Could someone help me with a \tikzstyle for this trapezium block:

I tried but look how it looks like:

The main problem it is in how to set the text (0 1) in the right place.
The code I'm using to \tikzstyle and \node it is presented below:
\tikzstyle{mux} = [ trapezium, draw,
rotate = 270, trapezium angle = 60,
minimum height = 1em,
inner ysep=10pt, outer sep=1pt, inner xsep=1pt,
text width = 1em,
node distance=3cm, text badly centered ]
\node [mux, above of=sum1,align=center] (mux11)
{\begin{large}\begin{sideways}0\end{sideways}\begin{sideways}\medskip 1\end{sideways}\end{large}};
I'm trying to draw a digital datapath so I'll use this block many times.

\documentclass{...}and ending with\end{document}. – Marco Daniel May 11 '13 at 17:11