16 Mbit asynchronous SRAM in a 48-TSOP I footprint
Its 10 ns access time sets the bus timing budget for the memory controller — at 10 ns you have roughly 100 MHz equivalent random-access throughput, but the real constraint is the address-to-data valid window for the read cycle.
Package and mounting — TSOP I format
The part comes in a 48-TFSOP (0.724", 18.40 mm width) body, supplier device package 48-TSOP I. That is a standard thin small-outline package with 0.5 mm pin pitch, surface-mount only. The tray shipping medium means the parts are not taped; for automated pick-and-place you will need to transfer to tape or hand-place for prototype runs.
That means no last-time-buy notice is in effect, and the part is still in normal production.
Sourcing posture
Because the part is active and widely used, the supply channel is stable, but as with any asynchronous SRAM, date-code consistency and traceability back to Infineon's factory are worth verifying on receipt — a quick visual check of the laser-etched marking font and a cross-check against the manufacturer's plant code for that week can flag a suspect lot before it hits the line.