MM2111-2 Datasheet
1024-bit (256 x 4) static MOS RAM with common I/O and output disable
Manufacturer: National Semiconductor (now Texas Instruments)
Download the MM2111-2 datasheet PDF.
This datasheet also includes the MM2111 variant, as both parts are published together in a single manufacturer document.
Note: The manufacturer provides a single datasheet file (MM2111_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.