Can anyone id these HP ICs? (Joe)

Hi Joe, Your board looks like one of the interpolator cards from an HP 5370A Universal Time Interval Counter. Do you see an "05370-6xxxx" part number on the board anywhere? Message: 14 Date: Mon, 14 Jul 2003 17:52:26 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: Re: Can anyone id these HP ICs? Reply-To: cctalk(a)classiccmp.org Hi Ed, I posted a picture at <http://home.cfl.rr.com/rigdon14/t-bird/hp-ic.jpg>. I unplugged the two ICs in the top RH corner and turned them over so that you can see the bottom and side of the ICs and the heat sink that the IC normally sits on. There is a depression in the bottom of the IC case and a rasied pad on the heatsink that fits into the depression. I've never seen anything like this before! Note the delay line (?) on the LH side of the card. Sorry I couldn't get a better picture. This is as close as I could get with my camera. Joe