ALS-Series Bus Driver — Active Production, RoHS Non-Compliant
The SN74ALS29825DW is a bus driver from the ALS (Advanced Low-Power Schottky) logic series, a workhorse family for 5 V bus-interface applications where speed and drive capability balance against power dissipation. A critical compliance note: the device is RoHS non-compliant. This rules it out for new European CE-marked products under the RoHS directive unless an exemption applies. It is, however, fully acceptable for legacy repair, mil/aero, or other exempt applications where lead-bearing solder is permitted.
Package and Supply Chain Reality
Shipped in Bulk — loose tubes, not tape-and-reel. For a pick-and-place line, this means manual tube feeding or a tube feeder; it will not run on a standard tape feeder. Plan the assembly kitting accordingly. The category tree places this under Discrete Semiconductors, which is a cataloguing quirk — it is a logic IC, not a transistor or diode. The actual device function is a bus driver with 3-state outputs, designed to drive heavily loaded backplane or memory-address buses. No stock-holding claim on this specific date-code or lot.
No Drop-In Replacement from Peers
The SN74ABT2245DW is a transceiver (bidirectional) in a different package orientation, and the SN74LS645-1N is a through-hole transceiver with a 0–70°C commercial temperature range. Neither is a functional second-source for the SN74ALS29825DW. The BOM line should be sourced against the exact order code.