The Cypress CY7C144E-15JXI is a 64Kbit dual-port asynchronous SRAM organized as 8K x 8. Its 15 ns access time means the part can deliver data within 15 ns of asserting the address, which is fast enough to interface with many 16- and 32-bit processors without wait states at clock speeds up to about 33 MHz.
Industrial temperature range and 5V supply
If your system has already migrated to a 3.3V or lower core, this part will need a separate 5V rail and level translation on the address/data bus.
68-PLCC package — legacy footprint, rework-friendly
Housed in a 68-lead PLCC with J-leads (24.23 x 24.23 mm body), this package is through-hole-solderable with a standard PLCC socket or can be reflow-soldered. The J-lead form factor is less prone to solder-joint cracking under vibration than gull-wing leads, and the large body makes hand-solder rework straightforward — a practical advantage when repairing legacy boards or running low-volume production runs where a BGA would be impractical.
Cypress lists the CY7C144E-15JXI as obsolete. No official successor part is recorded; the dual-port SRAM market has largely shifted to synchronous parts or embedded SRAM in FPGAs and SoCs.