Intersil ( ISIL), a semiconductor manufacturer, said Wednesday its second-quarter earnings more than doubled on stronger sales in high-end consumer, industrial and communication markets. The Milpitas, Calif.-based company earned $43 million, or 30 cents a share, in the quarter, compared with $17.3 million, or 12 cents a share, a year ago. Analysts surveyed by Thomson First Call were expecting earnings of 30 cents a share in the most recent quarter. Second-quarter revenue rose 34.9% from a year ago to $187.6 million as against analysts' expectation of $186 million. The company expects to earn 25 cents a share, or 32 cents a share after adjustments, in the third quarter. Revenue is expected to be 3% to 5% higher than in the second quarter. Analysts are expecting earnings of 32 cents a share, on revenue of $195.4 million in the third quarter. "We expect solid growth in our industrial and communication end markets," the company said. "There is currently softness in computing and several consumer related products, which is limiting our visibility into the third quarter." Shares dropped $2.45 Thursday to $21.50.