What this synchronous SRAM does in the system
167 MHz clock and 3.4 ns access — timing budget fit
At 167 MHz the clock period is about 6 ns; the 3.4 ns access time leaves roughly 2.6 ns of setup-and-hold margin for the controller. That margin shrinks with board trace delay and clock jitter, so keep the trace length under 2 inches and use a series termination resistor close to the SRAM pin. The synchronous SDR (single-data-rate) interface latches data on the rising edge only, which simplifies timing closure compared to a DDR part but halves the peak bandwidth per pin.
Not rated for industrial enclosures or outdoor deployment without active cooling.
Infineon lists the CY7C1387KV33-167AXC as Active. This part is still a standard production item, suitable for both new BOMs and sustaining production. The base product number CY7C1387 covers multiple speed and temperature variants, so if a future design needs the industrial-temperature sibling CY7C1387KV33-167AXI, the footprint and pinout match — only the temperature grade changes.