ALS-series XOR gate — still in active production
The SN74ALS136N is a single 2-input XOR gate from Texas Instruments' ALS (Advanced Low-Power Schottky) logic family. It performs the exclusive-OR function on two inputs, delivering a high output when the inputs differ.
RoHS non-compliant — plan accordingly
For legacy BOMs or repair work that allows leaded solder, that's fine. For new designs requiring RoHS compliance, you'll need to look at the lead-free ALS or AHCT equivalents. The lifecycle status is Active, so TI is still manufacturing it — no last-time-buy pressure.
Bulk package — rework-friendly
That's a plus for the rework bench: no carrier tape to deal with, and the DIP package is easy to hand-solder or hot-air remove. The wide pin spacing and through-hole leads mean you can lift the part without lifting the pad, even with a basic iron.