8-bit bus transceiver with inverted data paths
The key twist here is the inverting outputs — data that goes in on the A side comes out inverted on the B side, and vice versa. That makes it a direct swap for the 74HCT245 only if your board expects inverted logic; otherwise you'll get a bus fight. The DIP-20 package is through-hole, so it's a natural fit for legacy boards, breadboards, or rework where you're replacing a scorched IC on a controller board that still uses leaded solder.
Leaded finish — RoHS non-compliant
But it's listed as RoHS non-compliant, meaning the leads are tin/lead (SnPb) finish, not Pb-free. If your assembly line is RoHS-mandated, this part won't pass; you'd need to look at a Pb-free equivalent like the SN74HCT640N's leaded sibling or a different package variant. For legacy repair work or mil/aero builds that still use SnPb solder, this is exactly what you want — no reliability surprises from mixed metallurgy.
Bulk packaging — plan your handling
If you're feeding a pick-and-place machine, you'll need to transfer the parts to tube feeders or hand-place them. For bench rework or low-volume production, bulk is fine — just be aware of ESD handling: the DIP-20 body is large enough to handle with tweezers, but the leads are delicate, so avoid bending them during insertion.