QP7C199-15DMB

The QP7C199-15DMB is a high-reliability CMOS static RAM organized as 32K × 8 bits from Cypress, now Infineon Technologies. It is a 256 Kbit asynchronous SRAM with access times as fast as 15 ns (speed grade -15), operating from a single 5 V supply and featuring fully static operation that eliminates the need for external clocks or refresh. The CDIP (ceramic dual-in-line package) provides hermetic sealing, ensuring robust performance across extended temperature ranges and in harsh environmental conditions typical of high-reliability deployments.

This device is commonly deployed in aerospace, defense, and industrial embedded systems requiring deterministic memory performance, including flight computers, radar signal processing, weapons guidance, secure communication platforms, and high-integrity industrial controls. The part number prefix and ceramic package indicate that it is typically qualified to military or high-reliability standards (often processed to MIL-STD-883 or equivalent flows), which adds long-term traceability but also may limit commercial availability. Because the CY7C199 family is a mature Cypress design now managed by Infineon, procurement teams should evaluate product lifecycle status, verify revision and screening level, and source through authorized distribution channels to maintain program continuity and avoid counterfeit risk.