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TMS570LS1114: Production life of this part

Part Number: TMS570LS1114


We have selected this part for a railway on board application. The product will have a service life of at least 20 years.

We understand end of life products and are planning for it with last buys and storage etc.

What is the current availability of this part? Will we get 5 years before last buy. More or less.

If this is all too hot to detail what is TI recommendations for the better device to choose to assure longest production life?