1.6 GHz clock fanout — what the 1:8 ratio buys you
The LMK01020ISQ/NOPB is a Texas Instruments fanout buffer and divider that takes one clock input and distributes it to eight LVPECL outputs at frequencies up to 1.6 GHz. The 1:8 ratio means a single oscillator or PLL output can drive eight downstream loads — ADC/DAC clock inputs, SerDes reference clocks, FPGA global clock pins — without needing a separate buffer per load. Both input and output paths are differential (Yes/Yes), which preserves signal integrity across the board and rejects common-mode noise picked up on long traces.
Supply rail and thermal environment
The part runs from a 3.15 V to 3.45 V supply — a tight 3.3 V ±4.5 % rail.
No official pin-compatible second source or successor is listed in the family, so the BOM depends on this exact TI part number.