CY2309CSXC-1

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2309CSXC-1 is a 3.3 V zero delay clock buffer from the CY2309C series, designed for distributing high-speed clocks. It accepts one reference input and drives nine outputs grouped as 4 + 4 + 1. The device features an on-chip phase locked loop (PLL) that locks to the REF pin, with feedback obtained from the CLKOUT pad. Operating frequencies range from 10 MHz to 100–133 MHz. It provides zero input and output propagation delay and multiple low skew outputs. The part is available in a 16-pin SOIC package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero input and output propagation delay
• One input drives nine outputs (grouped as 4 + 4 + 1)
• 50 ps typical cycle-to-cycle jitter at 66 MHz with 15 pF load
• On-chip PLL with internal feedback via CLKOUT

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed clock distribution systems
• System testing and chip verification
• Low skew clock buffering applications

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific package type required, as the CY2309C series is available in both 16-pin SOIC and TSSOP variants. Confirm temperature grade compatibility, as commercial, industrial, and automotive grades exist within the family. Ensure ordering suffixes match the desired packaging format, such as tube or tape and reel options.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the CY2309CSXC-1 for standard drive requirements in commercial temperature ranges (0°C to 70°C). For higher drive strength and faster rise/fall times, consider the -1H variant. Ensure all outputs, including CLKOUT, are uniformly loaded to achieve zero delay specifications. Verify load capacitance limits based on operating frequency: 30 pF below 100 MHz and 10 pF above 100 MHz.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY2309CSXC-1 is a die replacement part for the original CY2309. It belongs to the CY2309C family of 3.3 V zero delay buffers. The 'S' indicates a 16-pin SOIC package, 'X' denotes tube packaging, 'C' signifies commercial temperature grade, and '1' represents standard drive strength. This revision maintains functional compatibility while offering updated electrical characteristics.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The CY2309C serves as a direct die replacement for the CY2309. When replacing older versions, verify that the drive strength and temperature range meet system requirements. The -1H version offers higher drive capability compared to the standard -1 version.