Single XOR gate with Schmitt-trigger inputs — what that buys you
The TI SN74AHC1G86DCKT is a single 2-input XOR gate from the 74AHC family, with Schmitt-trigger inputs on both pins. The Schmitt trigger means the input thresholds are 0.5 V to 1.65 V (low) and 1.5 V to 3.85 V (high) across the supply range — so a slow-rising or noisy signal from a sensor or a long PCB trace won't cause the output to chatter or oscillate. It's a glue-logic part for industrial control boards, telecom line cards, or any mixed-voltage design where you need to XOR two digital signals and can't afford false edges.
The supply range covers 2 V to 5.5 V. At 5 V the max propagation delay is 8.8 ns into a 50 pF load. Quiescent current is 1 µA max.
No end-of-life notices are on record. For a BOM freeze, this is a safe choice — no PCN watch needed for the foreseeable future. The 74AHC series is a mature logic family with broad distribution support, so lead times are typically standard through the channel.