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12bit multiplexer from IDT geared for DDR4 NVDIMMs

Posted: 26 Feb 2015 ?? ?Print Version ?Bookmark and Share

Keywords:IDT? multiplexer? DDR4? NVDIMM? DRAM?

Integrated Device Technology Inc. (IDT) has rolled out a high-speed multiplexer that expands the company's portfolio of DDR4 products targeting the nascent non-volatile dual in-line memory module (NVDIMM) ecosystem. Also, Micron Technology has picked IDT as its supplier of choice for NVDIMM multiplexers serving the enterprise and cloud server markets.

NVDIMM is a novel architecture that provides data persistence to dynamic random-access memory (DRAM) by allowing data to be backed up to non-volatile memory, such as flash memory, during special events including catastrophic power failure. Multiplexers are key components of NVDIMM architecture, isolating the host controller from the DRAM memory during 'save' and 'restore' operations between DRAM and non-volatile memory.

DDR4 multiplexer

Multiplexers have traditionally placed a burden on the signal integrity of the memory channel, which can compromise the speed of the operation. IDT's high-speed multiplexer is geared to mitigate the signal integrity impact to the memory channel while enabling DDR4 NVDIMM applications to run at bus rates of up to 2133MT/s (megatransfers per second) and beyond, stated the company.

The 12bit bus switch/multiplexer comes in a VFBGA 48-pin package, for a compact footprint that can replace data buffers on the DIMM for NVDIMM applications. It features a make-before-break circuit that prevents glitches when switching, and AC and DC parameters optimised for DDR4, enabling the highest possible memory channel performance for NVDIMMs even when intermixed with other DIMM types.

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