CY7B991-5JCT

Overview

The CY7B991-5JCT is a zero-delay fanout buffer from the RoboClock series, manufactured by Cypress Semiconductor Corp. It features a single circuit with a 1:8 input-to-output ratio and utilizes CMOS input/output signaling without differential capabilities. The device operates on a supply voltage of 4.5V to 5.5V and supports surface-mount installation in a 32-LCC (J-Lead) package, specifically identified as 32-PLCC (11.43x13.97). It is designed for operation within an ambient temperature range of 0°C to 70°C.

Feature Summary

• Zero-delay buffer architecture for clock distribution
• 1:8 input-to-output fanout ratio
• CMOS input and output signaling
• 32-PLCC surface-mount package

Applications

• System clock distribution networks
• High-speed digital logic synchronization
• Embedded system timing architectures

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm pin compatibility and electrical characteristics. Confirm RoHS compliance status and lead-free requirements prior to procurement. Ensure the 32-PLCC package dimensions match the target PCB footprint constraints.

Selection Notes

Select this component when a single-clock source requires expansion into eight distinct paths with minimal propagation delay skew. Verify that the system power supply remains stable between 4.5V and 5.5V. Ensure the operating environment stays within the specified 0°C to 70°C temperature range for reliable performance.

Part Context

This part belongs to the RoboClock family of clock management devices. It serves as a specialized buffer for distributing reference clocks across multiple synchronous components. The J-Lead PLCC package offers a compact solution for dense board layouts requiring high-pin-count interconnects.

Replacement Considerations

Check for direct cross-references within the same RoboClock family. Verify pin-out compatibility if substituting with other 32-pin clock buffers. Ensure replacement parts support the same 1:8 ratio and CMOS I/O levels.