\documentclass[12pt,tikz]{standalone}
\pdfinfoomitdate 1
\pdfsuppressptexinfo 1
\pdftrailerid{}
\usepackage[utf8]{inputenc}
\pagestyle{empty}

\begin{document}
\begin{tikzpicture}
	\node[inner sep=0pt] at (0,0)
		{\includegraphics[height=\linewidth]{cmos_00.pdf}};
	\node[inner sep=0pt] at (2,-8)
		{\includegraphics[width=\linewidth]{cmos_01.pdf}};
\end{tikzpicture}
\end{document}