OOPS! I misread the previous post . . . it does say
1k x 4 bits.
The only 22-pin 4K-bit sram I remember from those days is one from EMM-SEMI,
but the number escapes me. Nevertheless, the only SRAM I remember in a
22-pin package other than the EMM-SEMI parts, was the 256x4 2101. There
were plenty of non-multiplexed DRAMs in that package, but few SRAMs.
semi-4600 Nec did one both dynamic (upd411, ti4060, intel 2107) and the
NEC pseudostaic (cell is static logic is dynamic on CS/) called the 410
and that is like the semi part. There were other oddballs.
Allison