Cleverly hidden under "infrared"

http://www.avagotech.com/products/parametric-search.jsp?navId=H0,C1,C5231,C4948,C4966,C5070

All barcode chips flagged as "obsolete"  40 pin DIP or QFP, or 44 pin PLCC
A minimum implementation here:
http://www.avagotech.com/pc/downloadDocument.do?id=4648


An AVR mega-8 would be a very nice platform.
See data sheet for package detail
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