Dual 4-input NAND gate in 74AC — where it fits
It operates across a 1.5V to 5.5V supply range, making it suitable for mixed-voltage boards where a 3.3V core interfaces with 5V peripherals. The 24 mA symmetric output drive (both source and sink) handles typical fan-out to multiple CMOS or low-power TTL loads without external buffers. The 4 µA max quiescent current keeps the standing power negligible in battery-backed or always-on sections.
The max propagation delay is 12.2 ns at 5V with a 50 pF load.