CY7C199-45DMB FIFO 256K SRAM by Cypress Semiconductor. Organisation: 32K x 8 (32,768 words by 8 bits) Access time: 45nS (Max) Package: 28-pin (narrow) CERDIP With an extended heat range of -55 to +125ºC Download Cypress CY7C199-45DMB .pdf datasheet: Status: NOS (New Old Stock) Stupidly priced Military item not for export. RoHS compliant: na