16 Kbit asynchronous SRAM — what the 35 ns access time buys the bus
The CY7C128A-35PC is a 16 Kbit asynchronous SRAM organized as 2K x 8, with a 35 ns access time.
Commercial temperature range — indoor and office equipment only
It is not qualified for automotive under-hood, outdoor telecom cabinets, or factory-floor environments where the ambient regularly exceeds 70°C. If your BOM calls for extended temperature, an industrial-grade SRAM in the same density and package family would be the correct cross-shop.
Through-hole PDIP — board-level fit and handling
The 24-pin PDIP (0.300 inch body width, 7.62 mm row spacing) is a through-hole package intended for socketed or wave-soldered boards. The tube shipping medium is standard for DIP devices.
Obsolete — sourcing reality and what to expect
No last-time-buy window remains open through the original manufacturer. If the BOM can tolerate a footprint change, a current-production 16 Kbit asynchronous SRAM in a 28-pin SOIC or TSOP may offer a lower total cost of ownership, but the PDIP-24 form factor limits drop-in alternatives.