9DML4493ANLGI8

• 4:4 Clock Multiplexer for PCI Express Reference Clocks
• Supports PCIe Gen1 Through Gen6 Signalling Generations
• LP-HCSL Output type, Up to 350M Hz Output Frequency
• 1.71V to 3.465V Input Supply Range
• 32-Pin VFQFN, 5mm X 5mm, 500µm pitch, 900µm Height
• Production Lifecycle status, RoHS compliant, 2, 500 per Package

The Renesas 9DML4493ANLGI8 is a 4:4 clock multiplexer for PCI Express, supporting reference clock distribution for PCIe Gen1 through Gen6. It provides LP-HCSL outputs at frequencies up to 350M Hz and accepts an input supply from 1.71V to 3.465V. The device is supplied in a 32-pin VFQFN package measuring 5mm by 5mm with a 500µm pitch and 900µm height, shipped in quantities of 2, 500. 9DML4493ANLGI8 is an active production part.

PCI Express endpoints require a low-jitter reference clock, and a clock multiplexer lets a board select between multiple clock sources, for example switching from an onboard oscillator to an externally supplied clock without rerouting traces. Supporting Gen1 through Gen6 means the same device can serve legacy and current-generation links, so one part number covers a range of designs. LP-HCSL is the low-power differential clock format used for PCIe reference distribution, chosen because it reduces the termination power that classic HCSL requires. Devices like this are designed into server and storage motherboards, PCIe switch and retimer cards, network interface and accelerator boards, and embedded compute modules where clock source redundancy or test-mode clock injection is required.