PI49FCT3807DSE

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The PI49FCT3807DSE is a high speed, low power CMOS clock/timing buffer that provides multi-functional support in a single clock/timing line buffer. Suitable for a range of transmission media, the PI49FCT3807DSE features high fan out, an adjustable output duty cycle, clock/timing latency control, and non-volatile control logic. In this article we will discuss the application field and working principle of the PI49FCT3807DSE.

Application Field

The PI49FCT3807DSE can be used in a number of applications, including clock/timing buffering, signal distribution and signal conversion. It is particularly useful for applications requiring a high fan-out, low drive signal strength and tight skew control. The clock/timing can be used to guard sensitive logic and enable universal synchronous/asynchronous timing of the logic across different system domains. Other applications include bidirectional signal transfer, signal routing and fanout of buses and wide interface signals or any applications requiring a compact device to buffer and extend the range of high speed clock/timing signals.

Working Principle

The PI49FCT3807DSE operates on the principle of ‘time-spreading’, which is an electromechanical approach to controlling the speed and latency of a signal. This method of signal timing and latency control is achieved by employing a distributed delay element that is capable of creating a ‘delay-line’ when a signal pulse is introduced and transmitted down the line. This delay-line has adjustable parameters and throughput, allowing the signal propagation to be closely and precisely managed and controlled. As a result the time-spread effect that is achieved produces controlled clock/timing latency, which is a key advantage of the PI49FCT3807DSE over conventional clock/timing buffers.

Another advantage of the PI49FCT3807DSE is its low power consumption, usually due to its high ratio of input and output levels, achieved through the use of advanced CMOS logic technology. In addition, it features an adjustable output duty cycle, allowing the user to set the output frequency and adjust the high and low portions of the cycle. This is beneficial in applications such as those requiring asynchronous control, as it allows the implementation of self-timing, meaning that the pulse widths and timing relationships can be set, without the need for additional logic to decode the data.

Finally, the PI49FCT3807DSE supports configurable logic and is also able to store configuration information in a non-volatile memory. This allows it to be used as an application controller or to store configuration settings and customised settings, making it useful in time-critical applications where speed or reliability of the data is of concern.

Conclusion

The PI49FCT3807DSE is a versatile and reliable clock/timing buffer that is suitable for a range of transmission media, offering a solution that supports high fan-out, low drive signal strength, tight skew control and adjustable output duty cycle. Its ability to employ a ‘time-spreading’ approach to controlling the speed and latency of signals, together with its low power consumption and configurable logic makes it ideal for applications needing reliable data transfer and fast response times.

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