What is an HP1858-0054 transistor array?

Thanks to all who replied.. I got a private e-mail pointing me to an Agilent schematic that used that device. Said scehamtic gave me the pinout and the functionality -- it's 5 independant transistors, 3 NPN and 2 PNP. The remaining connection (16 pin DIL package, 5*3 connections to the tranistors) is the substrate. Most of my guesses had been correct. I'd identified emitters and collectors of the 2 NPN transistors that were used, and, actually, I'd found the bases too. The 3 unusued-in-the-9816 connections were the 3rd NPN transsitor. But I'd not worked out the PNP transistors. Partly because I'd made the stupid assumption that they'd all be NPN and secondly because the parasitic diodes were confusing my measurements. Anyway, having got a pinout, I looked at Digchip and did a search for transistor arrays. There was one RCA number that was described as a mixed NPN/PNP transistor array, so I looked at the datasheet. The pinout matches. So, the answer to my original question is CA3096. It may be a selected one (although I doubt it, at least ont in the 9816, the reset circuit doesn't look that critical). But it's the same pinout, etc. Thanks again to all who helped -tony