CY7B991-5JXCT

Overview

The CY7B991-5JXCT is a zero-delay programmable PLL clock buffer from the RoboClock series, manufactured by Infineon Technologies. It operates with a single circuit and supports an output frequency range up to 80 MHz. The device accepts TTL-compatible inputs and provides eight TTL outputs in an 8:8 ratio. It functions within a supply voltage range of 4.5 V to 5.5 V and is designed for surface mount installation in a 32-LCC (J-Lead) package. The component is rated for operation between 0°C and +70°C.

Feature Summary

• Zero-delay programmable PLL architecture
• 8:8 input-to-output buffering ratio
• TTL compatible input and output signals
• Maximum operating frequency of 80 MHz

Applications

• System clock distribution networks
• Digital signal processing timing synchronization
• Communication interface clock generation

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level prior to procurement. Ensure the selected variant matches the required voltage and temperature ratings for the target application environment.

Selection Notes

Select this component when a zero-delay buffer with TTL compatibility is required for frequencies up to 80 MHz. Verify that the system power supply remains within the 4.5 V to 5.5 V range. Ensure the PCB layout accommodates the 32-LCC J-Lead package dimensions and thermal requirements for surface mount assembly.

Part Context

This part belongs to the RoboClock family of clock buffers and drivers. It serves as a solution for distributing reference clocks with minimal jitter and delay skew. The device integrates a phase-locked loop to align output edges with input transitions, distinguishing it from standard non-PLL fan-out buffers.

Replacement Considerations

Cross-reference with other CY7B99x series variants for pin-compatible alternatives. Verify electrical parameters such as supply voltage and output drive strength before substituting. Check for updated lifecycle status and availability of newer generations within the same product line.