PL123S-09OC

Clock Generators, PLLs, Frequency Synthesizers Overview

The PL123S-09OC is a spread-spectrum compatible, low skew, zero delay buffer manufactured by Micrel Inc. It operates on a single 3.3V supply and supports frequencies from 10MHz to 134MHz. The device features nine buffered clock outputs organized into two banks (Bank A and Bank B), each containing four outputs. These banks are synchronized with the input via an internal PLL, achieving input-to-output skew of less than ±100ps. The component is housed in a 16-pin TSSOP package and is designed for commercial temperature ranges (0°C to 70°C).

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero delay buffering with input-to-output skew less than ±100 ps.
• Spread-spectrum modulation compatible for EMI reduction.
• Two independent output banks (A and B) with selectable control via S1 and S2 inputs.
• Standard drive strength of 8mA at 3.3V operation.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Distribution of high-speed clocks in systems requiring low jitter.
• Applications utilizing spread-spectrum clocking to meet FCC regulations.
• Multi-point clock distribution where bank isolation is required.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the application environment remains within the specified commercial temperature range of 0°C to 70°C. Ensure the power supply voltage stays strictly between 3.0V and 3.6V, as the device is not 5V tolerant. Confirm that the PCB layout adheres to the recommended trace lengths and decoupling capacitor placement to maintain signal integrity and minimize ringing.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the PL123S-09OC when nine outputs are required with independent bank control. Choose this model over the PL123S-05 if more than five clock points are needed. Verify that the load capacitance does not exceed 30pF for frequencies below 100MHz or 10pF for frequencies above 100MHz to ensure proper switching characteristics.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the PL123S series of zero delay buffers produced by Micrel Inc., which was later acquired by Microchip Technology. The 'O' suffix indicates the 16-pin TSSOP package option, while 'C' denotes the commercial temperature rating. It serves as a fanout buffer solution for synchronizing clock signals across multiple components in a circuit.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult manufacturer resources for cross-reference data.