QP7C199-20DMB

The Infineon QP7C199-20DMB is a 32K x 8 (256 Kbit) asynchronous CMOS static random-access memory (SRAM) developed from the CY7C199 family for high-reliability environments. It provides a 20 ns maximum access time, as indicated by the speed grade suffix, and operates from a single 5 V supply. The device leverages a low-power CMOS design with an automatic power-down mode when deselected, reducing standby current. Packaged in a ceramic dual-in-line (CDIP) configuration, the memory offers robust thermal performance and environmental resilience suitable for extended temperature ranges and mechanically demanding installations.

The SRAM is used in mission-critical embedded systems such as avionics computers, radar processors, and defense-grade platforms where deterministic timing and data integrity are essential. It also functions as scratchpad memory, data buffers, and cache in industrial control, downhole instrumentation, and long-lifecycle field equipment. The QP prefix identifies a qualified product line subject to elevated screening and conformance testing, typically aligning with military and aerospace procurement requirements. Engineering and supply chain teams should evaluate lead times, minimum order quantities, and potential obsolescence risk given the specialized nature of hi-rel SRAMs. Securing traceable, authorized distribution channels is critical for pedigree assurance and program compliance.