Great for a restoration project or maintenance spare parts
This is a vintage chip (mid 1980's) and was designed to provide a 'blistering' 1200 baud bidirectional data communications!
Of no practical use these days other than for equipment restoration or servicing
CML
FX409J
CMOS LSI - always handle with ESD precautions in place
12 Baud FFSK Modem
22 pin DIL Cerdip package
I do have the full datasheets available
New Old Stock
Stored and supplied on ESD foam (my tube supplies had run out)
