DDR2 clock distribution with integrated PLL
The Texas Instruments CDCU2A877NMKT is a 1.8V phase-lock loop clock driver designed specifically for DDR2 memory systems. It takes one clock input and fans it out to ten differential clock outputs (1:10 ratio), providing the low-jitter, matched-delay clock trees that DDR2 DIMMs require for reliable read/write timing. With a maximum frequency of 410 MHz, this part comfortably covers DDR2-800 and slower memory interfaces. The differential input and output (Yes/Yes per the spec) keep common-mode noise rejection high, which matters when routing clocks across a multi-layer motherboard.
No additional regulator is needed if the memory bus is already at 1.8V. This suits desktop, server, and networking equipment in climate-controlled environments but is not rated for extended industrial or automotive ambient ranges.
The CDCU2A877NMKT comes in a 52-VFBGA package (supplier device package 52-NFBGA, 7x4.5 mm). This is a fine-pitch BGA — hand-soldering is impractical; a controlled SMT reflow profile with stencil-printed solder paste is the standard assembly method. Surface-mount mounting type and the small footprint make it suitable for dense PCB layouts where clock distribution must sit close to the memory controller or DIMM slots to minimise trace skew.
ROHS3 compliant — no exemptions that might complicate EU or other regulated-market shipments. No additional compliance documentation (REACH, UL, IEC) is cited in the available record.