MB81257-80
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262,144 x 1-Bit Dynamic Random Access Memory (DRAM), nibble mode layout variant architecture, legacy high-performance 80ns speed configuration. 100% Exact Replacements: Toshiba TC51257P-80, Hitachi HM50257P-80, NEC uPD41257D-80, Texas Instruments TMS4257-80NL.
I112