Clock tree in a 4x4 QFN
The Renesas 5P49V6965A000NLGI is a single-circuit clock generator from the VersaClock 6E family. It takes one of two differential or single-ended inputs — HCSL, LVCMOS, LVDS, LVPECL, or a crystal — and produces up to four output clocks in those same formats, all through an internal PLL with bypass capability. The maximum output frequency hits 350 MHz. Supply range runs from 1.71 V to 3.465 V. The 24-QFN package (4x4 mm) with exposed pad keeps thermal impedance low in dense telecom or industrial control boards.
What the I/O flexibility means for the BOM
Because the input stage accepts HCSL, LVCMOS, LVDS, LVPECL, and crystal, and the outputs mirror that set, you avoid external level translators or AC-coupling caps on every clock line. The 2:4 input-to-output ratio means you can fan out one clean reference to four destinations — for example, one FPGA transceiver bank and three Ethernet PHYs — without adding a separate fanout buffer. The PLL bypass mode is useful when you need to pass through a clean low-jitter reference without the loop filter adding phase noise; the part still buffers and distributes it to all four outputs.
Temperature grade and deployment environment
Rated for -40°C to 85°C, this is an industrial-temperature device. It fits outdoor telecom cabinets, factory-floor Ethernet switches, base station line cards, and test equipment that sees seasonal swings. It is not qualified to AEC-Q100, so it is not the pick for under-hood or chassis-domain automotive modules. For indoor rack-mount gear the full temperature margin is overkill, but the wide supply range and small footprint still make it a clean fit.
Lifecycle and sourcing reality
The 5P49V6965A000NLGI is listed as Active and ROHS3 compliant. For a BOM freeze or a new-design clock tree, this part carries no last-time-buy risk. The VersaClock 6E family is current-production, so factory lead times apply for volume — not a surplus-only part.