CY7B991V-7JXCT

Overview

The CY7B991V-7JXCT is a zero-delay programmable PLL clock buffer from the RoboClock series by Infineon Technologies. It operates within a supply voltage range of 2.97V to 3.63V and supports a maximum frequency of 80 MHz. The device features an 8:8 input-to-output ratio with LVTTL output levels and 3-state inputs. Packaged in a surface-mount 32-LCC (J-Lead) case, it functions across an operating temperature range of 0°C to 70°C.

Feature Summary

• Zero-delay programmable PLL architecture for precise clock synchronization
• 8:8 input-to-output buffering ratio with LVTTL outputs
• Operates on 3.3V nominal supply (2.97V–3.63V range)
• Surface-mount 32-LCC (J-Lead) package

Applications

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

Procurement Notes

Verify the specific ordering suffix 'V' against official Infineon documentation to confirm voltage range and package variant accuracy. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Ensure the Tape & Reel packaging matches automated assembly needs.

Selection Notes

Select this component when a low-jitter, zero-delay clock buffer is required for 3.3V logic systems. The 8:8 ratio suits applications needing equal fan-in and fan-out. Verify that the 80 MHz maximum frequency meets system timing requirements and that the LVTTL output levels are compatible with downstream loads.

Part Context

This part belongs to the RoboClock family of programmable clock buffers. These devices are designed to eliminate clock skew by using a phase-locked loop to align output clocks with the input reference. The CY7B991 series typically offers flexible programming options for frequency multiplication and division.

Replacement Considerations

Check Infineon datasheets for direct pin-compatible replacements within the CY7B99x series. Verify if newer generations like the CY2xxx series offer improved jitter performance or lower voltage options while maintaining the 32-PLCC footprint.