TINA Design Suite is a powerful yet affordable circuit simulator and PCB design software package for analyzing, designing, and real time testing of analog, digital, HDL, MCU, and mixed electronic circuits and their PCB layouts. You can also analyze SMPS, RF, communication, and optoelectronic circuits; generate and debug MCU code using the integrated flowchart tool; and test microcontroller applications in a mixed circuit environment. A unique feature of TINA is that you can bring your circuit to life with the optional USB controlled TINALab II and LabXplorer hardware, which turns your computer into a powerful, multifunction T&M instrument. Electrical engineers will find TINA an easy to use, high performance tool, while educators will welcome its unique features for the training environment. 
TINA is an acronym of "Toolkit for Interactive Network Analysis.

Please note that Tina 11 Demo models/spicelibs/macrolib folders are compatible with this torrent. Download the latest demo first and copy said folders somewhere safe, delete the demo and install this version. Copy said folders to your Tina 9 directory