Updated from 12:17 a.m. ESTDALLAS ( TheStreet) -- Shares of Texas Instruments ( TXN) fell in after-hours trading Monday after it raised the low end of its first-quarter earnings guidance. Texas Instruments said it expects earnings of 48 cents to 52 cents a share; its prior outlook announced in January called for first-quarter earnings of 44 cents to 52 cents a share. Revenue is expected at $3.07 billion to $3.19 billion; its prior guidance was for revenue of $2.95 billion to $3.19 billion. Analysts surveyed by Thomson Reuters forecast first-quarter earnings of 49 cents a share on revenue of $3.08 billion. Texas Instruments shares fell 23 cents, or 0.93%, to $24.46 in after-hours trading Monday. -- Reported by Joseph Woelfel in New York. Follow TheStreet.com on Twitter and become a fan on Facebook.