Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the following registration statements of Texas Instruments Incorporated and in the related prospectuses of our reports dated February 22, 2019, with respect to the consolidated financial statements of Texas Instruments Incorporated, and the effectiveness of internal control over financial reporting of Texas Instruments Incorporated, included in this Annual Report on Form 10-K for the year ended December 31, 2018: Registration Statements (Forms S-8) No. 333-158933, No. 333-158934, No. 33-42172, No. 33-54615, No. 33-61154, No. 333-07127 (as amended), No. 333-41913, No. 333-41919, No. 333-31321 (as amended), No. 333-31323, No. 333-48389, No. 333-44662, No. 333-107759, No. 333-107760, No. 333-107761, No. 333-127021, No. 333-177235, No. 333-195692, No. 333-211111 and No. 333-224639; Registration Statements (Forms S-3) No. 333-165045, No. 333-186803 and No. 333-209678; and Registration Statements (Forms S-4) No. 333-89433 (as amended), No. 333-87199, No. 333-80157 (as amended), and No. 333-41030 (as amended).

/S/ ERNST & YOUNG LLP

ERNST & YOUNG LLP

Dallas, Texas

February 22, 2019