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My 2nd try at posting this... No connection to, or experience w/ them, but Unicorn Electronics has the 74S387 listed for $4.99.

Is this to repair a specific board in your collection? If so what board/device?

Ok I normally see the fella at the Saturday morning flea market, but I'll send him a message now asking for clearer pictures. James

I think that the 74LS387was used to store phone numbers in some mid '70s phone dialers for security systems. I'm not sure, because I haven't seen one in 45 years.

I am certainly interested. That is cool. See what the particulars are. Thanks.

Hi all. Not sure if anyone is interested in this at all, however I was just came across someone here in Rio, selling this rather rare module for a 1960's 500 Series scope. I actually know the

Hi all, I just got my AWG510 Arbitrary Function Generator upgraded to Compact Fladh cards in place of the old hard disks. I also upgraded the OS from v1.x to v4, something that usually requires

David, What you are reading is a type of floating voltage. There is no ground reference on the signal generator. No need ground the signal generator. The voltage you read is through low values of

The barrels of the BNC connectors on my TDS744A 'scope are connected to the earth pin on the 3 pin mains plug (it's actually about 2 Ohm). I have a signal generator that only has a 2 pin mains

This is VERY basic, but I did get a scope one time that the delay did not work. There is a jumper plug and wire on the A7 board (P1120) that takes the signal from the Delay Pot (R1110) to the A8

The 74S387 is already obsolete in 1984 TI TTL Data Book: "contact the factory for abaility " and "has been superceded by the TBP 24S10". Albert

Sorry, that'd be MMI's 6330/31 256 x 4 bit fusible link PROM (8 address bits, 4 data bits). Raymond

The device ID in DEC's handbook is a 74LS367, not '387. Difficult to read in the scan though. It matches the '367's function and pinout. The '387 could be something like MMI's 6300/01 1K x 1 bit

https://www.datasheetarchive.com/pdf/download.php?id=c244bf850395e43e980328cebd83851e72aea8&type=M&term=74387 Dario

74[L]S387 did ring an ancient bell. I could find a reference here on page 5-13: http://www.s100computers.com/Hardware%20Manuals/Processor%20Technology/Processor%20Tech%2048K%20RAM.pdf "U65 will

Used MC10102Ps are available from utsource.?? I have no connection to this supplier, but have purchased parts from them previously without any problems. Regards Kerry From:

Are you certain about the 74LS387 part number? I can't even find a data sheet for that. the MC10231 and MC10102 are both ECL parts and seem to be available (-ish) on the auction site. I can easily

I am looking for 74ls387n, mc10231a, and MC10102P chips does anyone have source? I have done a lot of searching

Firstly, I appreciate the comments immensely. I had been using the rear BNC A-Gate signal as sync for my bench rig while observing other waveforms earlier in the repair so I am familiar with those.

According to the Common Design Parts Catalog Tek part# 151-0830-00 is an MPS918 — Jeff Dutky