The [ULN2003 Arrary](http://www.ti.com/lit/ds/slrs027o/slrs027o.pdf) contains 7 darlington transistors connected with common emitter. 

[![enter image description here][1]][1]


There is even a base resistor included.  You could choose which voltage level you desire, such as ULN2002,  2003 or 2004

[![enter image description here][2]][2]


  [1]: https://i.sstatic.net/wWujy.jpg
  [2]: https://i.sstatic.net/0nb1b.jpg