The Texas Instruments SN74LVC1G126DBVT is a single-bit, non-inverting buffer with a 3-state output, part of the 74LVC family. The 32 mA sink and source capability is enough to directly drive a low-current LED or fan out to several CMOS loads, though for higher fan-out you would buffer through a second gate.
The 1.65 V minimum supply means this part works with 1.8 V logic families (JEDEC standard) and even the low end of a 1.8 V rail with some margin. The 5.5 V maximum covers 5 V nominal rails plus a reasonable tolerance, so you do not need a separate 5 V-tolerant buffer for mixed-voltage boards.
Output drive — 32 mA sink and source
For a typical 3.3 V system, 32 mA can drive a 100 Ω series-terminated trace or a standard LED with a current-limiting resistor. If you need to drive a heavier load like a relay coil or a long cable, plan on a discrete transistor or a dedicated driver; this buffer is sized for signal-level fan-out, not power switching.
Package and footprint — SOT-23-5
Housed in an SC-74A / SOT-23-5 package, this part uses a standard five-pin footprint shared by many single-gate logic devices. The small body saves board area — useful when you need just one buffer in a corner of a dense PCB.
No last-time-buy risk or obsolescence concern for new designs.