Hi Rajan,
I’m afraid that there are no pin-to-pin replacements for LPC2214FBD144.
However, if you refer to the Product Longevity webpage at the link below, you could check that LPC2214FBD144 part was released on August 2007 and it is a 15-yar longevity device, so, it should be available until 2022:
https://www.nxp.com/products/product-information/product-longevity:PRDCT_LONGEVITY_HM
As other option you could consider reviewing application notes AN10576 “Migrating to the LPC2300/2400 family” and AN10878 “Migrating to the LPC1700 series”.
Hope this will be useful for you.
Best regards!
/Carlos
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