SI53325-B-GQR

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The SI53325-B-GQR is an extremely versatile timing product which is seen used in a range of applications. Often found embedded in microprocessor systems, this clock buffer serves a number of different functions and provides a reliable clocking solution. To fully understand its functionality, it is important to consider both its application field and its working principle.

Application Field

The SI53325-B-GQR clock buffer is mainly used for memory, peripheral and system clocks. Its main purpose is to act as an interface between two or more pieces of digital circuit. This device has a clock frequency range from 5 to 250 MHz and can be used for applications that require synchronization between fast, digital systems. It can accept both differential and single-ended outputs and has a wide range of phase-locked loop (PLL) applications due to its ability to convert an incoming clock signal into multiple copies with either same or different phase or frequency. This is achieved without any external components, making the SI53325-B-GQR a convenient solution for remote clock signal distribution applications, especially those in communication and data storage systems.

Working Principle

The basic principle of operation of the SI53325-B-GQR is quite straightforward. It receives an input clock signal and then internally replicates that signal on one or more outputs. This allows the incoming clock signal to be distributed to other ICs at different levels, while preserving its original period, duty cycle and frequency accuracy. The SI53325-B-GQR can also extend or divide the frequency of this replicated output signal. Most interestingly, the SI53325-B-GQR has the capability to output multiple copies of the same clock signal with different frequency and phase adjustments, making it an ideal product for applications like multi-GPU, multi-core and multi-slot systems.

The SI53325-B-GQR is also capable of providing glitch-free, adjustable phase shifting, which is useful for reducing system setup times and improving signal propagation delays. Its independent input/output buffer control and high per-pin drive strength makes it suitable for use in clock-indexed applications.

Conclusion

The SI53325-B-GQR is an extremely versatile product which is designed mainly for use in memory, peripheral and system clocks. Its ability to replicate the input signal on one or more outputs, frequency division/extension, clock-indexed applications, adjustable phase shifting and glitch-free operation make it a suitable choice for any application requiring reliable, low power clocking solutions. This product is often found embedded in microprocessor systems and specifically designed for communications and data storage systems.

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