42-Pin Commercial Temperature Fast Page DRAM IC, 5V, 1048576 Words
4MX4 FAST PAGE DRAM, 60ns, PDSO24, 0.300 INCH, PLASTIC, SOJ-26/24
4MX1 FAST PAGE DRAM, 60ns, PDSO20, 0.300 INCH, PLASTIC, SOJ-26/20