49FCT3805PYG

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The 49FCT3805PYG is a programmable clock buffer device that helps distribute clock signals in various fields or applications. It is a commonly used clock and timing device, most typically falling under the clock buffers, drivers category. This article takes a closer look at the 49FCT3805PYG and its various application fields, as well as its working principles.

The 49FCT3805PYG is a single output-stage clock fanout buffer that can be programmed with up to 16 different output waveforms. It operates from a single or two supplies, with a voltage range of 1.4V to 3.465V. This clock fanout buffer offers an output frequency range of DC to a maximum of 166.6MHz. It utilizes a conventional CMOS technology and is available in a variety of packages, including TQFP100 and TSSOP100.

Featuring a wide range of applications, the 49FCT3805PYG can be utilized to divide, double, or multiply the frequency of input clocks even when multiple devices are cascaded. This can be especially useful for microprocessor systems, clock recovery networks, or communications buses. It is also suitable for FPGA or ASIC applications.

On top of its general applications, the 49FCT3805PYG also offers an error flag, which can be used to warn users when a non-lock condition is present. This non-lock warning is able to detect and alert users when the input frequency is outside of the design window or when an external device is damaged.

In addition to its wide range of application fields, the 49FCT3805PYG also has an underlying working principle. First, the 49FCT3805PYG uses programmable logic to correctly direct the clock up to three times faster. It also uses a phase-locked loop or PLL to generate two sets of outputs - one for the rising edge, and one for the falling edge. The frequency of the output clocks is twice that of the input clock.

Finally, the PLL can be synchronized with an I2C bus or SPI bus to program the device for various applications, including for four and two sets of outputs, with each frequency up to 166.6MHz. The 49FCT3805PYG also features a programmable output enable function and provides a digital lock and digital non-lock indication to the user.

Overall, the 49FCT3805PYG is a programmable clock buffer that is primarily used in clock and timing applications, most often falling into the category of clock buffers, drivers. Its primary application fields include microprocessor systems, clock recovery networks, communications buses, FPGA and ASIC applications, and wider clock distributions. It utilizes a conventional CMOS technology and has a wide range of associated working principles.

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