Oops. Error! Correction:
The 2532 Vpp is always +5V when reading, and would keep 2732 outputs always
OFF. The 2532 has just one enable pin, while the 2732 has two. Better to
tie 2732-20 to ***2532-20*** (or to GND - outputs would be always enabled
when the chip is selected).
Sorry 'bout that.
Best of luck,
Bob