CY7B9910-5SC

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY7B9910-5SC is a low skew clock buffer manufactured by Cypress Semiconductor, housed in a 24-pin SOIC package. It features an integrated PLL for zero-delay synchronization with a lock time of 0.5 ms. The device provides eight outputs capable of driving 50Ω terminated lines, operating within a frequency range of 15 to 80 MHz depending on the FS pin configuration. Typical output skew is less than 100 ps, with a maximum of 250 ps for this accuracy grade. Jitter specifications are under 200 ps peak-to-peak and 25 ps RMS. It operates at 5V ± 10% supply voltage.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated phase-locked loop enables zero-delay synchronization between reference and feedback inputs.
• Eight individual drivers support transmission line termination as low as 50 ohms.
• Three-level input pins allow selection of frequency ranges and test modes.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Low-skew system clock distribution for high-performance computer systems.
• Timing optimization for Pentium-based processors.
• Board-to-board clock distribution trees using cascaded buffers.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation, as the datasheet identifies Cypress Semiconductor Corporation as the producer. Confirm the specific suffix 'SC' corresponds to the commercial temperature range and 250 ps skew accuracy. Ensure the component matches the 24-lead Small Outline IC (S13) package type before integration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the CY7B9910 variant when TTL logic levels are required for the REF and FB inputs. Choose the -5SC suffix specifically for applications requiring a maximum skew of 250 ps. Verify that the operating frequency falls within the 15–80 MHz range supported by the FS pin settings. Ensure the PCB layout accommodates the 24-pin SOIC footprint.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the CY7B9910/CY7B9920 family of low skew clock buffers. The CY7B9910 series utilizes TTL-compatible inputs, whereas the CY7B9920 uses CMOS inputs. Both share identical functional descriptions and packaging options, differing primarily in input/output voltage thresholds.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The CY7B9910-5SI serves as the industrial temperature range equivalent. The CY7B9920-5SC is a compatible alternative if CMOS input levels are acceptable. Verify that substitute parts maintain the same 24-pin SOIC package and skew specifications.