IS61C256AH-20N CMOS static RAM (SRAM) by ISSI Package: 28-pin narrow (300 mil) DIP Organisation: 32K-word x 8-Bit Access time: 20 nS Download IS61C256AH-20N .pdf datasheet: Status: NOS (New Old Stock) Individually tested: YES ( thorough 7-pass test routine used) RoHS compliant: no