28 Aug
2023
28 Aug
'23
1:54 p.m.
If it is a 14 pin IC, my guess would be the National DM8220 Parity
Checker/Generator (seen in TTL cross reference 1971)
Am 28.08.2023 um 14:24 schrieb Holm Tiffe via cctalk:
Hi guys,
I have 8 "new" Chips from Signetics, they are labeled:
S7536
N8220B
and on the backside between the pins "8220".
Does anyone know what they do? My search with google and
in the 1976 Signetics Date Manual (from Bitsavers) wasn't helpful...
Thanx in advance,
Holm