Active DDR SDRAM for industrial memory bus designs
The MT46V16M16CY-5B IT:M: The parallel memory interface and 2.5V to 2.7V supply range place this squarely in the original DDR voltage domain — not DDR2 or later generations. At 200 MHz the data rate is 400 MT/s per pin, and the 15 ns write cycle time per word or page sets the minimum interval for back-to-back write commands.
Industrial temperature grade and what it buys you
That means the DRAM core and I/O buffers are characterized for cold-start at -40°C and for the self-heating plus ambient ceiling at 85°C — the refresh rate and timing margins hold across that span without derating. For a system that lives in an outdoor cabinet or an unheated factory bay, the industrial grade eliminates the need for supplemental heating or aggressive forced-air cooling that a commercial 0-70°C part would require.
Package footprint and board-fit note
Surface-mount reflow requires a stencil aperture matched to the ball diameter and a profile that keeps the peak below 260°C for lead-free solder. The tray packaging is standard for BGA devices in production volumes; the parts ship in JEDEC trays compatible with pick-and-place machines.
Sourcing posture and BOM fit
The 16M x 16 organization makes this a direct fit for 16-bit wide memory buses. For a 32-bit bus, two of these in parallel match the 32-bit interface width; the 256 Mbit density serves applications needing 32 MB of DDR SDRAM.