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Specialty chipmaker



was down 14.1% in preopen


trading after two brokerages downgraded its stock.

Salomon Smith Barney

cut it to outperform from buy and lowered its price target to $100 from $110.

Lehman Brothers

cut it to neutral from outperform and sliced its target to $90 from $100.

The stock has fallen 9.1% in the past two sessions as earnings jitters affected the chip sector.