On Sunday, February 3, 2019 at 12:13:13 PM UTC-7, Louis Ohland wrote:

https://datasheet.datasheetarchive.com/originals/distributors/Datasheets-22/DSA-423854.pdf

Used on 16/4 adapters with the discrete pair of 53F2158 / A-B C30216

[64D7274] This chip contains the output drivers and some "corporate
logic", which was the 2 14-pin ICs on the elder version (ZM1 & ZM4).

Necrothread revivial - Part 1

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https://datasheet.datasheetarchive.com/originals/distributors/Datasheets-22/DSA-423854.pdf
Used on 16/4 adapters with the discrete pair of 53F2158 / A-B C30216

You can see the LM3045 chips in the schematics for the TROPIC design - which seems to be a straight copy (licensed from IBM by National Semiconductor) of the 'Pinegrove'-based adapters: https://www.ardent-tool.com/datasheets/NS_AN-816.pdf

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