P5P2309AF-116SR

Clock Generators, PLLs, Frequency Synthesizers Overview

The onsemi P5P2309AF-116SR is a 3.3 V zero-delay buffer designed for high-speed clock distribution. It accepts one reference input and drives nine low-skew outputs, grouped as two banks of four plus one CLKOUT feedback pin. The device operates within a frequency range of 10 MHz to 133 MHz and utilizes an on-chip PLL that locks to the REF input, with feedback obtained from the CLKOUT pad. It features less than 200 pS output-to-output skew and cycle-to-cycle jitter under equal loading conditions. The part is housed in a 16-pin SOIC package (CASE 751BG) and supports commercial temperature operation.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero input-output propagation delay achieved via on-chip PLL locking to the REF pin.
• Drives nine low-skew outputs with output-to-output skew guaranteed less than 200 pS.
• Device-to-device skew is guaranteed less than 700 pS when multiple devices share the same input.
• Includes test mode to bypass the PLL, allowing direct application of the input clock to outputs.

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed clock distribution for CPU and PCI bus frequencies.
• Clock buffering in Pentium-based systems requiring low jitter.
• Multi-device clock synchronization where inter-device skew must be minimized.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering suffix 'SR' corresponds to the tape and reel packaging format for the 16-pin SOIC variant. Confirm the 'P' prefix indicates commercial temperature range (0°C to 70°C) versus 'I' for industrial range. Ensure the specific lot marking matches the datasheet requirement of '5P2309AF-1'.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single reference clock must be distributed to nine loads with minimal skew. The -1H version offers higher drive strength and faster rise/fall times if load capacitance exceeds standard limits. Ensure all outputs, including CLKOUT, are uniformly loaded to maintain zero delay characteristics.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the ASM5P230xA family of zero-delay buffers. The P5P2309AF-116SR is the commercial temperature, tape-and-reel version of the ASM5P2309A-1. It shares the same electrical specifications as the tube-packaged variants but differs in shipping configuration. The 8-pin ASM5P2305A is the sibling device offering five outputs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other parts from the ASM5P230xA series with matching package and temperature ratings. Cross-vendor equivalents must match the 133 MHz operating frequency, 3.3 V supply, and 16-pin SOIC footprint while maintaining similar skew and jitter specifications.