CDCU877AZQLT

Application Specific Clock/Timing Overview

The CDCU877AZQLT is a 1.8-V phase-locked loop (PLL) clock driver designed for DDR2 SDRAM applications. It distributes one differential clock input to ten differential outputs and includes feedback outputs. The device operates at frequencies up to 400 MHz with an application range of 160 MHz to 340 MHz. Key electrical parameters include a supply voltage (VDDQ) of 1.7 V to 1.9 V, static phase offset of ±50 ps, cycle-to-cycle jitter of ±30 ps, and output skew of 35 ps. It features low power consumption, reaching 135 mA dynamic current at 270 MHz.

Application Specific Clock/Timing Feature Summary

• Distributes one differential clock input to ten differential outputs with integrated PLL
• Low static phase offset of ±50 ps and low output skew of 35 ps
• Supports spread spectrum clocking (SSC) for EMI reduction
• Operates within -40°C to +85°C temperature range

Application Specific Clock/Timing Applications

• DDR2 SDRAM memory systems
• Clock distribution networks requiring low jitter
• Systems utilizing spread spectrum clocking

Application Specific Clock/Timing Procurement Notes

Verify component status as the CDCU877AZQLT may be discontinued or subject to production changes. Confirm package availability in the 52-ball MicroStar Junior BGA format. Check for updated datasheets or product change notifications regarding lead finish or moisture sensitivity levels before procurement.

Application Specific Clock/Timing Selection Notes

Select this component when a 1.8-V supply is required for DDR2 interfaces. Ensure the design accommodates the 52-ball MicroStar Junior BGA footprint. Verify that the system frequency falls within the 160 MHz to 340 MHz application range to meet all timing specifications.

Application Specific Clock/Timing Part Context

The CDCU877AZQLT belongs to the Texas Instruments CDCU877 family of 1.8-V PLL clock drivers. It is functionally similar to the CDCU877 but optimized for specific 1.8-V performance characteristics. The 'ZQL' suffix denotes the 52-ball MicroStar Junior BGA package.

Application Specific Clock/Timing Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.