Burroughs parts? (was Re: PROMS but from what ?)

---------------------Original Message: Date: Thu, 26 Aug 2010 01:09:00 -0400 From: Ethan Dicks <ethan.dicks at gmail.com> Subject: Burroughs parts? (was Re: PROMS but from what ?) On 8/25/10, MikeS <dm561 at torfree.net> wrote: Hey! I think I've got a tackle box full of stuff like this. One drawer is marked "3581 '38" for example. I picked up the tacklebox and the chips from a vendor at Dayton some years ago. It's loaded with the following part numbers (dates listed are representative): 1447-3532 SN7404N 7909 (Nat'l Semi/Signetics/TI) 1447-3524 SN7408N 7650 (Nat'l Semi/Signetics/ITT/TI) 1447-3540 7410F 7915 (Nat'l Semi/Signetics/ITT) 1447-3565 7420 7907 (Signetics/ITT/TI) 1447-3607 SN7474N 7836 (TI/Fairchild/Signetics) 1447-3615 74107N 7912 (Nat'l Semi/Fairchild/Signetics) 1447-3557 74H11N 7738 (Nat'l Semi/ITT/Signetics) 1447-3581 7438N 7838 (Nat'l Semi/ITT/Signetics) 1447-3797 SN74157 7827 (Nat'l Semi/ITT/TI) 1447-3771 SN74161N 7701 (Nat'l Semi/TI/AMD) 1447-3755 74195 7644 (Signetics/TI/AMD) 1447-3722 74155 7709 (Signetics/TI) 1447-3714 SN74153 7832 (Nat'l Semi/Signetics/TI) ... plus a mish-mash in a bin marked "misc"... part numbers include 1447-* * == 3599, 3706, 3623, 3698, 3789, 3649 and several more Until this thread, I had no idea the 1447-* numbers were Burroughs. Is anyone restoring such equipment and looking for spares? My own interest are such that if I used these anywhere, it'd be to replace parts gone bad in DEC M-series modules for my PDP-8/i and PDP-8/Ls. In particular, I'm always hunting for 7474s since those seem to be favored to fail in the gear I have (along with 7440s, statistically). Is there a list of these part numbers? The ones I gave happen to be listed with both the 1447-* numbers _and_ 74-series TTL numbers. The misc drawer has numerous ones with only 1447-* numbers, and I'd like to know what's what. Cheers, -ethan ---------------------------Reply: Have a look at the cross-reference on Bitsavers: http://www.bitsavers.org/pdf/burroughs/icData/ and if there are any that you can't find, send me a PM and I'll see what I can find; I have another list or two but no idea where they came from, as well as some dead-tree stuff from my days at BBM. mike