What this zero delay buffer does on the board
The Renesas 2309-1DCGI is a single-circuit zero delay buffer with an integrated PLL that can be bypassed. It takes one LVTTL input and distributes it to nine LVTTL outputs with near-zero propagation delay — the PLL aligns the output edges to the input reference, so the clock tree sees minimal phase shift. Maximum operating frequency is 133 MHz, and the supply range is 3 V to 3.6 V. The PLL bypass mode is the differentiator here: when you need deterministic, low-jitter clock multiplication or deskew, the PLL loop engages; when you just want a clean 1:9 fan-out without loop dynamics, bypass it and the part acts as a straight LVTTL repeater. That flexibility saves a second buffer on the BOM for designs that switch between clock conditioning and simple distribution.
Industrial temperature grade — where it fits
Rated for -40°C to 85°C, this part is specced for industrial environments: motor drives, outdoor telecom cabinets, factory automation panels, and any enclosure that sees seasonal temperature swings. The 16-SOIC package is a standard footprint for through-hole or reflow assembly, and the surface-mount body keeps board area tight.
Sourcing and lifecycle reality
Lifecycle status is Active — no NRND or EOL flag. ROHS3 compliant, so it passes the standard EU restriction list.