PHP & HTML in widget?

Hi
I have a pretty standard bit of code that’s not displaying properly, regardless if I use the “PHP” or the “HTML” option in the widgget.

<?php if( get_field('datasheet') ): ?>
	<p><i class="fa fa-file" aria-hidden="true"></i> <a href="<?php the_field('datasheet'); ?>" target="_blank">Data Sheet</a></p>
<?php endif; ?>

Can you combine the html and the php in one widget?