TI Narrows Forecast for Fourth Quarter  LOS ANGELES (Reuters) - Texas Instruments Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=TXN.N target=/stocks/quickinfo/fullquote"&gt;TXN.N&lt;/A&gt;, the  world's largest maker of chips for cell phones, on Tuesday said  it expects fourth-quarter revenue and earnings per share at the  mid range of its previous estimates, as order trends remain  soft and an inventory correction continues.