CY7B991V-5JXIT

Overview

The CY7B991V-5JXIT is a zero-delay programmable PLL clock buffer from Infineon's RoboClock series. It operates on a single 3.3V supply with a voltage range of 2.97V to 3.63V. The device features one circuit capable of generating an output frequency up to 80 MHz, derived from an input range of 3.75 MHz to 80 MHz. It provides eight LVTTL outputs in a 32-LCC (J-Lead) package. The component supports surface mount installation and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Zero-delay programmable PLL architecture for precise clock synchronization
• 8:8 ratio providing eight LVTTL outputs from a single input
• Maximum output frequency of 80 MHz with 3.3V operation
• Extended industrial temperature range from -40°C to +85°C

Applications

• High-performance digital systems requiring low-jitter clock distribution
• Embedded controllers needing programmable clock buffering
• Telecommunications equipment utilizing TTL-compatible clock signals

Procurement Notes

Verify the TR suffix indicates Tape & Reel packaging rather than tube. Confirm the JXIT variant matches the -40°C to +85°C temperature grade specified in local parameters. Ensure compatibility with 32-LCC footprint requirements during procurement planning.

Selection Notes

Select this component when an 8-output LVTTL buffer with zero-delay PLL functionality is required. Verify that the 80 MHz maximum frequency meets system timing needs. Check that the 32-LCC package fits the PCB layout constraints and that the 3.3V supply aligns with the target power domain.

Part Context

This part belongs to the RoboClock family of programmable clock buffers. It serves as a solution for distributing reference clocks to multiple synchronous components while maintaining phase alignment relative to the input source.

Replacement Considerations

Check for CY7B991V-5JXC or CY7B991V-5JX variants if tape-and-reel packaging is not strictly required. Verify pinout and electrical specifications against other RoboClock series members before substitution.