TI (Texas Instrument) part number TMS 9914 AFNL GPIB Bus Controller integrated circuit, used for IEEE-488 Instrument Interface and Control. These are new old stock from Watkins Johnson. Quite pricey new!  Download the data sheet from the TI site. You are buying one piece, it will be shipped in an anti-stat bag. Contact me for larger quantity, can set up sale if asked, I have several hundred of these.  Thanks and have fun!

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