This was for the Applications Rotation Program (which is how the majority of applications engineers now enter TI).
Amazingly quick turnaround time for interviews. Had an on campus interview, which was a mix of behavior / technical. Second round video call with a factory applications engineer & field applications engineer. Was invited to a final round interview in Dallas for the following week. All expenses paid for the final round interview.
For the final round interview, they flew me out to Dallas, rented a car, and set me up with a nice 2 room suite at nearby hotel. You'll be taken out to dinner with a group of applications engineers who started in the program within the last year. It's a stress free time to learn more about TI and the people who work there. They have no influence on the selection process.
The next day was a day of interviews. Your morning may start as early as 7 am or as late as 10 am depending on how many people they are interviewing. I had 2 interviews, each with 2 applications engineering managers. One from the factory side, one from the field side. Interviews lasted 45 minutes each. They provide lunch. For the remainder of your time, you will be given a tour of the a portion of the Dallas facility (you get to see some of the building, but not really any of the labs or where engineering work is occurring). They'll also give you a comprehensive presentation on the benefits of Texas Instruments. Take it with a grain of salt, they do have many nice benefits, but a lot of them are pretty standard throughout the semiconductor industry.
The final round interviews were also a combination of technical and behavior. You are asked to prepare a short presentation on a significant project you have worked on. They'll ask you some behavior questions, go through your presentation, and then go through some basic technical questions. Examples of behavior questions include ("when was a time that your project failed?", "when was a time that you had conflict with people on a team, how did you resolve it?") Some examples of technical questions were explaining how to build basic digital logic gates, filter design, and some op amp circuit questions. It really depends on the skill set of the interviewer. If they're in the op-amp group, you'll likely get op amp questions and so forth.
They got back to me with an offer within 24 hours of the final interview. HR was very responsive to any questions. Really great interview process.