18 Mbit synchronous SRAM for high-bandwidth buffer applications
This part is designed for high-speed cache, FIFO, and packet-buffer roles in networking, telecom, and test equipment where deterministic read/write latency matters.
167 MHz clock and 3.4 ns access — what they mean for bus timing
The 167 MHz clock rate supports back-to-back read/write cycles without dead cycles in synchronous mode. The 3.4 ns access time from clock edge to data valid gives the controller a tight but manageable setup/hold window — budget for PCB trace delay and clock skew when routing the data bus. At this speed, signal integrity on the parallel bus matters; keep trace lengths matched and use series termination near the SRAM pins.
100-TQFP package — footprint and rework notes
It is a surface-mount package suited for standard reflow soldering. For rework, use a hot-air nozzle sized to the body; preheat the board to 100–120°C to avoid thermal shock.
Commercial temperature range — deployment boundary
Not qualified for industrial enclosures, outdoor cabinets, or under-hood automotive use. If your application sees extended temperature swings, look at industrial-temperature (-40°C to 85°C) synchronous SRAMs in the same Cypress family.
Cypress has discontinued this exact variant. For new designs, consider a current-production synchronous SRAM with similar speed and density from Cypress (now Infineon) or an alternate vendor.