Hi,
As a beginner, I'm trying to merge a few simple schematics, and have a couple of basic questions about the LM211 comparator.
For the Texas Instruments version of the LM211, there are two pins, "col out" and "emit out". See attached schematic and pin-out drawing. I picked "col out". Was that right? In either case, could someone please explain why the two options?
Also, in a previous discussion of LM211, a forum advisor suggested that you could drive a relay directly with LM211's 50 mA output. But I'm told the pull-up resistor is absolutely required. Could someone please resolve that conflict?
Thanks for your help.
As a beginner, I'm trying to merge a few simple schematics, and have a couple of basic questions about the LM211 comparator.
For the Texas Instruments version of the LM211, there are two pins, "col out" and "emit out". See attached schematic and pin-out drawing. I picked "col out". Was that right? In either case, could someone please explain why the two options?
Also, in a previous discussion of LM211, a forum advisor suggested that you could drive a relay directly with LM211's 50 mA output. But I'm told the pull-up resistor is absolutely required. Could someone please resolve that conflict?
Thanks for your help.