CY7B991-5JC

Overview

The CY7B991-5JC is a single-circuit zero-delay programmable skew clock buffer from the RoboClock™ series, manufactured by Cypress Semiconductor Corp. It operates within a supply voltage range of 4.5V to 5.5V and supports maximum frequencies up to 80 MHz. The device features differential TTL input and output with 3-state capability, packaged in a 32-LCC (J-Lead) surface-mount case measuring 11.43x13.97 mm. Designed for industrial temperature ranges of 0°C to 70°C, it provides precise clock distribution with programmable skew characteristics.

Feature Summary

• Zero-delay programmable skew PLL architecture
• Differential TTL input and output with 3-state control
• Maximum operating frequency of 80 MHz
• Single circuit configuration in 32-PLCC package

Applications

• High-speed digital system clock distribution
• Programmable skew adjustment in timing-critical circuits
• Zero-delay buffering for synchronous logic interfaces

Procurement Notes

Verify component authenticity through authorized distributors or certified secondary market suppliers. Confirm RoHS compliance status as older Cypress products may not meet current environmental standards. Check manufacturing date codes for potential obsolescence issues given the product's age. Ensure storage conditions account for moisture sensitivity levels specified in the datasheet.

Selection Notes

Select this component when zero-delay buffering with programmable skew is required for 5V TTL systems. Compare against CY7B991V variants for 3.3V applications. Verify that the 80 MHz frequency requirement aligns with system timing constraints. Consider package compatibility with existing PCB layouts using 32-LCC footprints.

Part Context

Part of the RoboClock™ family designed for precision clock management. The CY7B991 series offers programmable delay capabilities for optimizing signal integrity in high-speed designs. This specific variant targets 5V logic systems requiring differential clock distribution with minimal insertion delay.

Replacement Considerations

CY7B991V-5JC serves as the 3.3V equivalent variant. Cross-reference with other RoboClock™ devices for similar functionality at different voltage levels. Verify pin compatibility and electrical specifications before substitution.