Six inverters in a DIP — field-service staple
The Texas Instruments SN74AHCT04N is a hex inverter from the 74AHCT logic family. It packs six independent NOT gates into a single 14-pin DIP package, each with a single input and a standard push-pull output rated for 8 mA source and sink. The 4.5 V to 5.5 V supply range makes it a direct drop-in for 5 V TTL or CMOS systems — the input thresholds are TTL-compatible (0.8 V low, 2 V high), so it works with older 5 V logic without level-shifting. Propagation delay is 7.7 ns typical at 5 V with a 50 pF load, fast enough for most board-level glue logic, clock gating, or signal inversion.
Temperature range and environment
Rated for -40°C to 125°C operating temperature, this part covers industrial control, outdoor telecom, and under-hood automotive environments that see wide thermal swings. The through-hole DIP package (14-DIP, 0.300" body width) is socket-friendly and field-replaceable — no hot-air station needed, no risk of tombstoning. If you are repairing a board on site, this is the kind of part you keep in the kit.
Active production, easy sourcing
The SN74AHCT04N carries an active lifecycle status — no end-of-life notice, no last-time-buy deadline to track. Texas Instruments lists it as current production, and it is widely available through independent distribution. For a BOM line that needs a reliable, non-obsoleting hex inverter, this part is a safe choice.