CY7B991-5JXI

Overview

The CY7B991-5JXI is a zero-delay programmable skew PLL clock buffer from Infineon Technologies' 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 an industrial temperature range of -40°C to +85°C. Housed in a 32-PLCC surface-mount package, it provides precise clock distribution for high-speed digital systems requiring low jitter and programmable output skew.

Feature Summary

• Zero-delay programmable skew PLL architecture
• 8:8 differential input/output ratio
• Frequency range up to 80 MHz
• Industrial operating temperature (-40°C to +85°C)

Applications

• High-speed data acquisition systems
• Telecommunications equipment clocking
• Network infrastructure timing

Procurement Notes

Verify the specific ordering suffix JXI against official Infineon documentation to confirm pinout compatibility and electrical characteristics relative to other variants in the CY7B991 family. Confirm availability status as this component type may have limited stock or end-of-life implications depending on the manufacturing date code.

Selection Notes

Select this component when a zero-delay buffer with 8 differential outputs is required for frequencies up to 80 MHz. Ensure the system design supports the 4.5V to 5.5V supply voltage and requires TTL-compatible I/O levels. The 32-PLCC package necessitates appropriate PCB footprint design for J-leads.

Part Context

Part of the RoboClock™ family, designed for low-jitter clock generation and distribution. The CY7B991 series integrates a phase-locked loop to eliminate propagation delay between input and output clocks while allowing programmable skew adjustment across outputs.

Replacement Considerations

Check Infineon datasheets for direct pin-compatible replacements within the CY7B991 series. Verify if higher-frequency variants (e.g., CY7B99x-6) are suitable if future speed upgrades are anticipated.