Open-collector NAND: when you need wired-OR or level shifting
The SN74F38NSR is a quad 2-input NAND gate from the 74F family, but with open-collector outputs instead of the standard totem-pole stage. That means the output can only sink current (64 mA max per the entry) and cannot source it — the pull-up resistor is external. The 12.5 ns propagation delay at 5 V and 50 pF load puts it in the middle of the 74F speed band — fast enough for most 5 V logic paths but not the fastest option if you are pushing 50+ MHz clock trees.
Housed in a 14-SOIC package with a 5.30 mm body width and the supplier device package designated 14-SO. The 1.27 mm pitch is standard SOIC — no fine-pitch surprises. Surface-mount only.
No official second-source cross-reference is published, but the 74F family is mature and widely second-sourced through multiple vendors — a BOM hedge is feasible if supply tightens.