IDT7133LA55G

The IDT7133LA55G is a high-speed 2K x 16 dual-port static RAM designed and manufactured by Renesas Electronics, inheriting a legacy architecture from the IDT 7133/7143 family. This device provides two independent ports with full asynchronous access to a shared 32K-bit memory array, enabling simultaneous read/write operations from separate buses. The LA55G speed grade delivers a 55 ns access time, and the on-chip arbitration logic with interrupt flag capability supports efficient interprocessor communication without external wait states. Housed in a ceramic pin grid array (CPGA) package, the memory is physically robust and suited for environments requiring extended temperature performance and high reliability.

Typical applications include multiprocessor systems in military and aerospace avionics, radar and signal processing platforms, industrial automation controllers, and telecommunication infrastructure where shared-memory architectures reduce component count and latency. The dual-port SRAM serves as a mailbox buffer between DSP and microcontroller blocks, or between redundant control planes in safety-critical designs. Procurement considerations for this part revolve around its ceramic package, which indicates industrial or extended-temperature qualification but does not carry a /883 military screening suffix. While Renesas maintains long-term supply programs for many legacy IDT products, the IDT7133LA55G sits in a mature product class where lifecycle status should be verified to anticipate potential EOL risks. Sourcing through authorized distribution ensures traceable, genuine components and access to manufacturer-controlled inventory.