What this dual-port SRAM does and where it fits
The Cypress CY7C145-35JXC is a 72Kbit dual-port asynchronous SRAM organized as 8K words by 9 bits. The dual-port architecture allows two independent systems or processors to read from and write to the same memory array simultaneously, each through its own address, data, and control buses. Typical applications include shared memory in multiprocessor systems, FIFO buffers in telecom line cards, and data exchange buffers in industrial controllers where one port connects to a DSP and the other to a host CPU. The 9-bit width accommodates an eighth data bit plus a parity bit, common in 8-bit-plus-parity bus architectures.
No official successor order code is listed in the available records. For BOM lines that require this exact dual-port SRAM, the only sourcing channel is the independent surplus and broker market. No production-status claim is made beyond the obsolete designation.