PL123E-09SC-R

Clock Generators, PLLs, Frequency Synthesizers Overview

The PL123E-09SC-R is a low skew, zero delay buffer designed for high-speed clock distribution. It operates within a frequency range of 10MHz to 220MHz and supports supply voltages from 2.25V to 3.63V. The device features two synchronized output banks (A and B) with four outputs each, controlled via S1 and S2 selector inputs. It achieves input-to-output synchronization through a PLL feedback loop connected to the CLKOUT pin, ensuring minimal propagation delay. Packaged in a 16-pin SOP, this component provides standard drive strength suitable for commercial temperature applications.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero input-to-output delay achieved via internal PLL feedback on the CLKOUT pin
• Low output-to-output skew of ±100 ps under equal loading conditions
• Two independent output banks (Bank A and Bank B) with selectable control via S1/S2 inputs
• Standard drive strength (8mA) optimized for 3.3V operation

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed clock distribution networks
• Synchronization of multiple system components requiring low jitter
• Board-level clock buffering for digital logic interfaces

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the application environment remains within the commercial operating temperature range of 0°C to 70°C. Ensure the power supply voltage stays between 2.25V and 3.63V. Confirm that the design does not require 5V input tolerance, as the device is not intended for such applications. Check PCB layout guidelines regarding trace impedance and decoupling capacitor placement near VDD pins to maintain signal integrity.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the PL123E-09SC-R when standard drive strength (8mA) is sufficient for the load capacitance requirements. Choose this part over the 'H' variant if lower power consumption is prioritized over higher drive capability. Ensure the SOP package fits the board space constraints. Verify that the required frequency range falls within the 10MHz to 220MHz specification for the selected supply voltage.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the PL123E series of low skew zero delay buffers manufactured by Micrel (now Microchip Technology). The 'SC' suffix indicates a 16-pin Small Outline Package (SOP), while the '-R' suffix denotes tape and reel packaging. It is distinct from the TSSOP variants and the high-drive 'H' versions within the same family.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes include other PL123E-09 variants with different packages or drive strengths, such as PL123E-09SI-R (SOP, Industrial Temp) or PL123E-09HSC-R (SOP, High Drive). Cross-family replacements require verification of pin compatibility and electrical specifications.