At 10 ns, this part keeps up with fast 3.3 V controllers without inserting wait states — the system architect budgets that 10 ns into the address-to-data valid path, not the other way around. The parallel interface is straightforward: no clock, no burst logic, just chip-enable and output-enable gating the data bus.
That means it holds timing and data retention across the thermal swings of outdoor telecom cabinets, factory-floor motor drives, and engine-bay-adjacent electronics. The 3.3 V supply is the standard for modern 3.3 V logic families — no 5 V tolerance here, so check the I/O voltage of the host controller before assigning this to the BOM.
Infineon (formerly Cypress) has ended production — no last-time-buy window remains open through the factory. The BOM line that calls out CY7C1059DV33-10ZSXIT now depends on the independent distribution channel for new-old-stock or surplus inventory. For a production run, the procurement team needs to qualify a replacement or secure the remaining available units before the channel dries up.
44-TSOP II — the footprint that governs the drop-in search
The package is a 44-TSOP II (0.400-inch body width, 10.16 mm wide), surface-mount. This is the standard 44-pin TSOP II footprint used across the Cypress 8 Mbit asynchronous SRAM family. A rework tech or layout engineer looking for a pin-compatible replacement must match this exact footprint — the 44-TSOP II is not the same as the narrower 44-TSOP I. The Tape & Reel suffix (XIT) means it ships on 13-inch reels, typical for automated pick-and-place assembly.