15 ns async SRAM for 5 V legacy buses
The Infineon CY7C199CNL-15VXIT is a 256Kbit asynchronous SRAM organized as 32K x 8 bits, with a 15 ns access time.
Industrial temperature and SOJ footprint
The 28-SOJ package uses J-bend leads on 0.300-inch body width.
Infineon lists the CY7C199CNL-15VXIT as Obsolete. No last-time-buy window remains open from the factory. No official replacement part number has been published by Infineon for this specific variant.
At 15 ns address-access time, the part can keep up with a 33 MHz bus with zero wait states if the address setup and hold margins are within a few nanoseconds. For a 40 MHz or faster bus, you will likely need one wait state or a faster SRAM. This speed grade is the -15 variant; slower -20 or -25 parts exist in the same family but would stretch the bus cycle and may fail timing on a design originally laid out for 15 ns.
Tape & Reel delivery for automated assembly
No tube or tray variants for this suffix — if your rework bench needs a single loose part, the reel must be cut or a tray-shipped sibling sourced separately.