36 Mbit synchronous SRAM – 133 MHz, 1M x 36, 6.5 ns access
The CY7C1441KV33-133AXC: The 36-bit word width is the key differentiator here – most synchronous SRAMs in this density bin are 32-bit or 18-bit wide, so this part targets designs that need a full 36-bit datapath with parity or ECC without packing two narrower devices. Typical applications include network packet buffers, telecom line-card queues, and high-end FPGA external memory where the controller expects a 36-bit bus.
133 MHz clock + 6.5 ns access – where the timing closes
At 133 MHz the bus cycle is 7.5 ns, and the 6.5 ns access time leaves just 1 ns of margin for the memory controller to capture data. That is tight – the board-level trace delay, clock skew, and output hold time all eat into that window. For a new design, verify the controller's tSU and tH against the SRAM's tCO and tOH at the 3.135 V corner, not just the typical 3.3 V. The part is synchronous SDR (single data rate), so it latches addresses on each rising clock edge; no DDR-style double-pumping, which keeps the controller interface simpler but halves the peak bandwidth versus a DDR SRAM at the same clock.
Active lifecycle – no redesign pressure
The base product number is CY7C1441; the KV33 suffix indicates the 3.3 V supply variant, and the -133AXC suffix encodes the 133 MHz speed grade and the 100-TQFP (14x20) package.
100-pin LQFP – footprint and environment
If your system runs in an industrial cabinet, outdoor enclosure, or under-hood automotive application, the 0–70°C rating will not hold – you would need the industrial-temperature variant of this family (typically -40 to 85°C). The mounting is surface mount, and the package ships in a tray.