CD40174B: Latch Up

As long as you stay inside the recommended operating conditions, the device will work correctly.
As long as you stay inside the absolute maximum ratings, the device will not be damaged.

What are the characteristics of the input signal that you suspect will cause latch up?

Good afternoon Clemens

Thanks for responding, very impressed with TI's e2e Ap I guess you would call it

So there's nothing special regarding the input signals to the latch, they are LVTTL coming from an FPGA. The output signals will be 15v. 

I thought older CD4000 series devices had "latchup" issues, I may have been mistaken. Just want to assure myself this is not going to be an issue

I will certainly be staying inside the operating parameters of the part

So its looks like case closed

Thanks again - this is why I design with TI, they know there products

Jim

Good Catch Clemens, I missed that

So open drain could work, I was just trying to avoid the inversion, but that's not a big deal - I like your suggested part!

little more info on my application, TPIC6B273 will drive your TI lmh6321 unity line driver buffer. I'm driving Lamps (15v at 40ma) and Im required to current limit the 40ma to around around 45 to 50mA. The input of the lmh6321driver requires no current, so I don't need the current capability of the TPIC6B273, just a FYI, but need it to output 15V

If there's a better solution with fewer parts Id be interested.,trying to stay away from discreet parts

Thanks Clemens

Jim

Using the LMH6321 just for its current limit sounds like overkill.

If you can drive the lamps with a constant current, you can use the TLC5916.