Supply range and temperature — the selection drivers
The 3V to 18V supply is the headline rating. It means this gate runs off a 3.3V or 5V rail, but also off a 12V unregulated bus or a lithium primary cell stack. That flexibility is why 4000B parts still get specced into new designs where a 74LVC or 74AHCT part would need an extra regulator. The -55°C to 125°C temperature grade covers military, avionics, and downhole applications — the same part that sits in a lab breadboard can go into a sealed outdoor controller without a grade change.
Output drive and speed — what the numbers mean for the BOM
3.4 mA sink and source per output. 90 ns propagation delay at 15V, 50 pF.
Lifecycle and sourcing
The CD4082BNSR is listed as Active and ROHS3 compliant. This is a current-production part from the 4000B line, which means it stays available for BOM stability.