8P391208NLGI

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Part Status:	Preliminary

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8P391208NLGI Application Field and Working Principle

Introduction

8P391208NLGI is a type of clock buffer from Texas Instruments, with features such as low-jitter buffer and low-noise output. The buffer technology is based on internal logic drive used for clock synchronization that allows low-jitter and skew operation in multiple-clock systems. 8P391208NLGI is classified in the Clock/Timing category, Clock Buffers, Drivers subcategory. The wide range input-clock frequency can be applied to almost any environment, making this buffer suitable for use in a variety of applications.

Application Fields

This clock buffer is used in many applications such as in ASIC/FPGA designs, SCSI bus controllers, low-power cards, high-density computing applications, DDR memory systems, memory modules, and system-level synchronization. It is also used in telecom systems, high-speed servers, global timing modules, backplane architectures and other industrial systems.

Working Principle

The 8P391208NLGI is designed to operate with a wide range of input-clock frequencies from 1.2GHz to 3.3GHz. This buffer is powered by 2.5V and works with the LVTTL-LVCMOS standards. It is based on the low-jitter buffer architecture that uses an internal logic drive to keep clock synchronization in multiple-clock systems.When the input clock signals detected by the buffer, the internal logic drive turns ON and OFF the output enable pins of the buffer to keep synchronization. The ON/OFF ratios of the enable pins depend on the buffer’s setup and the input frequencies to be synchronized.At the same time, the low-noise system ensures that the output clock signals remain jitter-free and more stable over time. This is achieved by minimizing the possibility of noise from other components, such as system memory, interfering with the buffer-generated clock signals.

Conclusion

The 8P391208NLGI is a clock buffer developed by Texas Instruments that is suitable for use in a variety of applications. It is powered by 2.5V and works with the LVTTL-LVCMOS standards. This clock buffer is based on the low-jitter buffer architecture with internal logic drive that keeps clock synchronization in multiple-clocks systems, and low-noise system that ensures output clock signals remain jitter-free and more stable over time.

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