CY2305SXI-1HT

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2305SXI-1HT is a low-cost, 3.3 V zero delay buffer manufactured by Infineon Technologies (formerly Cypress). It operates within an industrial temperature range of -40°C to +85°C and accepts input frequencies from 10 MHz to 133 MHz. The device features one reference input driving five buffered outputs with high drive strength. It utilizes an on-chip phase-locked loop (PLL) for clock distribution, achieving typical cycle-to-cycle jitter of 60 ps and output-to-output skew of 85 ps. The component is housed in an 8-pin SOIC package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero input-output propagation delay achieved through internal PLL feedback
• High drive capability with faster rise and fall times compared to standard versions
• Low jitter performance suitable for CPU and PCI bus applications
• Power-down mode reduces supply current when no rising edges are present on the REF input

Clock Generators, PLLs, Frequency Synthesizers Applications

• Distribution of high-speed clocks in Pentium-based systems
• Clock buffering for PCI bus frequencies
• CPU clock distribution networks

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the ordering suffix 'HT' corresponds to the tape and reel packaging format as specified in the official datasheet. Confirm the 'I' suffix indicates the industrial temperature grade (-40°C to +85°C). Ensure compatibility with 3.3 V logic levels and check for moisture sensitivity handling requirements during assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part for designs requiring a single-input, five-output clock buffer with minimal skew. The -1H variant provides higher drive strength than the standard -1 version. Ensure all outputs, including CLKOUT, have uniform capacitive loading to maintain zero delay characteristics between the reference input and buffered outputs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the CY2305/CY2309 family of low-cost 3.3 V zero delay buffers. The CY2305 serves as the 8-pin version distributing five outputs, while the CY2309 offers nine outputs in a 16-pin package. Both devices share similar functional architectures but differ in pin count and output capacity.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

CY2305SXI-1T is the same device in tube packaging instead of tape and reel. CY2305SC-1H variants offer commercial temperature ranges instead of industrial.