This part is a kind of semiconductor called 74184.

Function of this product has BCD-to-Binary and Binary-to-BCD Converters.

Manufacturers : National Semiconductor

Image and pinout :

Some of the text within the PDF file :

DM74184 DM74185A BCD-to-Binary and Binary-to-BCD Converters June 1989 DM74184 DM74185A BCD-to-Binary and Binary-to-BCD Converters General Description These monolithic converters are derived from the 256-bit read only memories DM5488 and DM7488 Emitter connections are made to provide direct read-out of converted codes at outputs Y8 through Y1 as shown in the function tables These converters demonstrate the versatility of a read only memory in that an unlimited number of reference tables or conversion tables may be built into a system Both of these converters comprehend that the least significant bits (LSB) of the binary and BCD codes are logically equal and in each case the LSB bypasses the converter as illustrated in the typical applications This means that a 6-bit converter is produced [ ... ]

74184 PDF Datasheet Download