Altera Updates Second Quarter Guidance

Narrows to High End of Range

SAN JOSE, Calif.--June 3, 2008--Altera Corporation today announced its mid-quarter update for the second quarter of 2008.

The company now expects that sequential revenue growth will be toward the high end of the company's previous 1 to 4 percent guidance.

Compared to the same period in the prior quarter, the company's new product category is demonstrating strong and broad-based growth, led once again by Stratix(R) II FPGAs. In addition, Altera's 65-nm FPGAs, comprised of the low-cost Cyclone(R) III and the high-end Stratix III families, are experiencing very strong sequential growth. As anticipated, sales to the company's communications equipment customers continue to strengthen.

The company will announce second quarter results after market close on July 15, 2008.

About Altera

Altera's programmable solutions enable system and semiconductor companies to rapidly and cost-effectively innovate, differentiate and win in their markets. Find out more at www.altera.com.