The LMK03000DISQ/NOPB is a clock conditioner from Texas Instruments, providing a 1:8 fanout from a single differential or single-ended input. It accepts LVCMOS, LVDS, or LVPECL levels and delivers LVDS or LVPECL outputs, with a maximum frequency of 1.296 GHz. It does not include an internal PLL — the signal path is a clean fanout buffer/conditioner, not a synthesizer.
Housed in a 48-WFQFN with an exposed pad (supplier package 48-WQFN, 7x7 mm), the part requires a thermal land on the PCB to draw heat from the die pad. Surface-mount, tape-and-reel packaging (TR) — the reel quantity is the standard TI reel count for this package size. No MSL rating is listed in the spec record, but WFQFN packages typically ship at MSL 3; confirm the label before the bake decision.