PL133-47SI

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The PL133-47SI is a popular clock buffer/driver integrated circuit designed to provide a single output clock signal. It is intended as a solution to clock distribution requirements within a system, where multiple output clock signals are required. The application fields of PL133-47SI are synchronous or asynchronous, serial or parallel clock distribution, clock buffers, current-driven buffering, and clock tree replacement.

The basic working principle of the PL133-47SI lies in the combination of the clock buffer and driver stages, the input clock signal is buffered to drive multiple output lines, thus eliminating the need for multiple output clock sources. The circuit consists of an input stage with a 1–4 inverter and edge-triggered register that can capture up to four clock pulses, allowing adjustable delay on either the rising or falling edge. This is followed by an output stage consisting of two 4:1 multiplexers which allows up to four outputs to be driven simultaneously.

The PL133-47SI also contains built-in clock rate adjustment logic, enabling the output clock signal to be adjusted according to the requirements of the system. This allows the circuit to be used in applications where multiple output clock rates are required. The control logic of the circuit is designed to ensure that all output signals are aligned to the input signal, eliminating jitter on the output signals. Furthermore, the circuit also contains an adjustable phase shifter which allows the phase of the output signal to be shifted to reduce timing margins for critical applications.

The PL133-47SI is a highly flexible and cost-effective solution for clock buffer and driver applications. It features a low power consumption, small form factor and superior signal integrity, making it an ideal solution for low-power, high-interface applications. Furthermore, its ability to adjust clock rates and signal phases make it well suited for use in applications where multiple output signals rates or signal phases need to be synchronized.

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