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MAX13487E isn't working

Category: Hardware
Product Number: MAX13487E

I'm trying to communicate between two MAX13487E. With a logic analyzer I see the data go into the first IC, comes out as A/B correctly, goes into the second IC, but it doesn't come out. I'm at a loss as to why.

I first tried RE tied to 5V, then tried to GND instead.

Here are the two sides, sender for this test:

Receiving side:

Any assistance would be appreciated!