CY7B991-5JXC

Overview

The CY7B991-5JXC is a zero-delay programmable skew PLL clock buffer from Infineon Technologies' RoboClock series. It operates within a frequency range of 3.75 MHz to 80 MHz and supports an 8:8 input-to-output ratio. The device features differential inputs and outputs, with TTL-compatible logic levels. It functions on a single power supply ranging from 4.5 V to 5.5 V. Housed in a 32-PLCC surface-mount package, it is designed for applications requiring precise clock distribution with minimal jitter and programmable output skew capabilities.

Feature Summary

• Zero-delay programmable skew PLL architecture
• 8:8 differential input/output configuration
• Frequency range of 3.75 MHz to 80 MHz
• TTL-compatible 3-state inputs and outputs

Applications

• High-performance system clock distribution
• Programmable clock buffering in digital systems
• Low-jitter clock generation networks

Procurement Notes

This component is listed as obsolete or end-of-life by the manufacturer. Availability is restricted, and sourcing may require checking secondary market distributors. Verify the specific revision and authenticity when procuring replacement units for existing designs.

Selection Notes

Select this part for applications requiring a single circuit PLL buffer with an 8:8 fan-out ratio. Ensure the design accommodates the 32-LCC (J-Lead) package dimensions and the 4.5 V to 5.5 V supply voltage range. Confirm that the 80 MHz maximum frequency meets the system timing requirements.

Part Context

Part of the RoboClock family, which specializes in low-jitter clock buffers and generators. This specific model integrates a phase-locked loop to eliminate propagation delay between input and output clocks while allowing programmable skew adjustments for each output channel.

Replacement Considerations

As the part is obsolete, verify functional equivalents from the same RoboClock family or newer generations. Check pin compatibility and electrical specifications against current Infineon offerings before substitution.