PI49FCT32805QE

Series:	49FCT
Packaging:	Tube
Part Status:	Active
Type:	Fanout Buffer (Distribution)
Number of Circuits:	2
Ratio - Input:Output:	1:5
Differential - Input:Output:	No/No
Input:	CMOS
Output:	CMOS
Frequency - Max:	133MHz
Voltage - Supply:	2.97 V ~ 3.63 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	20-QSOP
Base Part Number:	49FCT32805

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Introduction to Clock/Timing - Clock Buffers, Drivers - PI49FCT32805QE

The PI49FCT32805QE is a high-speed, low-power clock buffer, driver and fanout device, used in applications requiring fast clock buffering and distribution. This device is a member of Pericom Semiconductor’s FCT32805 Series of clock and signal buffering and fanout devices. This device is designed to reduce power consumption while maintaining high-speed operation using a 3V power supply. The PI49FCT32805QE is a useful tool in systems where multiple clock signals need to be buffered, or where one clock signal needs to be distributed to multiple devices.

Application Field

The PI49FCT32805QE is commonly used in computer systems and embedded systems. With the rise of integrated circuit (IC) design, the PI49FCT32805QE is often used in consumer electronics to accurately synchronize various components. This device is especially useful for applications where multiple clock signals need to be synchronized and/or distributed to multiple components. In addition, the PI49FCT32805QE can also be used for other clock related tasks such as spreading clock skew and providing pulse stretching.The PI49FCT32805QE is also commonly used in communications, networking, automotive, and industrial applications. It is especially useful for applications that require fast data transmission, as the high speed buffering and distribution capabilities of the PI49FCT32805QE allow for fast and efficient data transfer.

Working Principle

The PI49FCT32805QE works by receiving an input clock signal and outputting one or more clock signals that are synchronized with the input signal. The internal configuration of the device allows for the buffering (increasing signal strength) or fan-out (increasing number of signals) of an existing clock signal, or the spread (decreasing transition rate) of a clock signal. The device is designed to operate over a wide range of temperatures, from -40°C to +85°C. To buffer or Fan-out a clock signal, two transistors are connected in a totem pole configuration. This configuration ensures that when the clock signal is high, one transistor conducts and the output of the buffer/fanout is high, and when the clock signal is low, the other transistor conducts, and the output of the buffer/fanout is low. The input clock signal is connected to the base of the two transistors, and the output is connected to the collector of each transistor.The PI49FCT32805QE can also be configured to spread the clock signal. This is achieved by altering the timing of the base signal, which is then connected to the clock signal that needs to be spread. The adjustment of this timing allows for the spreading or decreasing of the transition rate of the clock signal.

Conclusion

The PI49FCT32805QE is a capable device that can be used in a variety of applications which require fast buffering and/or fan-out of one or more clock signals. Its wide operating temperature range makes it suitable for use in a variety of industrial and consumer electronics applications, such as communications and networking, automotive, and consumer electronics. Additionally, its ability to spread or decrease transition rates of a clock signal makes it a valuable tool in systems requiring precise synchronisation.

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