Lattice Semiconductor Corporation is an American manufacturer of high-performance programmable logic devices (FPGAs, CPLDs, & SPLDs).  Founded in 1983, the company employs about 700 people and has annual revenues of around $300 million, with Darin Billerbeck as the chief executive officer.  The Oregon-based company is the number three ranked company in world market share for field programmable gate array (FPGA) devices,  and number two for CPLDs & SPLDs.  The company went public in 1989 and is traded on the NASDAQ stock exchange under the symbol LSCC.
Lattice was founded on April 3, 1983, by C. Norman Winningstad, Rahul Sud and Ray Capece. Winningstad, Harry Merlo, Tom Moyer, and John Piacentini were the early investors in the company. Co-founder Sud left as president in December 1986, and Winningstad left in 1991 as chairman of the board. Lattice was incorporated in Oregon in 1983 and reincorporated in Delaware in 1985. Early struggles led to chapter 11 bankruptcy reorganization in July 1987. The company emerged from bankruptcy after 62 days and moved into a smaller headquarters in Hillsboro, Oregon, from what was then an unincorporated area near Beaverton.
The next year the company posted then record revenues while shrinking from 140 employees to 75 employees after the bankruptcy.
In 1995, the company attempted to assert trademark rights in the term Silicon Forest beyond the use of its trademark for the use in semiconductor devices. They had registered the mark in 1985, but later conceded they could not prevent the usage of the term as a noun. Forbes ranked the company as their 162nd best small company in the United States in 1996.
In 1996, Lattice began expansions at its Hillsboro, Oregon, headquarters to double the size of the facility.
In 2004, the company settled charges with the United States government that it had illegally exported certain technologies to China, paying a fine of $560,000.
On December 9, 2011, Lattice announced it was acquiring SiliconBlue for $63.2 million in cash.
In April 2016, Tsinghua Holdings said in a U.S. filing that it accumulated a roughly 6 percent stake in Lattice Semiconductor through share purchased on the open market.  In November, 2016, Canyon Bridge Capital Partners announced a definitive agreement to acquire all of Lattice's shares.  The purchase of Lattice by Canyon Bridge was in September 2017 blocked by US President Donald Trump based on the recommendation of the Committee on Foreign Investment in the United States on national security grounds under the Exon–Florio Amendment.    
In addition to CPLDs & SPLDs, Lattice also manufactures field-programmable gate arrays (FPGAs), programmable mixed-signal and interconnect products, related software and intellectual property (IP).  Lattice's main products are the ECP and XP series of FPGAs (field-programmable gate arrays), the Mach series of CPLDs (complex programmable logic devices), the ispPAC POWR series of programmable power management products (programmable mixed signal FPAA) and Lattice Diamond design software.  At the 90 nm node, Lattice offers a variety of FPGA devices. Products are used in a variety of end uses, such as flat-panel televisions and laptops. 
The company is headquartered in Hillsboro, Oregon, in the high-tech area known as the Silicon Forest.