CDCU877GQLT

Application Specific Clock/Timing Overview

The CDCU877GQLT is a 1.8-V phase-locked loop clock driver designed for DDR2 applications, distributed in a 52-ball MicroStar Junior BGA package. It features a 1:10 multiplication factor, distributing one differential clock input to ten differential outputs and one feedback pair. The device operates within a frequency range of 10 MHz to 400 MHz with a supply voltage of 1.7 V to 1.9 V. Key electrical specifications include a low static phase offset of ±50 ps, cycle-to-cycle jitter of ±30 ps (at 160–340 MHz), and output skew of 35 ps. It supports spread spectrum clocking and consumes less than 135 mA under dynamic conditions.

Application Specific Clock/Timing Feature Summary

• Distributes one differential clock input to ten differential outputs and one feedback pair
• Low static phase offset of ±50 ps and cycle-to-cycle jitter of ±30 ps
• Supports spread spectrum clocking for EMI reduction
• Operates at frequencies from 10 MHz to 400 MHz

Application Specific Clock/Timing Applications

• DDR2 SDRAM memory systems
• High-speed digital signal processing
• Communication infrastructure equipment

Application Specific Clock/Timing Procurement Notes

Verify the component status as LIFEBUY, indicating the device is discontinued but available for lifetime purchase. Confirm the specific GQL suffix corresponds to the 52-ball MicroStar Junior BGA package. Ensure compliance with RoHS standards and check moisture sensitivity level ratings before procurement.

Application Specific Clock/Timing Selection Notes

Select this component when designing DDR2 memory interfaces requiring low-jitter clock distribution. Ensure the design accommodates the 1.8-V supply voltage and the 52-ball BGA footprint. Verify that the operating temperature range of -40°C to 85°C meets system requirements and that the PLL stabilization time fits the power-up sequence.

Application Specific Clock/Timing Part Context

The CDCU877GQLT belongs to the CDCU877 family of 1.8-V PLL clock drivers. It shares core functionality with variants like the CDCU877AZQLT and CDCU877ARHAR, differing primarily in package type and manufacturing lifecycle status. The GQL suffix specifically denotes the 52-ball MicroStar Junior BGA configuration.

Application Specific Clock/Timing Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.