Octal inverting buffer with 3-state — 74HC240 in a compact DHVQFN
The NXP 74HC240BQ/C4115 is an octal inverting buffer with 3-state outputs from the 74HC family, designed for bus-oriented applications requiring signal inversion and output disable capability. The two elements, each handling four bits, provide eight inverting channels with a balanced 7.8mA sink and source drive at both output states.
The wide temperature grade eliminates the need to derate or qualify a separate industrial-tier variant for mixed-temperature BOM lines.
20-DHVQFN with exposed pad — layout notes
The 0.5 mm pitch fine-pitch QFN calls for a controlled impedance PCB if the bus traces run longer than a few centimetres at 5V edge rates. The supplier device package is 20-DHVQFN (4.5x2.5).