CDCU2A877ZQLR

Application Specific Clock/Timing Overview

The CDCU2A877ZQLR is a 1.8-V Phase-Lock Loop Clock Driver designed for DDR2 SDRAM applications, manufactured by Texas Instruments. It operates within a supply voltage range of 1.7 V to 1.9 V and supports an operating frequency from 125 MHz to 410 MHz. The device features spread spectrum clock compatibility and is housed in a 52-BGA Microstar Junior package measuring 7x4.5 mm. It functions as a zero-delay buffer and multiplexer with one output. The component supports surface mount installation and has an operating temperature range of 0°C to 70°C.

Application Specific Clock/Timing Feature Summary

• Provides high output drive capability specifically optimized for DDR2 SDRAM memory interfaces.
• Functions as a zero-delay buffer and multiplexer to ensure precise clock signal alignment.
• Supports spread spectrum clocking techniques to reduce electromagnetic interference.

Application Specific Clock/Timing Applications

• DDR2 SDRAM memory interface clock distribution
• High-speed digital system clock buffering
• Zero-delay clock alignment circuits

Application Specific Clock/Timing Procurement Notes

Verify the specific suffix ZQLR against the official datasheet to confirm package type and tape/reel specifications. Confirm that the 0°C to 70°C industrial temperature range aligns with your environmental requirements. Check for end-of-life notifications or discontinuance notices, as availability may be limited. Ensure ESD handling procedures are followed due to moisture sensitivity classification.

Application Specific Clock/Timing Selection Notes

Select this component when a dedicated PLL clock driver with high drive strength is required for DDR2 systems. Consider the 52-BGA Microstar Junior package constraints for PCB layout. Evaluate the 125 MHz to 410 MHz frequency range against system timing needs. Compare against similar family members like CDCUA877 if different voltage or temperature ratings are necessary.

Application Specific Clock/Timing Part Context

This part belongs to the CDCUx877 series of phase-lock loop clock drivers from Texas Instruments. These devices are engineered for low jitter and low offset performance. The series includes variants tailored for specific memory standards, providing integrated buffering and multiplexing capabilities essential for complex clock tree architectures in high-performance computing applications.

Application Specific Clock/Timing Replacement Considerations

Consult the official replacement list for discontinued parts. Potential substitutes include other members of the CDCUx877 family such as CDCUA877, provided pinout and electrical characteristics match the design requirements. Verify functional equivalence before substitution.