\documentclass{standalone}
\usepackage{circuitikz}

\begin{document}
\begin{circuitikz}
	\tikzset{alu/.style={muxdemux,
		muxdemux def={Lh=5, NL=2, Rh=2, NR=1, NB=1, NT=1, w=2,
			inset w=1, inset Lh=2, inset Rh=0, square pins=1}}}
	\node [alu, font=\tiny, color=white] at (0, 0) {\rotatebox{90}{\tiny ALU}};
\end{circuitikz}
\end{document}