CY7B991-2JCT

Overview

The CY7B991-2JCT is a programmable skew clock buffer from the RoboClock series, manufactured by Cypress Semiconductor Corp. It functions as a fanout and zero-delay buffer with a 1:8 input-to-output ratio. The device accepts CMOS inputs and provides eight CMOS outputs. It operates within a supply voltage range of 4.5V to 5.5V and supports an output frequency up to 80 MHz. Packaged in a 32-LCC (J-Lead) surface-mount case, it is designed for applications requiring precise timing control and low jitter in high-performance systems.

Feature Summary

• Programmable Skew Clock Buffer with user-selectable output functions including inverted/non-inverted signals and frequency division/multiplication.
• Zero input-to-output delay with minimal specified output skews (<100 ps typical).
• Capable of driving terminated transmission lines with impedances as low as 50Ω.
• Low jitter performance with peak-to-peak jitter less than 200 ps.

Applications

• High-performance computer system timing optimization.
• System integrator clock distribution networks.
• Applications requiring precise phase alignment between multiple clock domains.

Procurement Notes

Verify the specific ordering suffix JCT against official Cypress documentation to confirm packaging details, such as tube or tray quantities, as these can vary. Ensure the component meets the required RoHS compliance status for the target assembly process. Cross-reference the manufacturer part number with current availability status, as older RoboClock series parts may have end-of-life implications.

Selection Notes

Select this component when a 1:8 fanout buffer with programmable skew is required for CMOS logic levels. Ensure the system power supply remains stable within the 4.5V to 5.5V range. Verify that the operating temperature range of 0°C to 70°C aligns with the environmental conditions of the final application. Confirm that the 32-LCC package footprint fits the PCB layout constraints.

Part Context

This part belongs to the RoboClock family of programmable skew clock buffers. It shares functional similarities with other models like the CY7B9911 and CY7B992-2, which offer comparable zero-delay buffering and skew control features. These devices are typically used in complex digital systems where clock tree integrity and timing precision are critical.

Replacement Considerations

Direct replacements include the CY7B991-2JC and CY7B992-2JC from the same series. Verify pin compatibility and electrical specifications before substitution. Other compatible options may include the CY7B9911 for similar functionality in different packages.