RoHS status — compliance check for your BOM
The 5432DM: This part is marked RoHS non-compliant, meaning it contains lead (Pb) in the solder finish or die attach. That is expected for legacy TTL logic in ceramic or hermetic DIP packages. If your BOM requires RoHS exemption (e.g., for aerospace, defence, or medical life-support equipment), this part qualifies.
Sourcing and lifecycle reality
However, because it is RoHS non-compliant, some distributors may carry limited stock or require minimum order quantities. No LTB or PCN risk is indicated.