3:8 address decoding in a 5V logic rail
The SN74AHCT138PW is a single 3:8 decoder/demultiplexer from TI's 74AHCT family, taking a 3-bit binary address and asserting one of eight active-low outputs. The 74AHCT series provides TTL-compatible input thresholds while maintaining CMOS low-power operation — the device draws minimal quiescent current when the inputs are static, which matters in battery-backed or power-sensitive 5V subsystems.
Lifecycle and compliance posture
The 74AHCT family has broad distributor stocking, so lead times tend to be short for reel quantities.