CY7B991-2JXCT

Overview

The CY7B991-2JXCT is a zero-delay programmable PLL clock buffer manufactured by Infineon Technologies under the RoboClock series. It features an 8:8 input-to-output ratio with differential TTL inputs and outputs, supporting frequencies up to 80 MHz. The device operates on a single 4.5V to 5.5V supply within a commercial temperature range of 0°C to 70°C. Packaged in a 32-LCC (J-Lead) surface-mount case, it provides low-jitter clock distribution for digital systems requiring precise timing alignment.

Feature Summary

• Zero-delay programmable PLL architecture ensures minimal output skew
• 8:8 differential input/output configuration with TTL compatibility
• Operates at frequencies up to 80 MHz with 4.5V to 5.5V supply
• Available in 32-LCC (J-Lead) surface-mount package

Applications

• High-speed digital signal processing systems
• Telecommunications equipment requiring precise clock synchronization
• Computer motherboards and peripheral interfaces

Procurement Notes

Verify the specific suffix '2' against official Infineon documentation to confirm pinout or electrical parameter variations compared to standard variants. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region.

Selection Notes

Select this component when an 8-channel buffered clock output with zero-delay characteristics is required. Ensure the system voltage aligns with the 4.5V–5.5V range and that the 32-LCC package fits the PCB layout constraints. Verify TTL input/output compatibility with downstream logic levels.

Part Context

This part belongs to Infineon's RoboClock family of zero-delay PLL buffers. These devices are designed to replace crystal oscillators and traditional buffer chains, reducing board space and jitter in high-performance digital designs.

Replacement Considerations

Check for direct cross-references from other manufacturers offering 8:8 zero-delay PLL buffers in 32-LCC packages. Verify functional equivalence regarding frequency range, supply voltage, and package dimensions before substitution.