The SN74ALS373ADW is a 74ALS-series D-type transparent latch from Texas Instruments, packing eight latches with tri-state outputs into a 20-SOIC package. The headline timing figure is a 6 ns propagation delay from data input to output, which keeps the latch transparent through fast bus cycles without adding a wait state. Output drive is asymmetric: 2.6 mA sourcing high, 24 mA sinking low — enough to drive a lightly loaded backplane or a bank of TTL inputs, but you'll want to buffer it if the trace runs more than a few inches.
No last-time-buy clock is ticking, no PCN for discontinuation has surfaced.
20-SOIC footprint — board-level fit
Surface-mount assembly is straightforward with standard reflow profiles. The tri-state outputs let multiple latches share a common data bus without contention — just mind the OE# pin timing if you're hot-swapping cards.