The Texas Instruments LMK01020ISQE/NOPB is a 1:8 fanout buffer and clock divider accepting a differential clock input and delivering LVPECL outputs up to 1.6 GHz. That 1.6 GHz ceiling is the key spec: it places this part squarely in high-speed serial-clock distribution — think ADC/DAC reference clocks, FPGA reference clocks, or SerDes PLL reference trees — where a lower-frequency buffer would limit the system's maximum data rate. The supply range is tight at 3.15 V to 3.45 V, so this is not a part you drop onto a noisy 3.3 V rail without local regulation. Plan for a dedicated LDO or a clean rail from a switching supply with post-filtering. The LVPECL outputs need proper termination — typically 50 Ω to VCC − 2 V — which adds a few resistors per output but keeps edge rates clean at 1.6 GHz.
ROHS3 compliant. For a high-speed clock tree that will stay in production for several years, this part avoids the last-time-buy scramble.
Differential input and output — layout matters
Both the single clock input and all eight LVPECL outputs are differential (Yes/Yes per). That means the input is typically AC-coupled and driven from a differential source (LVDS, LVPECL, CML). On the output side, each LVPECL pair needs 100 Ω differential impedance traces and proper termination resistors close to the receiver. The 1:8 ratio fans a single clock to eight destinations — enough for a multi-channel ADC array or a partitioned FPGA clock tree.