I can't find information for the IC in the picture. It's a socketed 8 pin DIP that is part of the controller of a CNC machine. As far as I can see it receives signals from a microcontroller and then connects to a pair of 75176B which in turn connect to a Delta ASDA B2 servocontroller.
Thanks in advance.
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The UR mark suggests a safety-related part, such as an optocoupler.
And in fact, the Broadcom (formerly Avago, Agilent, or HP) HCPL-2630 has this marking:
It is a dual optocoupler. Full details here.
answered Mar 8, 2020 at 5:52
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\$\begingroup\$ Proven correct, I don't know why it escaped my too many searches. \$\endgroup\$– r_czCommented Mar 9, 2020 at 3:49