The 54F00LMQB: Quad 2-input NAND gate from the 54F series. Four independent gates in a single ceramic DIP or flatpack (Bulk shipment).
However, note the RoHS non-compliant marking — this part uses lead-bearing solder terminations and is not exempt for lead-free assembly lines. If your reflow profile or end-product RoHS declaration requires Pb-free, you will need to source a compliant alternative or secure a waiver.
