency.

The MC74HC4046AF offers a number of features that make it stand out from other similar circuits. It has a low-power operation, low-noise, and improved safety features. The circuit is also protected from over-voltage and over-current conditions, making it more reliable and longer-lasting. In addition, the MC74HC4046AF is also protected against temperature extremes, making it ideal for applications in extreme environments.

The MC74HC4046AF is an ideal solution for those looking for a reliable, cost-effective way to generate digital clocks higher than the input frequency. Its two PLLs enable it to accurately synthesize these frequencies and its robust design ensures reliability and durability in even the most extreme conditions.

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