CY2309SXC-1T

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2309SXC-1T is a low-cost, 3.3 V zero delay buffer manufactured by Infineon Technologies (formerly Cypress). It features an on-chip PLL that locks to a reference clock input and distributes the signal to nine LVCMOS outputs organized into two banks of four plus one dedicated output. The device supports operating frequencies from 10 MHz up to 133.33 MHz with commercial temperature range operation (0°C to 70°C). Key electrical parameters include a typical cycle-to-cycle jitter of 60 ps, output-to-output skew of 85 ps, and a supply voltage range of 3.0 V to 3.6 V. It is housed in a 16-pin SOIC package and supplied in tape and reel format.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero delay buffer architecture with internal PLL feedback for minimal input-to-output propagation delay
• Nine low-skew LVCMOS outputs distributed across two selectable banks
• Test mode capability allowing bypass of the phase-locked loop via select inputs
• Power-down mode functionality reducing current consumption when no reference clock is present

Clock Generators, PLLs, Frequency Synthesizers Applications

• Distribution of high-speed clocks in Pentium-based computer systems
• Clock buffering for PCI bus frequency synchronization
• System testing and validation using PLL bypass modes

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through official Infineon channels or authorized distributors. Confirm the specific ordering suffix matches the required package type and temperature rating. Check for end-of-life status or obsolescence notices prior to procurement decisions. Ensure compliance with RoHS directives if applicable to the target market regulations.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part for applications requiring fan-out buffering with tight skew constraints at frequencies up to 133 MHz. Ensure the load capacitance on all outputs, including CLKOUT, is uniform to maintain zero delay specifications. Consider the -1H variant if faster rise and fall times are necessary for higher drive requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the CY2309C family of zero delay buffers designed for low-cost clock distribution. It serves as a direct replacement for legacy Cypress Semiconductor parts following the company's acquisition by Infineon. The device is functionally compatible with other members of the CY2305/CY2309 series but offers specific pinout and packaging configurations.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers: CY2309SXC-1HT, CY2309NZSC-1H.