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New Logic Test - 74188 Vector Table

Enclosed is the new layout to be added to the logic tests.
The test was performed on the K155RE3 (256-bit, 32x8bit words PROM, open-collector outputs, analogue SN74188N) chip from IC/Microchip USSR (now Russia).


This IC is a PROM (Programmable Read Only Memory), so general testing only makes sense for a blank/clean, non-programmed chip. Because after programming, each chip can have different contents.


In the unprogrammed state, a low voltage is generated at all outputs of the 74188 microchip (74S188).
74188 (Blank) - Logic Vector.jpg
74188 (Blank) - Logic Test.jpg
K155RE3 (SN74188N).jpg

TI 54-54S-74-74S Programmable Read-Only Memories.pdf (366.25 KB)

DM74S188-NationalSemiconductor.pdf (119.89 KB)

74188 (Blank).lgc (2.83 KB)

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