CY2305ESXC-1H

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2305ESXC-1H is a low-cost, 3.3V zero-delay buffer from the Cypress Semiconductor 2305 series. It accepts one reference input and drives five low-skew clock outputs using an on-chip phase-locked loop (PLL) that locks to the REF pin. The -1H suffix indicates operation at frequencies up to 133 MHz with higher drive capability compared to standard -1 devices. Packaged in an 8-pin SOIC, it provides zero input-to-output propagation delay and typical cycle-to-cycle jitter of 60 ps.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero input-output propagation delay via on-chip PLL feedback
• Operates at frequencies up to 133 MHz with high drive strength
• Drives five low-skew outputs from a single reference input
• Typical output-to-output skew of 85 ps

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI bus clock distribution
• SDRAM buffer applications
• Pentium-based system clocking

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer origin, as Infineon Technologies also lists this part number following the acquisition of Cypress. Confirm the specific suffix 'ESXC' against the datasheet to ensure correct package type and temperature range specifications before ordering.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the CY2305ESXC-1H when a single-ended 1:5 fanout with zero delay is required for systems operating between 10 MHz and 133 MHz. Ensure the design accommodates the 3.3V supply voltage and utilizes the 8-pin SOIC footprint constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component is the 8-pin variant of the CY2309, which offers nine outputs in a 16-pin package. Both belong to the same low-cost 3.3V zero-delay buffer family designed for high-speed clock distribution in legacy computing architectures.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other CY2305 variants such as CY2305SC-1T or CY2305CSXA-1H, provided the package and temperature ratings match the application requirements.