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BUY DS1643-100 https://www.utsource.net/itm/p/11655455.html
The DS1643-100 is a memory device manufactured by Dallas Semiconductor. It is a non-volatile, low-power SRAM that features 1KB of data accessible within a 28-pin DIP package. The device utilizes static RAM (SRAM) technology to store data in its memory. This allows the device to have a high write/read speed and low power consumption. Additionally, its nonvolatile nature ensures that stored data will not be lost during power loss events. The DS1643-100 is ideal for applications that require temporary data storage, such as medical and industrial instrumentation, automotive, and lighting. It is also widely used in consumer electronics and has been successfully implemented in security systems, automotive systems, and memory-recycling systems. (For reference only)
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