LMH2180SDX/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Fanout Buffer (Distribution)
Number of Circuits:	1
Ratio - Input:Output:	2:2
Differential - Input:Output:	No/No
Input:	Clock
Output:	Clock
Frequency - Max:	75MHz
Voltage - Supply:	2.4 V ~ 5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	8-WFDFN Exposed Pad
Supplier Device Package:	8-WSON (3x3)
Base Part Number:	LMH2180

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Introduction

LMH2180SDX/NOPB is a high-speed, low-power clock buffer/driver from Texas Instruments. It offers flexibility, design reliability and high performance features in a variety of challenging applications. This product is tailored to provide a total solution for any source of high-speed, low-power clock signals. It can adhere to any clock signal frequency ranging from 1 MHz to 500 MHz and will operate with either rising edge or falling edge symmetry. This product is capable of driving up to 4 outputs with no dead time loss. It also allows for many different options for different system requirements, including individual output clock load choices and spread spectrum support. This application allows for simplification in applications ranging from clock signal distribution to creating a synchronized clock.

Application Field

The LMH2180SDX/NOPB is ideally suited for a variety of applications. It is the perfect solution to drive high-speed, low power clock signals in applications such as high speed local bus and memory systems, multi-core CPU and GPU computing, hybrid computer architectures, telecom systems, and automotive systems. This product is also an ideal choice for replacing large clock buffers, such as the NS741, when small size and power efficiency are necessary.This device is extremely versatile and can be used in a variety of different applications. It can be used as an input buffer, to synchronize high speed clocks and can also be used to reduce signal jitter. Additionally, this product can be used as a clock distributor, to condition and reduce signal skew, and to tax and divide clock signals.

Working Principle

The LMH2180SDX/NOPB works by accepting a single input clock signal, then buffers and shapes the signal, amplifying it and redistributing it to up to four outputs.The input buffer amplifies the clock input signal, buffers it and reduces signal jitter. The input clock is then synchronized with the data outputs. This helps reduce any noise or other unwanted signals on the clock line, ensuring that data is delivered reliably and quickly, with minimal jitter.Next, the clock signal is shaped and transmitted to up to 4 additional channels. This buffered and shaped clock signal is then provided to the output drivers where it is amplified and the output can be adjusted in order to provide the necessary signal strength. The on-chip spread spectrum allows the output clock frequency to be adjusted in order to reduce any unwanted system emissions.The LMH2180SDX/NOPB also provides flexible output clock loading options. This allows the end user to select the best output clock load for the specific application. Additionally, the device allows for an adjustable hold-up time, allowing for a delay in the output clock low state before power-down.

Conclusion

The LMH2180SDX/NOPB from Texas Instruments is an ideal choice for high speed, low power clock signals in various applications. The device offers maximum flexibility, design reliability and high performance features, in combination with low power dissipation. By utilizing the LMH2180SDX/NOPB, system designers can reduce cost and complexity, while providing superior performance and rapid, reliable system operation.

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