CY23S05SXI-1T

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY23S05SXI-1T is a low-cost, 3.3 V spread-aware zero delay buffer manufactured by Infineon Technologies (formerly Cypress Semiconductor). It operates within an industrial temperature range of -40 °C to +85 °C and utilizes advanced 0.65 µm CMOS technology. The device accepts one reference input on the REF pin and drives five buffered clock outputs with less than 250 ps output-to-output skew. It features an internal phase-locked loop (PLL) that locks to the input clock via the CLKOUT feedback pin. The component supports frequencies from 10 MHz to 133.33 MHz, ensuring cycle-to-cycle jitter remains below 200 ps. Input-to-output propagation delay is guaranteed to be less than 350 ps.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero Delay Buffer architecture ensures minimal input-to-output propagation delay through internal PLL feedback.
• Spread Aware functionality preserves Spread Spectrum Frequency Timing Generation (SSFTG) signals without filtering.
• Low skew performance guarantees less than 250 ps between outputs under uniform loading conditions.
• Power-down mode reduces supply current to 25.0 µA when no rising edges are detected on the REF input.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Distribution of high-speed clocks compatible with CPU bus frequencies
• PCI bus frequency synchronization applications
• Systems requiring precise timing alignment across multiple devices

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging for the Industrial (-40 °C to +85 °C) variant. Confirm the package type matches the 8-pin 150-mil SOIC specification. Ensure compatibility with the 3.3 V supply voltage requirements and check for any end-of-life notifications or product change notices associated with this Infineon part number before finalizing procurement plans.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the CY23S05SXI-1T when five buffered outputs are required with strict skew constraints. Choose this industrial grade version over commercial variants if operation below 0 °C is necessary. Ensure all outputs, including the CLKOUT feedback pin, are equally loaded to achieve the specified zero delay characteristics. Verify that the system does not require the test mode bypass feature available only in the nine-output CY23S09 model.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the CY23Sxx series of spread-aware zero delay buffers. It serves as the five-output counterpart to the nine-output CY23S09 model. Both share identical core PLL technology and electrical specifications but differ in output count and package pinout configurations. The CY23S05 provides a compact solution for systems needing fewer synchronized clock domains.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The CY23S05SXI-1H is the high-drive version of this component, offering faster rise and fall times while maintaining the same functional interface. Direct substitution requires verifying drive strength requirements against the load capacitance. Other family members like the CY23S09 offer more outputs but utilize different pinouts.