15 ns asynchronous SRAM in a 5 V system
Packaged in a 44-SOJ (BSOJ) surface-mount body, this part was designed for high-speed cache, buffer, and scratchpad memory in industrial and telecom equipment where 5 V logic remains the standard.
In a 5 V system with a 33 MHz or slower bus, this gives enough margin for address decoding, buffer delays, and PCB trace propagation without adding wait states. If your controller runs faster than 33 MHz or you need zero-wait-state operation at higher clock rates, you would step to a 10 ns or 8 ns part — but for the majority of 5 V industrial designs this is the sweet spot.
44-SOJ footprint and rework considerations
The 44-SOJ (Small Outline J-lead) package has a 10.16 mm body width and a 0.400 inch pitch. For rework, the J-lead profile needs a hot-air nozzle that heats the body evenly; a standard SOIC nozzle leaves cold joints on the inner rows.