SN74AHC1G125DBVR

SN74AHC1G125DBVR is a single bus buffer with a 3-state output in a five-pin SOT-23 (DBV) package, the one-gate member of TI's AHC family. The selection point is late-stage bus repair: when a prototype or a cost-reduced respin leaves one signal that needs isolation, drive-strength help or a clean disconnect point, this single gate drops into the net without re-laying out a quad or octal device. The AHC process operates from 2 V to 5.5 V with CMOS-level input thresholds and balanced propagation delays, suiting mixed 3.3 V and 5 V legacy logic in industrial controls, meters and consumer boards. The output enable lets the line be floated for shared-bus and test access, and the low static consumption of the AHC family keeps always-on control paths cheap on power. Selection advice: check the input threshold family before ordering — this AHC version expects CMOS levels, while the AHCT1G125 listed alongside it in this catalog accepts TTL levels on a 5 V rail for true legacy interfaces. The two share a footprint but are not threshold-compatible substitutes, so confirm the exact code against your driving logic. Parameters verified against Texas Instruments documentation.