What this 36Mbit synchronous SRAM does
The Cypress CY7C1440AV33-167AXC is a 36Mbit synchronous SRAM organized as 1M x 36 bits, clocked at 167 MHz with a 3.4 ns access time. It uses a parallel memory interface and operates from a 3.135V to 3.6V supply. The 36-bit wide word matches common bus widths for cache tags, FIFO implementations, and packet buffers without needing to gang multiple narrower parts.
At 167 MHz the cycle time is 6 ns. With a 3.4 ns access time measured from the clock edge, the data appears on the outputs with about 2.6 ns of setup margin before the next clock edge — enough for most 100-pin TQFP layouts if the trace lengths are matched. The 1M x 36 organization means a single chip delivers 36 bits per cycle, so a 64-bit memory word takes two chips plus a 32-bit chip, or four chips for a 144-bit wide datapath. The 3.135V to 3.6V supply range covers both 3.3V nominal rails and the lower end of a 3.5V supply with margin.
The CY7C1440AV33-167AXC is marked obsolete by Cypress. If you need a pin-compatible drop-in for a production run, check the broader CY7C1440A family for density or speed variants that share the 100-LQFP footprint; verify the exact timing and supply compatibility against your timing budget.
Housed in a 100-lead LQFP (14x20 mm body), surface-mount only. The tray shipping medium means the parts arrive in antistatic trays, not tape-and-reel; plan for pick-and-place if your line expects reeled parts.