SK hynix LPDDR5X Earns IEC 61508 SIL 3 and ISO/SAE 21434 Certifications, Expanding Physical AI Safety Standards
SK hynix announced that its LPDDR5X memory and development process have obtained international industrial functional safety and automotive cybersecurity certifications, marking an expansion of its safety capabilities from automotive to broader physical AI applications like robotics and edge AI.
South Korean semiconductor maker SK hynix announced on November 11, 2026, that its LPDDR5X dynamic random-access memory (DRAM) has obtained Safety Integrity Level 3 (SIL 3) certification under the IEC 61508 standard for industrial functional safety. Additionally, its product development process has earned Cybersecurity Management System (CSMS) certification based on the ISO/SAE 21434 standard. Both certifications were granted following rigorous assessments by the global certification body SGS-TÜV Saar (involving both SGS Korea and SGS Japan).
IEC 61508 is the foundational international standard for industrial functional safety, classified into four levels from SIL 1 to SIL 4, with SIL 3 being the highest level attainable for a single memory semiconductor. The standard requires maintaining safety in real time without interrupting system operation in continuous mode, providing a foundation for applications such as real-time robotics control. Previously, SK hynix had obtained ISO 26262 ASIL-D automotive functional safety certification in January 2026; this new certification extends its functional safety credentials beyond automotive applications to a broader range of industrial scenarios including robotics and smart factories.
Regarding cybersecurity, ISO/SAE 21434 is an international standard for automotive cybersecurity that requires managing cybersecurity activities throughout the entire product lifecycle. As vehicles evolve toward the software-defined vehicle (SDV) model and become increasingly connected to external communication networks, the United Nations Economic Commission for Europe (UNECE) has mandated the establishment of a CSMS as a prerequisite for vehicle type approval. The CSMS certification validates SK hynix's capability to safeguard against malicious attacks, complementing its earlier TISAX certification (a global information security standard for the automotive industry) to form a comprehensive safety and security portfolio required by the physical AI market.