Rambus Inc. manufactures and sells semiconductor products in the United States, South Korea, Singapore, and internationally. The company offers DDR memory interface chips comprising DDR5 memory interface chips which include registering clock driver, multiplexed registering clock driver, multiplexed data buffer, power management integrated circuits, serial presence detect hubs, temperature sensors, and client clock driver products; and DDR4 memory interface chips. It also provides silicon IP, such as interface and security IP solutions that move and protect data in advanced data center, government, and automotive applications; interface IP solutions for high-speed memory and chip-to-chip digital controller IP; security IP solutions, including crypto cores, hardware roots of trust, high-speed protocol engines, and chip provisioning technologies.