Quote from: goodney on November 06, 2013, 07:14:45 PM

I have two level shifters so that I could support chaining with my board. One chip does 3.3->1.8 (inputs) and one does 1.8->3.3 (outputs). They are 74AVC4T245's

74AVC4T245 is what i am testing the chips with and the reason for adding ActiveLowOE, but you did it the wrong way with two chips i think, because you won't be able to control two banks separately that way ... except if you use the two groups of each chips for two separate banks, but then why not just make them as In/Out on the same chip and the other one for the next bank?

Quote from: cscape on November 06, 2013, 07:16:24 PM

For chaining you just connect 2nd chip to 1st chip without level shifters. The whole chain runs at 1.8V, and you only need to convert to 3.3V between first chip and host.

As cscape said - chaining the chips is by connecting the first chip outputs to the second chip inputs without any level shifters. You need different LS for the different banks only and then you enable each bank by it's own OE

With some crazy wiring (board design) you may even go for 3 banks with only 2 LS if you want to be stingy