That margin matters when the memory is on a shared parallel bus with other peripherals — the 10 ns rating keeps the timing closure straightforward without needing a faster (and pricier) synchronous part.
The wide supply range answers the common question: this part operates at 3.3 V and also down to 2.2 V, so it fits designs that run a 2.5 V core memory bus or a legacy 3.3 V I/O bank without a level shifter.
The 54-TSOP II package with surface-mount footprint keeps the board assembly compatible with standard reflow profiles.
Procurement can qualify it for new designs without an obsolescence risk flag.