133 MHz synchronous SRAM — what the 6.5 ns access buys you
The CY7C1363C-133AXC is a 9 Mbit synchronous SDR SRAM from Infineon (formerly Cypress), organized 512K x 18 and clocked at 133 MHz. The 6.5 ns access time means the output data is valid one clock cycle after the address is latched — no wait states needed when the bus controller runs at 133 MHz. The x18 data width naturally pairs with a parity or ECC nibble on a 16-bit data bus, or serves as a standalone 18-bit wide memory for packet buffers and FIFO emulation.
Last Buy — LTB window is open, plan your final orders
Infineon has marked the CY7C1363C-133AXC as Last Buy. That means the manufacturer is taking final purchase orders for a limited window; once that window closes, the part enters end-of-life and only surplus/broker inventory remains. If your BOM still calls out this exact order code, now is the time to commit the lifetime buy quantity or qualify a replacement.
Pin-compatible density step — CY7C1325G-133AXC at 4.5 Mbit
If the 9 Mbit density is more than your application needs, the CY7C1325G-133AXC halves the memory to 4.5 Mbit (256K x 18) while keeping the same 133 MHz clock, 6.5 ns access, 3.3 V supply, and 100-TQFP footprint. The pinout matches across the x18 density family, so a board layout designed for the CY7C1363C can fit the CY7C1325G without a respin — useful for cost-down or allocation workarounds.
Commercial temp only — keep it indoors
No industrial or automotive qualification. If your system sees -40°C or +85°C ambient, this SRAM is not the right fit — look at the industrial-temperature variants in the same family (e.g., CY7C1363C-133AXI).