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Texas Instruments

(TXN) - Get Texas Instruments Incorporated Report

was down 4% in early trading after

Lehman Brothers

cut its first-quarter earnings estimate to $1.48 from $1.53.

Other chipmakers were also lower.

Intel

TheStreet Recommends

(INTC) - Get Intel Corporation Report

, which unveiled its

Pentium 4

processor today, was down 3.4%. The

Semiconductor Index

(SOX)

was down 3%.