[Techtoolslist] 1Kx4 PROM's anyone...

Jess Askey jess at askey.org
Sat Mar 17 23:57:10 EDT 2018


Hiya folks...

I realized that Im suddenly extremely low on 1Kx4 Bipolar PROM's... the 45ns or 35ns versions which are faster for the Mathbox etc... anyone have a large stash of these and willing to sell 50-100 of them at a fair price?

Here are all the manufacturers and various part numbers for reference..

45ns - Tri State
-------------------------------------------------------------
NEC                                        uPB426-1
Fujitsu                                  MB7134
Intersil                                  LH5626
Signetics                              82S137A
Motorola/Harris               HM7643A
MMI                                      63S441
National                               74S573A

35ns - Tri State
-------------------------------------------------------------
NEC                                        uPB426-2
Fujitsu                                  MB7054
Signetics                              82S137B
Motorola/Harris               HM7643B
MMI                                      63S441A
National                               74S573B
AMD                                      27S33A




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