CY7B991V-7JCT

Overview

The CY7B991V-7JCT is a zero-delay programmable PLL clock buffer manufactured by Cypress Semiconductor Corp. It operates within a supply voltage range of 2.97 V to 3.63 V and supports maximum frequencies up to 80 MHz. The device features an 8:8 input-to-output ratio with LVTTL outputs and 3-state inputs. Packaged in a 32-PLCC (11.43x13.97 mm) surface-mount case, it functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Zero-delay programmable PLL architecture for precise clock distribution
• Supports 8:8 input-to-output fanout ratio
• Operates at frequencies up to 80 MHz
• LVTTL output drivers with 3-state inputs

Applications

• High-speed digital system clock distribution
• FPGA and ASIC clock buffering
• Telecommunications equipment timing circuits

Procurement Notes

Verify the specific suffix '7' against official Cypress documentation to confirm frequency grade and electrical characteristics. Confirm RoHS compliance status as older RoboClock variants may not meet current environmental standards. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when an 8:8 clock fanout with zero-delay compensation is required at speeds up to 80 MHz. Ensure the design environment supports the 3.3 V nominal supply voltage range (2.97 V to 3.63 V). Verify that the 32-PLCC package footprint matches the PCB layout constraints.

Part Context

This part belongs to the RoboClock series of programmable clock buffers. It serves as a specialized solution for eliminating clock skew in high-performance digital designs compared to standard buffer ICs.

Replacement Considerations

Consult official replacement guides for updated Infineon or Cypress equivalents. Generic clock buffers may lack the zero-delay PLL functionality and programmability inherent to this specific model.