Intel 8089A, 8089A-3, 8089-3 datasheet

[Eric Smith]

Does anyone have a datasheet for an Intel 8089A, 8089A-3, or 8089-3?

The only datasheets I've found are for the "plain" 8089 with no "A" or
numeric suffix. The component resellers show better availabiliity for with
the "A" and/or "-3" suffix, though it's possible that those are in error.

The 8089 is an I/O processor. The "-3" suffix is most likely a speed grade.
The standard part without the "-3" is 5 MHz.