16Mbit asynchronous SRAM, 10 ns access — BOM-fit note
The CY7C1061G-10ZSXI: This parallel-interface volatile memory operates from a single 4.5V to 5.5V supply rail, making it a direct fit for legacy 5V-tolerant bus designs or mixed-voltage systems where the SRAM sits on its own regulated 5V plane. The 10 ns access time means the memory can keep pace with a 50 MHz bus without wait states, provided the controller's output hold time and the board trace delay budget are within the SRAM's setup window.
Active lifecycle — no end-of-life watch needed
Infineon lists the CY7C1061G-10ZSXI as Active (current production). For a BOM line that depends on this exact Cypress-origin SRAM, the supply risk is low — the part is still a standard catalog item, not a phase-out candidate.
Supply rails and temperature grade — what they mean for the design
The 4.5V–5.5V supply range is a full 5V ±10% tolerance — the SRAM can run on a 5.0V rail without an external LDO, but it will not operate on a 3.3V-only bus. If the rest of the board is 3.3V, a level translator on the address/data bus is required, and the SRAM needs its own 5V supply or a boost converter. The 54-TSOP II package has an exposed paddle on the bottom — a thermal via array under the paddle to a ground plane improves heat spreading when the ambient cycles near the 85°C ceiling.