PCIe clock generator with spread spectrum — what it does and where it fits
The Renesas 5V41236PGG is a single-circuit PLL-based clock generator built for PCI Express (PCIe) reference-clock trees. It takes a single-ended clock or crystal input and delivers four differential HCSL or LVDS outputs at up to 200 MHz, with spread-spectrum modulation to reduce EMI. The 1:4 fanout ratio fits a typical motherboard or add-in card where one clock source feeds a handful of PCIe slots or endpoints. The industrial temperature range (-40°C to 85°C) means it can live in outdoor telecom gear, industrial backplanes, or unventilated enclosures without derating.
200 MHz ceiling and differential outputs — what they mean for your PCIe generation
The 200 MHz maximum covers PCIe Gen1, Gen2, and Gen3 reference clocks. Differential outputs are standard for PCIe reference clocks.
Active lifecycle — no LTB risk, no obsolescence watch
The 5V41236PGG carries an Active lifecycle status and is ROHS3 compliant. There is no last-time-buy notice, no NRND flag, and no announced end-of-life. For a BOM freeze or a production build, this part does not carry the sourcing risk that comes with a phase-out. If you are qualifying a new design, it is safe to commit to this order code without planning for a future substitute.
Package and supply — board-fit details
The 20-TSSOP package (4.40 mm wide, 0.173" pitch) is a surface-mount footprint. Supply voltage is 3.135 V to 3.465 V.