LMK1D1204RGTT

LMK1D1204RGTT is a Texas Instruments 2:4 LVDS clock fanout buffer in a 3 by 3 mm VQFN-16, for distributing one or two reference clocks to four differential loads at up to 2 GHz on space-limited boards. It shares the LMK1D family's clock quality: additive jitter below 60 fs RMS maximum, a typical -164 dBc/Hz phase-noise floor, propagation delay under 575 ps maximum and output skew of 20 ps maximum, so a small fanout stage does not become the jitter bottleneck between a clean oscillator and the FPGA, converter or processor it feeds. The supply range of 1.71 V to 3.465 V lets the same buffer sit in 1.8 V, 2.5 V or 3.3 V clock domains, and the operating range is -40 to +105 degrees C for industrial environments. Selection advice: the RGTT code is the 250-piece small-reel ordering option with its own TI part-details listing — for production volumes the RGTR code is the 3,000-piece large-reel equivalent of the identical device, so pick the suffix by reel size, not by electrical differences. Where more than four outputs are needed, step up within the LMK1D family rather than cascading small buffers. Parameters verified against TI documentation for the LMK1D1204.