CY2305ESXI-1H

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2305ESXI-1H is a low-cost 3.3V zero delay buffer manufactured by Cypress Semiconductor Corp. It accepts one reference input and drives five low-skew clock outputs, functioning as an 8-pin version of the CY2309 series. The device features an on-chip phase-locked loop (PLL) that locks to an input clock on the REF pin, with feedback obtained from the CLKOUT pad. Designed for high-speed clock distribution, it supports operating frequencies up to 133 MHz and operates within a supply voltage range of 3V to 3.6V.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero Delay Buffer architecture with on-chip PLL for low-skew clock distribution
• Operates at frequencies up to 133 MHz with 3.3V power supply
• Single input drives five LVCMOS outputs
• Available in 8-pin SOIC package

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI bus clock buffering
• SDRAM clock distribution
• Pentium-based system clocking

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY2305ESXI-1H belongs to the CY2305/CY2309 family of low-cost 3.3V zero delay buffers. While the CY2309 offers nine outputs in a 16-pin package, the CY2305 provides five outputs in a compact 8-pin SOIC form factor. The -1H suffix indicates operation at higher frequencies (up to 133 MHz) with increased drive capability compared to standard -1 variants.