15 ns asynchronous SRAM — what the access time means for your bus
That 15 ns figure is the ceiling for the memory controller's timing budget — if your bus runs faster than about 66 MHz without wait states, you'll need to insert a wait cycle or step to a faster SRAM.
Obsolete — the sourcing reality for this part
This part is officially obsolete per the manufacturer. That means no further production runs and no last-time-buy window still open.
Package and footprint — 32-TSOP II
The device comes in a 32-TSOP II (thin small-outline package) with a 0.400-inch body width and 10.16 mm width, surface-mount. The 32-TSOP II footprint is common across many 1 Mbit asynchronous SRAMs from Cypress (now Infineon) and other vendors, which matters when you're looking for a pin-compatible swap on an existing board layout.
