DALLAS - Chip-maker Texas Instruments Inc. narrowed and slightly raised its third-quarter forecast Tuesday, saying it expects earnings of 49 to 53 cents per share on revenue between $3.56 billion and $3.72 billion.

In July the company said it expected fiscal third-quarter earnings between 46 cents per share and 52 cents per share on revenue between $3.49 billion and $3.79 billion.

The semiconductor company should see revenue between $3.36 billion and $3.50 billion, compared to the previous range of $3.29 billion to $3.57 billion, according to a company statement.

Revenue in its education technology division, which includes handheld calculators, was unchanged and is expected to come in between $200 million and $220 million.

The July sale of a semiconductor product line associated with DSL equipment boosted the per-share earnings estimate by 2 cents, the company said.

Analysts polled by Thomson Financial predicted earnings of 49 cents per share on revenue of $3.66 billion for the quarter ending Sept. 30.

Before the report was released, Texas Instruments shares rose 50 cents, or 1.4 percent, to close at $35.72. The stock fell 67 cents in after-hours trading.

Without getting into specifics, Ron Slaymaker, TI’s vice president of investor relations, said the biggest growth area for the quarter has been high-performance analog chips used in cellular phones and other electronic gadgets.

Slaymaker told analysts in a conference call that wireless chips were seeing mixed demand depending on the customer, while the company’s relatively small education technology division was flat.

Cody Acree, an analyst with Stifel, Nicolaus & Co., said he was encouraged by continued strength in Texas Instruments’ analog sector. “It’s good to see but it’s not surprising,” he said.

The update came a day after Texas Instruments detailed plans to lay off 191 workers whose manufacturing jobs in Dallas are being eliminated and who couldn’t find other positions at the semiconductor company.

The layoffs will begin in early November and be spaced out until the end of January, the Dallas-based company said. The workers will be put on paid leave for 60 days after their release, the company said.

Texas Instruments is also finishing the last of 233 layoffs from two other facilities in Dallas by year end.