5 PCS DS1644-120 DIP-28 Nonvolatile Timekeeping RAM Chips - Brand New

Need some specific memory chips for an older electronics project or repair? Here are 5 brand-new DS1644-120 integrated circuits. These are Nonvolatile Timekeeping RAM chips in a DIP-28 package – that's the classic dual-in-line package with 28 pins. They're from Q-BAIHE brand, come in their original packaging, and have both EAN and UPC codes listed (6240379148789). 'Nonvolatile Timekeeping' means they combine static RAM with a real-time clock and a built-in battery to keep data and time running even when main power is off. Used in various older computer systems, industrial controllers, or point-of-sale equipment. If your schematic calls for a DS1644-120, this 5-pack gives you spares.