The Motorola SC prefix means a custom or semicustom part. Good luck! -- Will
On Wed, Sep 30, 2020 at 4:05 PM Josh Dersch via cctalk <cctalk@classiccmp.org> wrote: > > I'm in the middle of working out the pinout for the power supply connector > on the MDP-1000. I'm aided somewhat by a set of test points on the > backplane, unfortunately the "+" and "-" symbols (in the solder mask labels > next to the test points) are nearly indiscernible, so I'm trying to verify > that I'm not mixing up + and - 15V. > > On the core memory boards are eight Motorola SC5330 IC's (datecodes from > early 1969), which have pins connected to both the + and - 15V lines -- if > I can find a datasheet I could pretty easily confirm which is which. > Trouble is I can't find anything on this chip. I've scanned through the > databooks on Bitsavers, no luck. Anyone have any ideas? > > Here's a picture in case that helps at all: > https://1drv.ms/u/s!Aqb36sqnCIfMpIVXm5draSrWHGMzJg > > - Josh
