What this 1:9 fanout buffer does on the board
The 2309NZ-1HPGG is a non-differential fanout buffer from Renesas that takes one LVTTL clock input and distributes it to nine LVTTL outputs, running up to 133.33 MHz.
Pinout and footprint — what swaps in the field
Housed in a 16-TSSOP (4.40 mm width) with a surface-mount footprint, the 2309NZ-1HPGG is a straightforward hand-solderable part if you have a fine tip and steady hands — no hot-air station required for a single swap. The 1:9 ratio means it occupies more board real estate than a 1:5 buffer like the 2305NZ-1HDCG, but the pinout is different enough that you cannot just drop one in without checking the layout.
Supplied in tube packaging; the 16-TSSOP body is standard across the 2309 family, so your pick-and-place feeders and reflow profile should carry over from similar parts.