CY7B991-5JXIT

Overview

The CY7B991-5JXIT is a zero-delay programmable skew PLL clock buffer from the RoboClock series, manufactured by Infineon Technologies. It operates within a frequency range of up to 80 MHz and supports an 8:8 input-to-output ratio with differential I/O capabilities. The device accepts TTL inputs and provides TTL outputs, functioning as a single-circuit buffer/driver. It is designed for surface mount installation in a 32-LCC (J-Lead) package, specifically the 32-PLCC form factor measuring 11.43x13.97 mm. The component requires a supply voltage between 4.5V and 5.5V and is rated for operation across an extended temperature range of -40°C to +85°C.

Feature Summary

• Zero-delay programmable skew PLL architecture
• 8:8 input-to-output ratio with differential signals
• Operates at frequencies up to 80 MHz
• Extended industrial temperature range (-40°C to +85°C)

Applications

• High-performance digital systems requiring precise clock distribution
• Programmable skew adjustment for timing alignment
• Buffering differential clock signals in TTL-compatible environments

Procurement Notes

Verify the specific ordering suffix 'IT' against official Infineon documentation to confirm the Tape & Reel packaging and extended temperature rating. Ensure compatibility with existing system voltage levels (4.5V–5.5V) and interface requirements before procurement.

Selection Notes

Select this component when a zero-delay buffer with programmable skew is required for 8-channel differential clock distribution. Confirm that the 32-PLCC surface-mount package fits the PCB layout constraints and that the operating temperature range meets the environmental specifications of the target application.

Part Context

This part belongs to the RoboClock family of clock buffers and drivers. It serves as a specialized solution for managing clock tree integrity by providing low-jitter buffering and programmable delay adjustments, distinct from standard non-PLL fanout buffers.

Replacement Considerations

Check for direct pin-to-pin replacements within the same RoboClock series or equivalent zero-delay buffers from other manufacturers that support 8:8 differential ratios and 80 MHz operation in a 32-PLCC package.