datasheet 82C250:
https://www.nxp.com/docs/en/data-sheet/PCA82C250.pdf

datasheet 82C251:
https://static.chipdip.ru/lib/204/DOC000204722.pdf

datasheet TJA1040:
https://www.nxp.com/docs/en/data-sheet/TJA1040.pdf

datasheet MCP2551:
https://static.chipdip.ru/lib/310/DOC000310107.pdf

datasheet 74HC125/74HCT125:
https://static.chipdip.ru/lib/046/DOC003046894.pdf